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STATE OF FLORIDA


DEPARTMENT OF ENVIRONMENTAL PROTECTION
Michael W. Sole, Secretary


FLORIDA GEOLOGICAL SURVEY
Walter Schmidt, State Geologist and Director





FLORIDA
assesseasam44 04o!


OPEN-FILE REPORT 91

TEXT TO ACCOMPANY GEOLOGIC MAP OF THE EASTERN PORTION OF
THE U.S.G.S. PERRY 30 x 60 MINUTE QUADRANGLE, NORTHERN
FLORIDA
(OPEN-FILE MAP SERIES 98)

By

Richard C. Green, P.G. #1776, David T. Paul,
and Thomas M. Scott, P.G.

2007
ISSN (1058-1391)

This geologic map was funded in part by the USGS National Cooperative Geologic
Mapping Program







OPEN FILE REPORT NO. 91


Table of Contents

A b stract ....................................................................................... .................. ................. . .........1
Introduction....................................... ........ ............... 1
M eth o d s .................................................................. ................... .................. ................. .............. 3
P previous W ork ................................... ...................................................................................................... 3
Geologic Summary ........................................ 4
Structure .................. ............................ 4
G eo m o rp h o lo g y .................................................................................................................... .................. 7
Geomorphic Districts ................... ............ .................... ....... 7
O cala K arst D istrict............................................................................................ ...................... 7
A lach u a K arst H ills ............................................................. ......................... .................. 9
B ranford K arst Plain ................................................... ............... .................. ........ .................. 9
Perry K arst/San Pedro B ay ................................................................................................... 9
O kefenokee B asin D district ........................................................ ................................................ 10
N northern Okefenokee Basin.................................................................... ...................... ...... 10
T ifton U plan D istrict.............................................................................................. . ........ ........ 11
M adison H ills .................................................... ................................................................... 11
Lithostratigraphic Units ......................................... ..................... 11
Tertiary System .................................................................. ...................... ................. .... 1
E o cen e S erie s................ ........ .................................................................................. ......... ...... 1 1
M middle Eocene................................ .. ........ ................. 11
E o cen e S erie s................ ........ .................................................................................. ......... ...... 12
Upper Eocene ................................ ............. ............... 12
Oligocene Series ................................... ........................... 13
Lower Oligocene .......................................... 13
M iocene Series .. ................. ...................................................... ........................... ............. 13
L ow er M io cen e ................ .. ........ .. .............. .. ................. ................. ........... .. ................ 14
M middle M iocene........ ....................... .............. ........... .. 14
T ertiary-Q uater ary System s......................................................................................................... 14
P liocen e Series ................................................................................................................. .. 14
Pleistocene Series ..................................... ............ ............... 15
Hydrogeology .......... .. ........................................................... 15
D derivative P roducts............................................................................ ....................... ................... 15
Selected B bibliography ................................ ................ ......... ........................ ................. .... 16

List of Figures

Figure 1: Areas mapped under FGS STATEMAP Program................ ..................... ................2
Figure 2: Location of selected river basins, springs, swallets, and other water bodies ................................. 5
Figure 3: Principal subsurface structures of north Florida (modified from Puri and Vernon, 1964 and
S ch m idt, 19 84 )............................................................... ............................................ 6
Figure 4: Terraces in Florida. (after H early, 1975). ................................... ............................................... 8

List of Tables

T able 1: W ells utilized for study ........................................................................................... .................... 24






OPEN FILE REPORT NO. 91


Abstract


The accompanying 1:100,000 scale geologic map (Open-File Map Series 98) shows the
areal distribution of bedrock and surficial geologic units for the eastern half of the Perry, Florida
30 x 60 minute quadrangle. The map was constructed using a combination of field mapping at
1:24,000 scale, compilation of data from existing maps (various scales), core and cuttings
analyses and descriptions, and analyses of various Geographic Information System (GIS) data
sources. The resulting data was compiled in ESRI's ArcGIS ArcMap 9.1 for publication as part
of the Florida Geological Survey Open-File Map Series (O.F.M.S.). Map units in the area range
in age from the Eocene Ocala Limestone to undifferentiated Quaternary sediments. Important
resources in the area include groundwater, springs, sand, limestone, and dolostone. Numerous
springs, sinking streams (swallets), and other karst features are present in the study area.
Understanding of geologic units, karst, springs and their interactions within the map area aids
land planners, environmental professionals, and citizens in making land-use decisions such as
designing new construction projects, siting new water supply wells, locating sources of mineable
resources for aggregate supply, and protection of springs and water quality.

Keywords: Florida, geologic map, environmental geology, geomorphology, springs,
swallets, Floridan aquifer system.

Introduction

This report is designed to accompany Open-File Map Series (O.F.M.S.) 98. O.F.M.S. 98-
01 depicts the near-surface geology of the eastern half of the Perry 30 x 60 minute quadrangle.
O.F.M.S. 98-02 depicts six geologic cross sections, as well as a correlative stratigraphic chart for
the lithologic units for the study area. O.F.M.S. 98-03 shows a geomorphology map, a digital
elevation model (DEM), locations of known springs, sinkholes and swallets, and photographs of
selected outcrops within the study area.
The study area lies east of Perry and west of Live Oak, Florida and includes portions of
Hamilton, Lafayette, Madison, Suwannee, and Taylor Counties (Figure 1). It lies west of the
Lake City 30 x 60 minute quadrangle, part of which was mapped under a grant from the U.S.G.S.
STATEMAP program (Green et al. 2006). A regionally important river, the Suwannee River,
bisects the map area, and much of the area serves as recharge to the Floridan aquifer system, the
primary source of drinking water in the region.
An objective for this report is to provide basic geologic information for the
accompanying geologic map (O.F.M.S. 98-01), cross sections (O.F.M.S. 98-02) and
geomorphology (O.F.M.S. 98-03). Information provided by this report and these maps is
intended for a diverse audience comprising professionals in geology, hydrology, engineering,
environmental and urban planning, and laypersons, all of whom have varying levels of geologic
knowledge. The map can help users identify and interpret geologic features which impact
activities related to groundwater quality and quantity, location of mineral resources, land-use
planning, and designing construction projects. Applied uses of the map and data in this report
include: 1) identifying potential new mineral resources, 2) characterizing aquifer recharge
potential and confinement, 3) aiding in water-management decisions on groundwater flow and






FLORIDA GEOLOGICAL SURVEY


usage, 4) providing information on aquifer vulnerability to potential pollution, 5) ecosystem,
wetlands, and environmental characterization, and 6) recreational uses.


0 10 20 30 40 50 Miles

0 10 20 30 40 50 60 70 80 Kilometers


LEGEND


O.FM.S.83-01-07 1995
O.YM.S,83-08-12. 1996
O.FM.S.86. 1997
O.FM.S.87. 1998
O.FM.S. 88. 1999
O.F.M.S. 89. 2000
O.FM.S. 90. 2001


IZI
LII


I I
E~I


O.F.M.S. 91.2002
OF.M.S. 92. 2003
OF.M.S. 93. 2004
O.F.M.S. 94. 2',05
O.F NM S. 97. 21116
O.F.M.S. 98. 2007
(Current STATEMAP
Study Area)


.1 City

- - County Boundary


1:24.(H00 Quadrangle

1:100,00() Quadrangle


Figure 1: Areas mapped under FGS STATEMAP Program.


[_ J

[_ J






OPEN FILE REPORT NO. 91


Methods

The study consisted of 1) reviewing and compiling existing geologic literature and data,
2) mapping geologic units in the field at 1:24,000 scale using standard techniques, 3) core and
cuttings analyses of existing samples, 4) new core drilling, 5) collecting and describing of
outcrop samples, and 6) preparing a geologic map, geological cross-sections, and geomorphic
map of the area. Field work was performed during the spring and summer of 2007 and consisted
of sampling and describing numerous outcrops, river and pit exposures. Seventy-eight new
samples of geologic material were added to the FGS surface-sample archives (M-Series), four
new cores were drilled, and numerous additional outcrops were examined during this project. All
data, including data from over 400 wells, were compiled and analyzed by the authors and the
map and accompanying plates were developed in ESRI's ArcGIS ArcMap 9.1 for publication as
part of the Florida Geological Survey Open-File Map Series.
The study area is blanketed by a veneer of Quaternary sediments and soils. For this
reason, and in keeping with geologic mapping practices developed by Scott et al. (2001), the
authors have adopted the policy of mapping the first named geologic unit within 20 feet (6.1
meters) of the surface. If undifferentiated Quaternary (Qu) sediments attain a thickness greater
than 20 feet (6.1 meters), then they appear as the mapped unit. If these undifferentiated
sediments are less than 20 feet (6.1 meters) thick, then the underlying stratigraphic unit appears
on the map.
The region is generally vegetated and public access is hindered by the presence of
numerous farms and private land-owners. Fieldwork access was typically limited to public roads,
State-owned lands, and Suwannee River Water Management District-owned lands.

Previous Work

The current study builds on many previous geologic investigations in and around the
present map area. A statewide geologic map (Scott, et al., 2001) was published by the FGS in
digital format and provided much of the base-map material. Preliminary county geologic maps
have been published for Hamilton (Scott, 1993), Lafayette (Campbell, 1993c), Madison
(Campbell, 1993a), Suwannee (Rupert et al. 1993), and Taylor (Campbell, 1993b) Counties at
scales of 1:126,720. It is important to point out, however, that each of these Open-File Map
Series geologic maps were constructed in an average time-frame of two weeks utilizing selected
in-house geologic data with little to no extra field work. Although these maps provided an
excellent starting point for the detailed geologic mapping undertaken for this project, significant
refinement of the geologic maps was possible as a result of this project. This study also benefited
from the work performed for geologic mapping in the western portion of the Lake City 30 x 60
minute quadrangle (Green et al. 2006). Many of the field relationships and stratigraphic
problems were worked out during that project and data gathered during the project proved
invaluable in the completion of this endeavor.






FLORIDA GEOLOGICAL SURVEY


Geologic Summary

The near surface geology of the eastern portion of the U.S.G.S. 1:100,000 scale Perry
quadrangle is composed of a complex mixture of Eocene to Holocene carbonate and siliciclastic
sediments. A combination of factors, including fluvio-deltaic deposition, marine deposition,
dissolution of underlying carbonates, erosion of sediments as a result of eustatic changes in sea
level, and structural features, have influenced the geology of the study area.
Much of the eastern portion of the Perry quadrangle is located within the Suwannee,
Alapaha, Withlacoochee, and Econfina River basins (Figure 2). In this area, the Suwannee River
and its tributaries contain numerous documented springs, including six first magnitude springs
and 53 lesser magnitude springs. A first magnitude spring is defined as having a minimum
average flow of 100 cubic feet per second, or 64.6 million gallons per day. Many of these springs
have evidenced significant increases in pollutants in the last few decades, particularly nitrate
(Scott, et al. 2002). Detailed geologic mapping of lithostratigraphic units in this area provides
critical data needed to help in future assessments of the vulnerability of the aquifer systems and
these springs to contamination. The recharge areas for many of these springs are believed to be
located in and around the current study area. Understanding the surficial geology of the map
area is a key factor in developing management and protection plans, not only for the springs, but
for the unconfined portions of the Floridan aquifer system (FAS).

Structure

Several structural variables have affected the geology of the region. The Peninsular Arch,
(Figure 3) a structurally high area which affected deposition from the Cretaceous to the early
Cenozoic, is the dominant subsurface feature in the Florida peninsula (Applin, 1951; Puri and
Vernon, 1964; Williams et al. 1977; Schmidt, 1984; Miller, 1986; Scott, 1997).
The axis of the Peninsular Arch extends from southeastern Georgia to the vicinity of
Lake Okeechobee in southern Florida in a general northwest to southeast trend. The crest of the
arch passes beneath Alachua County south and east of the study area and is highest in Union and
Baker Counties east of the study area. The arch was a topographic high during most of the
Cretaceous Period and had Upper Cretaceous sediments deposited over it (Applin, 1951). It
formed a relatively stable base for Eocene carbonate deposition except during times of periodic
land emergence due to lowered sea levels (Williams et al. 1977). The arch did not affect
Neogene to Holocene sediment deposition (Williams et al. 1977; Scott, 1997).
The Ocala Platform is the most prominent structure affecting the near surface
depositional and post-depositional environments within the map area. Hopkins (1920) originally
named this feature the Ocala Uplift. Vernon (1951) described the Ocala Uplift as a gentle flexure
developed in Tertiary sediments with a northwest-southeast trending crest. Because there is
continuing uncertainty about the origin of this feature, Scott (1988) used the term Ocala
Platform, rather than Ocala Uplift or Ocala Arch, since it does not have a structural connotation.
The Ocala Platform exerted its influence on Neogene sediment deposition, and Miocene
sediments of the Hawthorn Group are thought to have been deposited across the platform (Scott,
1981a; Scott, 1988). Post-Miocene erosion, however, has removed sediments of the Hawthorn






OPEN FILE REPORT NO. 91


Group from much of the crest of the Ocala Platform, exposing Eocene carbonates (Cooke, 1945;
Espenshade and Spencer, 1963; Brooks, 1966; and Scott, 1981b).
1hqlapaha Rncr


-1 -uk LAKE CITY

-,PERRY 9, |" C. 1 c%








020
I












0, 1st Magnitude Springr Ii
G INESk'ILL~E. (,.unc \llc..;

LEG EN D *"'. 'o.}










0 10 20 30 40 50 Miles
A Sacll CEDRARer Basin
m,- Ist Magnitude Spring
vaUpper Suwane Rier Basin,


S Rit laver or Str ive r North Basin
Lake or Pond
0 10 20 30 40 50 Miles
I 1 1:100.000 Quadrangle
Alapaha River Basin 0 10 20 30 40 50 60 70 80 Kilometers





Current STATEMAP Stud Area

Figure 2: Location of selected river basins, springs, swallets, and other water bodies.
~ St. Marks River Basin
j~-' l Lower Survannee River Basin
SUpper Su\vannee River Basin E
l \\ bthlacoochdc River North Basin S
O O.F.M.S. 98 231 7
Current STATEMAP Study Area

Figure 2: Location of selected river basins, springs, swallets, and other water bodies.






FLORIDA GEOLOGICAL SURVEY


^- -


/ SOUTHEAST GEORGIA
i EMBAYMENT


_ q


KILOMETERS
0 20 40 60 80 100
I I II
0 30 80
MILES


O OFMS 98 Map Area Boundary


Figure 3: Principal subsurface structures of north Florida (modified from Puri and Vernon, 1964
and Schmidt, 1984).

This is evident in the southern portion of the map area. Undifferentiated sediments have
subsequently been deposited on the exposed Oligocene and Eocene carbonates. These consist of
residual clays, sands, and aeolian sands deposited during the Pliocene to Holocene (Scott, 1997).






OPEN FILE REPORT NO. 91


Vernon (1951), utilizing aerial photographs, first mapped fracture patterns throughout
northern peninsular Florida. Regionally, these fractures generally trend parallel to the axis of the
Ocala Platform in a northwest-southeast orientation. A secondary system of fractures intersects
these primary fractures at high angles in a northeast-southwest trend (Vernon, 1951). Orientation
of stream meanders along the Suwannee River suggests that these fracture patterns may be a
controlling factor in stream location (Colton, 1978).
Several relict Neogene coastal terraces, which developed as a result of fluctuating sea
levels, have been documented in the study area. Healy (1975) recognized three marine terraces
within the study area (Figure 4): the Wicomico terrace at elevations of 70 to 100 feet (21.3 to
30.5 meters) above mean sea level (MSL), the Sunderland/Okefenokee terrace at elevations
between 100 and 170 feet (30.5 and 51.8 meters) above MSL, and the Coharie terrace at
elevations between 170 and 215 feet (51.8 and 70.5 meters). The elevations between 150 and 170
feet (45.7 and 51.8 meters) above MSL were referred to as the Okefenokee Terrace by MacNeil
(1950) and Alt and Brooks (1965). Detailed discussions and correlations of these marine terraces
and relict shorelines have been attempted by many authors, including Matson and Sanford
(1913), Cooke (1931, 1939), Flint (1940, 1971), MacNeil (1950), Alt and Brooks (1965), Pirkle
et al. (1970), and Healy (1975).

Geomorphology
Geomorphic Districts

According to Scott (2005), the study area contains part of three geomorphic provinces -
the Ocala Karst District, the Okefenokee Basin District, and the Tifton Upland District (see
Figure 2, O.F.M.S. 98-03). Within the map area, these districts have been further subdivided
topographically into five regional physiographic units: the Alachua Karst Hills, the Perry
Karst/San Pedro Bay, and the Branford Karst Plain (Ocala Karst District), the Northern
Okefenokee Basin (Okefenokee Basin District), and the Madison Hills (Tifton Upland District)
(see Figure 3, O.F.M.S. 98-03).

Ocala Karst District

The majority of the current study area is located within White's (1970) Gulf Coastal
Lowlands. Scott (2005) refers to this area as the Ocala Karst District. Within Florida, the Ocala
Karst District encompasses a broad area from Wakulla County in the panhandle of Florida, south
to Hillsborough and Pinellas Counties in the west-central peninsula and inland to nearly the
center of the peninsula. Elevations within the district range from sea level along the coast to in
excess of 300 feet (91.4 meters) above MSL on the Brooksville Ridge (O.F.M.S. 98-03, Figure 3).
Within the study area, elevations range from 45 feet (13.7 meters) in the southwestern comer of the
study area to 170 feet (56.0 meters) along the eastern edge of the map area (O.F.M.S. 98-03, Figure
1).
Carbonate sediments, ranging from the Middle Eocene Avon Park Formation to the
Lower Oligocene Suwannee Limestone, lie at or near the land surface within this district. The
Ocala Karst District is dominated by dissolution sinkholes and shallow bowl-shaped depressions,
producing a rolling topography. Generally, a variably permeable siliciclastic cover allows
downward percolating groundwater to slowly dissolve the underlying limestone, leading to
cover-collapse sinkholes and cover-subsidence features. Cover-collapse sinkholes form rather







FLORIDA GEOLOGICAL SURVEY


abruptly from the structural failure of an underlying cavern roof An excellent example of this is
Devil's Mill Hopper, located in Alachua County southeast of the present study area (Evans, et al.
2004).
Cover subsidence features generally occur in areas where overlying siliciclastics are
thicker and sediments sag as carbonates dissolve underneath. Typically, areas such as these have
only a few shallow sinks formed by the downward movement of the siliciclastic overburden
filling voids created by slow dissolution of underlying carbonates. Springs, sinking and resurgent
streams, and caverns commonly occur within the Ocala Karst District.


,I~)


- 1


Legend

Co'unlt Boundar%
OFMS 98 Map Area Boundan

Relief of Terraces, in Feet
21 5 321 Hazlehurst terrace.
Coastt% ise delia plain
170 215 Cohare terrace


N



S4
S


Sunderland
(kefenukee terrace


70- 100 \% icoliiico terrace


S42 70


Penhlollowa\ terrace


2- -12 Talbot terrace


10 25 Panmlico terrace
* I 10 Siker Bluffterrace


Figure 4: Terraces in Florida (after Healy, 1975).


SI100 170


i II -U 31 J 411 l Ml

11 I\n1 3) 411 1 inl li 6n 1 II KM 1






OPEN FILE REPORT NO. 91


Alachua Karst Hills

The Alachua Karst Hills, present along the eastern edge of the study area, are part of
White's (1970) Northern Highlands. This physiographic unit is well drained and formed in
response to karstification of uplands covered by Hawthorn Group and undifferentiated
sediments. The karst hills are part of an erosional scarp retreat being formed as the Hawthorn
Group and younger sediments are eroded and karstified. This scarp is part of the extensive Cody
Scarp of Puri and Vernon (1964).
Regionally, the Alachua Karst Hills extend from northern Suwannee County to central
Alachua County (O.F.M.S. 98-03, Figure 3). Elevations range from approximately 100 feet (30.5
meters) to in excess of 200 feet (61 meters) above MSL. In the study area, the Alachua Karst
Hills are only present within central Suwannee County along the eastern boundary of the mapped
area, where elevations range from approximately 70 feet (21.3 meters) to 170 feet (51.8 meters)
above MSL (O.F.M.S. 98-03, Figure 3).

Branford Karst Plain

The Branford Karst Plain, which covers much of the eastern two-thirds of the map area,
occupies the Suwannee River valley, the Alapaha River valley, and the Withlacoochee River
valley (O.F.M.S. 98-03, Figure 3). Regionally, the plain extends south to the Santa Fe River on
the Gilchrist County line (Scott, 2005). Elevations in the karst plain range from less than 15 feet
(4.6 meters) above MSL along the Suwannee River to more than 140 feet (42.7 meters) above
MSL. Within the study area, elevations of the Branford Karst Plain range from 20 feet (6.1
meters) along the Suwannee River valley in the southeastern corner of the map area to 140 feet
(42.7 meters) above MSL in the northeastern portion of the map area (O.F.M.S. 98-03, Figure 1).
The Lower Oligocene Suwannee Limestone occurs in the northern half of the Branford
Karst Plain and crops out within the Withlacoochee and Alapaha River valleys and the northern
portion of the Suwannee River valley within the map area, while the Upper Eocene Ocala
Limestone is near the surface in the southern part of the Branford Karst Plain. Silicified "float"
boulders (remnants of the Lower Oligocene Suwannee Limestone and the Upper Eocene Ocala
Limestone) are common in the southeastern quadrant of the map area.
Drainage within the Branford Karst Plain is primarily through karst features with
relatively few surface streams. Closed topographic depressions (CTDs; Arthur et al. 2007) are
numerous throughout the karst plain, particularly east of the Suwannee River (O.F.M.S. 98-03,
Figure 1).

Perry Karst/San Pedro Bay

Regionally, the Perry Karst/San Pedro Bay complex extends from Madison County
southward to the Gulf of Mexico in Dixie County (O.F.M.S. 98-03, Figure 3). The Perry Karst is
the transition zone between the Woodville Karst Plain to the west and San Pedro Bay. Elevations
within this area range from less than 5 feet (1.5 meters) to in excess of 100 feet (30.5 meters) above
MSL. The elevations in San Pedro Bay are generally higher than in the Perry Karst area or the
Branford Karst Plain. Elevations decline to the south toward the Gulf coast. The Perry Karst area is
poorly to moderately drained while San Pedro Bay is extremely poorly drained. Copeland (2005)
provides an excellent discussion of the San Pedro Bay, its origin and surrounding areas. The Perry






FLORIDA GEOLOGICAL SURVEY


Karst/San Pedro Bay complex occupies much of the western and southwestern parts of the study
area. Within the map area, elevations of the Perry Karst/San Pedro Bay range from 45 feet (13.7
meters) to over 100 feet (30.5 meters) above MSL (O.F.M.S. 98-03, Figure 1).
The Suwannee Limestone underlies much of the Perry Karst/San Pedro Bay, although it is
absent under the central-southern and southeastern portions of the unit. In the San Pedro Bay, a clay
layer up to five feet (1.5 meters) thick overlies the limestone, providing confinement to the FAS
(Copeland, 1982). Plio-Pleistocene sediments cover the entire area, and the unit is poorly to very
poorly drained. Recharge to the FAS is low to moderate, while recharge to the FAS may be
moderate to high along the transition between the Perry Karst/San Pedro Bay and the Branford
Karst Plain (Copeland, 2005).

Okefenokee Basin District

The Okefenokee Basin District is recognized based on topography, drainage characteristics
and the general lack of karst features. East of the present study area, the Lake City Ridge subdivides
the district into northern and southern basins (Scott, 2005). In the northern Okefenokee Basin, the
hills are essentially absent and the entire area is poorly drained and flat. Hills are common and the
area is better drained in the Southern Okefenokee Basin. The basin extends into Florida from
Georgia and is recognized from Baker, Hamilton, and Columbia Counties on the north, southwards
to northern Alachua County (O.F.M.S 98-03, Figure 3). Where the Okefenokee Basin District
makes the transition to the Ocala Karst District, the land becomes well drained and has more relief.
Miocene Hawthorn Group (Th) sediments to Plio-Pleistocene siliciclastics underlie the
district. The Statenville Formation of the Hawthorn Group (Ths) occurs at or near the surface in the
western portion of the district, while Undifferentiated Plio-Pleistocene siliciclastics (TQu) underlie
the eastern portion of the district.

Northern Okefenokee Basin

The Northern Okefenokee Basin lies to the north of the Lake City Ridge, the Alachua Karst
Hills and the Branford Karst Plain and east of the Madison Hills (O.F.M.S. 98-03, Figure 3).
Northeast of the study area, the Okefenokee Swamp occupies much of the northern portion of the
Okefenokee Basin District from Georgia into Florida. The northern portion of the basin is very flat
with few hills. Hills become more common towards the western and eastern boundaries of the area.
Plio-Pleistocene siliciclastics underlie much of the northern Okefenokee Basin but are
poorly drained due to the near-surface presence of the Hawthorn Group clayey sediments and low
relief. The Statenville Formation of the Hawthorn Group (Ths) is at or near the surface in the
western part of the basin. Karst features, which are uncommon throughout most of the basin, occur
primarily in the transition zone with the Ocala Karst District where the Hawthorn Group is thin and
breached by sinkholes.
Elevations vary within the basin from approximately 100 feet (30.5 meters) to more than
190 feet (57.9 meters) above MSL (Scott, 2005). Where the Suwannee River occurs within the
district east of the study area, elevations along the river may be less than 50 feet (15.2 meters).
Within the map area, elevations range from 60 feet (18.3 meters) near the Suwannee River to 160
feet (48.8 meters) on some of the hilltops.






OPEN FILE REPORT NO. 91


Tifton Upland District

In northern Florida, the Tifton Upland District (Scott, 2005) encompasses the area referred
to as the Tallahassee Hills by White (1970). The uplands extend from the Apalachicola River
eastward to central Hamilton County at the Alapaha River (O.F.M.S. 98-03, Figure 2). The Tifton
Upland District's topography is characterized by broad, undulating hills with a well developed
dendritic drainage pattern.
The Tifton Upland District is present in the northwestern and northern portion of the map
area. Elevations in the district, which range from 35 feet (10.7 meters) above MSL in the major
stream and river valleys and in the swamps of the eastern portion of the district up to 300 feet (91.4
meters) MSL on the hilltops, decrease toward the southern limit of the district.

Madison Hills

Within the study area, Scott (2005) delineated one physiographic unit within the Tifton
Upland District: the Madison Hills. Regionally, the Madison Hills extend from the eastern end of
the Tallahassee Hills in central Jefferson County, eastward to eastern Madison County on the west
side of the Withlacoochee River (O.F.M.S. 98-03, Figure 3). The elevation of the Madison Hills
ranges from 70 feet (21.3 meters) in the valleys between the Withlacoochee and Alapaha rivers to
near 200 feet (61 meters) above MSL on some hill tops.
The Madison Hills are present in the northwestern portion of the map area, while a small
area (separated from the main body of this zone by the Withlacoochee River Valley) is present in
Hamilton County. Elevations within the map area for the Madison Hills range from 70 feet (21.3
meters) above MSL to 200 feet (61 meters) above MSL on some hilltops (O.F.M.S. 98-03, Figure
1).
The valleys within the Madison Hills are broad and poorly drained. The Miccosukee
Formation (Tmc) forms the higher areas while the Hawthorn Group sediments underlie the lower
portions of the landscape. Karst features occur in the eastern part of the district where the
Suwannee Limestone lies near the land surface.

Lithostratigraphic Units

Tertiary System

Eocene Series
Middle Eocene

The Middle Eocene Avon Park Formation (Tap), first described by Applin and Applin
(1944), is the oldest unit investigated in the present study area. The unit, which only occurs in the
subsurface in the study area, consists of cream to light-brown to tan, poorly indurated to well-
indurated, variably fossiliferous limestone (grainstone to wackestone, with rare mudstone). The
limestones are interbedded with tan to brown, very poorly indurated to well indurated, very fine
to medium crystalline, fossiliferous (molds and casts), vuggy dolostones. Fossils present in the
unit include molluscs, foraminifera, echinoids, algae and carbonized plant remains.






FLORIDA GEOLOGICAL SURVEY


The Avon Park Formation was only encountered in a few wells in the study area. The top
of the Avon Park ranges from 307 feet (93.6 meters) below MSL in W-2548 to 164 feet (50
meters) below MSL in W-4497 (cross-section D-D'; OFMS 98-02). No wells utilized for cross-
sections penetrated the entire section of the Avon Park Formation. The Avon Park Formation
forms part of the FAS (Southeastern Geological Society, 1986).

Eocene Series
Upper Eocene

The Upper Eocene Ocala Limestone (To), first described by Dall and Harris (1892) is a
biogenic marine limestone comprised largely of foraminifera, molluscs, echinoids and
bryozoans. Based on lithologic differences it can be informally subdivided into an upper and
lower unit (Scott, 1991a). This subdivision, while often apparent in cores and quarries, is
difficult to ascertain in cuttings. As a consequence of this, the geologic cross sections do not
break out the upper and lower Ocala Limestone.
The upper unit is typically a white to cream, fine- to coarse-grained, poorly- to well-
indurated, poorly sorted, very fossiliferous limestone (wackestone, packstone, and grainstone).
Fossils commonly include large foraminifers, bryozoans, mollusks, and a rich diversity of
echinoids. The lower unit is typically a white to cream, fine- to medium-grained, poorly- to
moderately- indurated limestone (grainstone to packstone). The unit may be partially
dolomitized. Fossils include foraminifera (such as Lepidocyclina sp., Heterostegina ocalana, and
miliolids), bryozoans, algae, mollusks, echinoids, and crabs.
Portions of the upper Ocala Limestone have been locally replaced by silica and upon
erosion large boulders may remain as residual float. The most likely source of silica is from
weathering of the Hawthorn Group sediments (Williams et al. 1977; Scott, 1988). There are
several processes that have occurred, or are occurring, in the Hawthorn Group which release
silica in solution and provide a source for silica in the replacement of carbonate rocks (Altshuler
et al. 1963; Mitchell, 1965; and Assefa, 1969). The occurrence of this float throughout the
southern portion of the study area is an indication that the Hawthorn Group once covered much
more of the study area and has been subsequently removed by erosion and weathering (O.F.M.S.
98-01).
The top of the Ocala Limestone, which is often karstified, ranges from 60 feet (18.2
meters) above MSL in W-187 (cross sections B-B' and E-E'; OFMS 98-02) to 109 feet (33.2
meters) below MSL in W-2549 (cross sections A-A', D-D', and E-E'; OFMS 98-02). Only a few
wells penetrated the entire thickness of the Ocala Limestone in the study area. In these wells, the
thickness of the Ocala Limestone ranges from 177 feet (53.9 meters) in W-2549 (cross-sections
A-A', D-D' and E-E'; OFMS 98-02) to 220 feet (67.1 meters) in W-2550 (cross section E-E';
OFMS 98-02). The Ocala Limestone is unconformably overlain by the Suwannee Limestone
(Ts) throughout much of the study area and by undifferentiated Quaternary sediments (Qu) in the
southern and southeastern portions of the study area. The Ocala Limestone forms part of the
Floridan aquifer system (Southeastern Geological Society, 1986).






OPEN FILE REPORT NO. 91


Oligocene Series
Lower Oligocene

The Lower Oligocene Suwannee Limestone (Ts), named by Cooke and Mansfield (1936)
for exposures of limestone along the Suwannee River from White Springs to Ellaville,
unconformably overlies the Ocala Limestone throughout most of the study area. The Suwannee
Limestone is primarily a white to cream, poorly to well indurated packstone to grainstone
comprised of miliolid tests, foraminifera, pelecypods, gastropods and echinoids. The echinoid
Rhyncholampas gouldii, an index fossil for the Suwannee Limestone, is commonly seen in
outcrops along the Suwannee River. The lithology is variably recrystallized and may range from
poorly indurated, friable limestone to well indurated limestone cemented by calcite spar.
Silicified residual boulders of the Suwannee Limestone ("float") are commonly found in the
south-central to southeastern portion of the study area, indicating that it once covered much of
the southern portion of the map area (O.F.M.S. 98-01).
The top of the Suwannee Limestone ranges from 5 feet (1.5 meters) above MSL in W-
12516 (cross section A-A'; OFMS 98-02) to 112 feet (34.1 meters) above MSL in W-15888
(cross section D-D'; OFMS 98-02). The Suwannee Limestone ranges in thickness from
approximately 5 feet (1.5 meters) in W-18768 (cross section B-B'; OFMS 98-02) to
approximately 160 feet (48.8 meters) in W-18767 (cross section A-A'; OFMS 98-02).
The unit is unconformably overlain by sediments of the Miocene Statenville Formation
(Ths; Hawthorn Group) in the northeastern portion of the map area, sediments of the Miocene
Torreya Formation (Tht; Hawthorn Group) in the northwestern portion of the study area, and
undifferentiated Quaternary sediments (Qu) throughout the remainder of the study area.
Evidence from cuttings and field data indicates that isolated remnants of the Suwannee
Limestone may occur throughout the southeastern portion of the map area (see W-358 and W-
13471 on cross section E-E'; OFMS 98-02). The Suwannee Limestone forms part of the Floridan
aquifer system (Southeastern Geological Society, 1986).

Miocene Series

Hawthorn Group (Th) sediments are encountered throughout much of the northern one-
third of the study area, where they unconformably overlie the Suwannee Limestone (O.F.M.S.
98-01). Sediments of the Hawthorn Group are thought to have been deposited onto the platform
throughout the area, but Post-Miocene erosion removed sediments from the crest of the Ocala
Platform exposing the Eocene carbonates in the southern portion of the map area (Cooke, 1945;
Espenshade and Spencer, 1963; Brooks, 1966; and Scott, 1981b). Fossils in the Hawthorn Group
are sparse but may include vertebrate remains, corals, and mollusks. Williams et al. (1977) report
that the most commonly found fossils are oysters and coral heads. Silicified coral heads were
observed in the Suwannee, Withlacoochee, and Alapaha Rivers during field work. Within the
map area, the Miocene Hawthorn Group (Th) is composed of the Lower Miocene Torreya
Formation (Tht) and the Middle Miocene Statenville Formation (Ths). The Torreya Formation is
present west of the Withlacoochee River, while the Statenville Formation (Ths) occurs east of
the Withlacoochee River (O.F.M.S. 98-01).






FLORIDA GEOLOGICAL SURVEY


Lower Miocene

The Lower Miocene Torreya Formation of the Hawthorn Group (Tht) is typically a
siliciclastic unit with increasing amounts of carbonate in the lower portion of the unit. The
majority of the outcrops of the Torreya Formation expose the siliciclastic part of the unit which
varies from white to light olive gray unconsolidated to poorly indurated slightly clayey sands to
light gray to bluish gray, poorly consolidated silty clay often containing a variable but minor
component of carbonate (calcareous or dolomitic). Phosphate grains, while a common but minor
lithologic component of the unit are often absent (Scott, 1988).
The carbonate sediments of the Torreya Formation are white to light olive gray, poorly
indurated, variably sandy and clayey limestones. The limestone (mudstone and wackestone)
often contains molds and casts of mollusks. The Torreya Formation overlies the Floridan aquifer
system and forms part of the intermediate aquifer system/intermediate confining unit (IAS/ICU)
(Southeastern Geological Society, 1986).
The top of the Torreya Formation ranges from 84 feet (25.6 meters) above MSL in W-
2549 (cross sections A-A', D-D', and E-E'; OFMS 98-02) to 144 feet (43.9 meters) above MSL
in W-15888 (cross section D-D'; OFMS 98-02). In wells utilized for cross sections, the unit
ranges from 10 feet (3 meters) thick in W-704 (cross section E-E'; OFMS 98-02) to 80 feet (24.4
meters) thick in W-12516 (cross section A-A'; OFMS 98-02).

Middle Miocene

The Middle Miocene Statenville Formation of the Hawthorn Group (Ths) occurs within
limited areas of the northeastern portion of the map area along the northeastern flank of the
Ocala Platform (Scott, 2001b). The Statenville Formation consists of poorly to moderately
indurated, interbedded quartz sands, clays and dolostones. Phosphate grains are common to
abundant in the unit. The unit is lithologically variable and beds may pinch out and interfinger
both laterally and vertically. Outcrops of the Statenville Formation in the study area are
characteristically thin-bedded and often cross-bedded, generally consisting of thinly interbedded
layers of dolostone and clay alternating with beds of sand. The Statenville Formation forms part
of the IAS/ICU (Southeastern Geological Society, 1986).
The top of the Statenville Formation ranges from 60 feet (18.3 meters) above MSL along
parts of the Suwannee River to 160 feet (48.8 meters) above MSL in hills north of Live Oak
(cross section F-F'; OFMS 98-03). The Statenville Formation ranges up to 100 feet (30.5 meters)
in thickness in the northeastern portion of the map area (cross section F-F'; OFMS 98-03).

Tertiary-Quaternary Systems

Pliocene Series

The Pliocene Miccosukee Formation (Tmc), named by Hendry and Yon (1967), is a
prodeltaic siliciclastic unit composed of grayish-orange to grayish-red, mottled, poorly- to
moderately indurated, interbedded clay, sand and gravel of variable coarseness and admixtures.
The unit has limited distribution in the eastern panhandle of Florida and occurs from central
Gadsden County (west of the study area) to eastern Madison County (Scott et al. 2001).






OPEN FILE REPORT NO. 91


The top of the unit, present within a limited area in the northwestern comer of the map
area, ranges from approximately 100 feet (30.5 meters) above MSL to approximately 200 feet
(61 meters) above MSL (cross sections A-A', D-D' and E-E'; OFMS 98-02). The Miccosukee
Formation ranges from a few feet to approximately 100 feet (30.5 meters) in thickness in this
area. The unit is relatively impermeable due to its high clay content, but is considered to be part
of the SAS (Southeastern Geological Society, 1986).

Pleistocene Series

Undifferentiated Quaternary sediments (Qu) lie unconformably on either the Eocene
Ocala Limestone (To), the Oligocene Suwannee Limestone (Ts), the Miocene Torreya Formation
(Tht), or the Miocene Statenville Formation (Ths) throughout much of the study area. These
sediments, which generally consist of sandy clays and clayey sands, often include weathered and
silicified boulders of the Ocala Limestone and Suwannee Limestone ("float"). The
undifferentiated Quaternary sediments (Qu) are part of the surficial aquifer system (SAS;
Southeastern Geological Society, 1986).
Sediments mapped as Quaternary Beach Ridges and Dunes (Qbd) exhibit discernable
beach ridges and dune features. These sediments consist of unconsolidated light gray to tan fine
to medium quartz sand with variable percentages of organic material. They are only present in a
small area in the extreme southeastern portion of the map area. The Quaternary Beach Ridges
and Dunes (Qbd) sediments are part of the SAS.

Hydrogeology

The hydrogeology of the map area consists of (in ascending order) the Floridan aquifer
system (FAS), the intermediate aquifer system/intermediate confining unit (IAS/ICU), and the
surficial aquifer system (SAS) (Southeastern Geological Society, 1986). The FAS, which is the
primary source of drinking water in the region, is generally comprised of carbonate units of the
Avon Park Formation, the Ocala Limestone, and the Suwannee Limestone. The sands, silts, and
clays of the Hawthorn Group comprise the intermediate aquifer system/intermediate confining
unit. The surficial aquifer system is comprised of the Miccosukee Formation and
undifferentiated Quaternary sediments.
Where siliciclastic sediments of the Hawthorn Group and Miccosukee Formation are
thick, they provide confinement for the Floridan aquifer system, but where the siliciclastic
sediments of the Hawthorn Group and younger units are thin or missing, karst features often
occur. "Swallets" (stream-to-sink features) are of particular concern to geoscientists and
hydrogeologists in the area. Numerous swallets occur along the western edge of the Alachua
Karst Hills and provide avenues for direct recharge to the FAS by surface water and runoff from
agricultural and urban areas (O.F.M.S. 98-03, Figure 1).

Derivative Products

Several derivative products will come from this project. During the mapping project, data
from several hundred wells (Table 1) were analyzed. Formation picks, made on all available
wells, will allow for the creation of a structure contour map of the top of rock in the study area,
along with an isopach map of overburden for the area. Several of the authors of this report are






FLORIDA GEOLOGICAL SURVEY


working on an additional publication, which is beyond the scope of the original project, which
will depict these maps. Additional derivative data that is anticipated to come from this mapping
effort includes an aquifer vulnerability assessment map. Data derived from prior STATEMAP
products has often been used to augment other FGS and FAVA projects in the state (Arthur et al.
2007; Baker et al. 2007).

Selected Bibliography


Allison, D., Groszos, M., and Rupert, F. R., 1995, Top of rock in the Floridan Aquifer System in
the Suwannee River Water Management District: Florida Geological Survey Open File Map
Series 84, scale 1:475,000.

Alt, D., and Brooks, H.K., 1965, Age of the Florida marine terraces: Journal of Geology, v. 73,
no. 2, p. 406-411.

Altshuler, Z.S., Dwomik, E. J., and Kramer, H., 1963, Transformation of montmorillonite to
kaolinite during weathering: Science, v. 141, no. 3576, p. 148-152.

Applin, P., 1951, Possible future petroleum provinces of North America Florida: American
Association of Petroleum Geologists Bulletin, v. 35, p. 405-407.

Applin, P.L., and Applin, E.R., 1944, Regional subsurface stratigraphy and structure of Florida
and southern Georgia: American Association of Petroleum Geologists Bulletin, v. 28, p. 1673-
1753.

Arthur, J.D., 1991, The geomorphology, geology and hydrogeology of Lafayette County,
Florida: Florida Geological Survey Open File Report 45, 10 p.

Arthur, J.D., Baker, J., Cichon, J., Wood, A., and Rudin, A., 2007 (in review), Florida Aquifer
Vulnerability Assessment (FAVA): Contamination potential of Florida's principal aquifer
systems: Florida Geological Survey Bulletin 67.

Assefa, G., 1969, Mineralogy and petrology of selected rocks from the Hawthorn Formation,
Marion and Alachua counties, Florida [Master's thesis]: Gainesville, University of Florida, 80 p.

Baker, A.E., Wood, H.A.R., and Cichon, J.R., 2007, The Marion County Aquifer Vulnerability
Assessment; final report submitted to Marion County Board of County Commissioners in
fulfillment of Marion County Project No. SS06-01, March 2007, 42 p. (unpublished).

Brooks, H.K., 1966, Geological history of the Suwannee River, in Southeastern Geological
Society, 12th Annual Field Conference Guidebook, p. 37-45.

Campbell, K., 1993a, Geologic map of Madison County, Florida: Florida Geological Survey
Open File Map Series 27, scale 1: 126,720.






OPEN FILE REPORT NO. 91


Campbell, K., 1993b, Geologic map of Taylor County, Florida: Florida Geological Survey Open
File Map Series 29, scale 1:126, 720.

Campbell, K., 1993c, Geologic map of Lafayette County, Florida: Florida Geological Survey,
Open File Map Series 34, scale 1: 126,720.

Ceryak, R., Knapp, M.S., and Burnson, T., 1983, The Geology and Water Resources of the
Upper Suwannee River Basin, Florida: Florida Geological Survey, Report of Investigation 87,
165 p.

Colquhoun, D.J., 1969, Coastal plain terraces in the Carolinas and Georgia, U.S.A.: Wright,
H.E., Jr., editor, Quaternary Geology and Climate: Volume 16 of the Proceedings of the VII
Congress of the International Association for Quaternary Research, v. 16, p. 150-162.

Colton, Richard C., 1978, The subsurface geology of Hamilton County Florida with emphasis on
the Oligocene age Suwannee Limestone [Master's thesis]: Tallahassee, Florida State University,
185 p., 12 plates.

Cooke, C.W., 1916, The age of the Ocala Limestone: United States Geological Survey
Professional Paper 95-I, p. 107-117.

Cooke, C.W., 1931, Seven coastal terraces in the southeastern United States: Washington
Academy of Sciences Journal, v. 21, p. 503-513.

Cooke, C.W., 1939, Scenery of Florida interpreted by a geologist: Florida Geological Survey
Bulletin 17, 120 p.

Cooke, C.W., 1945, Geology of Florida: Florida Geological Survey Bulletin 29, 342 p.

Cooke, C.W., and Mansfield, W.C., 1936, Suwannee Limestone of Florida [Abstract]:
Geological Society of America Proceedings, 1935, p. 71-72.

Copeland, R.E., 1982, Identification of Groundwater Geochemical Patterns in the Western
Portion of the Suwannee River Water Management District, in Beck, B., ed., Studies of the
Hydrogeology of the Southeastern United States: 1981: Special Publication No. 1, Georgia
Southwestern College, Americus, GA., p. 19-29.

Copeland, R., 2003, Florida spring classification system and spring glossary: Florida Geological
Survey Special Publication 52, 17 p.

Copeland, R., 2005, Geomorphic influence of scarps in the Suwannee River Basin: Spring Field
Trip, May 7, 2005, in Southeastern Geological Society Guidebook 44, 56p.

Dall, W.H., and Harris, G.D., 1892, Correlation papers, Neocene: United States Geological
Survey Bulletin 84, 349 p.






FLORIDA GEOLOGICAL SURVEY


Espenshade, G.H., and Spencer, C.W., 1963, Geologic features of phosphate deposits of northern
peninsular Florida: United States Geological Survey Bulletin 1118, 115 p.

Evans, W.L., III, Green R.C., Bryan J.R., and Paul, D.T., 2004, Geologic map of the western
portion of the U.S.G.S. 1:100,000 scale Gainesville Quadrangle, Northern Florida: Florida
Geological Survey Open File Map Series No. 93, 2 plates, scale 1:100,000.

Flint, R.F., 1940, Pleistocene features of the Atlantic coastal plain: American Journal of Science,
v., 238, p. 757-787.

Flint, R.F., 1971, Glacial and Quaternary Geology: New York, John Wiley and Sons, Inc., 892 p.

Green, R.C., Evans, W.L., III, Paul, D.T., and Scott, T.M., 2005, Geologic map of the eastern
portion of the U.S.G.S. 1:100,000 scale Gainesville Quadrangle, Northern Florida: Florida
Geological Survey Open-File Map Series No. 94, 2 plates, scale 1:100,000.

Green, R.C., Paul, D.T., Evans, W.L., Scott, T.M., and Petrushak, S.B., 2006, Geologic map of
the western portion of the USGS 1:100,000 scale Lake City quadrangle, northern Florida: Florida
Geological Survey Open File Map Series 97, 2 plates, scale 1:100,000.

Groszos, M., Ceryak, R., and Alison, D., 1992, Carbonate units of the intermediate aquifer
system in the Suwannee River Water Management District: Florida Geological Survey Open File
Report, 54, 22 p.

Groszos, M., and Rupert, F.R., 1992, An isopach map of the Hawthorn Group in the Suwannee
River Water Management District: Florida Geological Survey Open File Map Series 2, scale
1:250, 000.

Healy, H.G., 1975, Terraces and shorelines of Florida: Florida Geological Survey Map Series
No. 71, scale: 1:2,095,200.

Hendry, C.W., Jr., and Yon, J.W., Jr., 1967, Stratigraphy of Upper Miocene Miccosukee
Formation, Jefferson and Leon Counties, Florida: American Association of Petroleum Geologists
Bulletin, v. 51, p. 250-256.

Hoenstine, R.W., and Weissinger, S., 1982, A geologic guide to the Suwannee River,
Ichetucknee Springs, O'leno and Manatee Springs State Parks: Florida Geological Survey Leaflet
12, 28 p.

Hoenstine, R.W., Spencer, S.M., and O'Carroll, T., 1990, Geology and ground-water resources
of Madison County, Florida: Florida Geological Survey Bulletin 61, 93 p.

Hoenstine, R.W., Spencer, S.M., and Lane, E., 1993, Mineral resources of Suwannee County,
Florida: Florida Geological Survey Map Series 137, scale 1:126,720.






OPEN FILE REPORT NO. 91


Hopkins, O.B., 1920, Drilling for oil in Florida: United States Geological Survey Press Bulletin,
April, 1920.

Hornsby, H.D., and Ceryak, R., 1998, Springs of the Suwannee River Basin in Florida: Live
Oak, Suwannee River Water Management District, 178 p.

Houston, T.B., 1965, Soil survey, Suwannee County, Florida: U.S. Department of Agriculture,
Soil Conservation Service, ser. 1961, no. 21, 101 p.

Howell, D.A., and Williams, C. A., 1990, Soil survey of Madison County, Florida: U.S.
Department of Agriculture, Soil Conservation Service, 160 p.

Huddlestun, P.F., 1988, A revision of lithostratigraphic units of the Coastal Plain of Georgia -
Miocene: Georgia Geological Survey Bulletin 104, 162 p.

Huddlestun, P.F., and Hunter, M.E., 1982, Stratigraphic revision of the Torreya Formation of
Florida, in Scott, T.M., and Upchurch, S.B., (eds.) Miocene of the southeastern United States,
Proceedings of the symposium: Florida Geological Survey Special Publication, 25, 210 p.

Hunter, M.E., and Huddlestun, P.F., 1982, The biostratigraphy of the Torreya Formation of
Florida, in Scott, T.M., and Upchurch, S.B., (eds.) Miocene of the southeastern United States,
Proceedings of the symposium: Florida Geological Survey Special Publication, 25, 210 p.

Knapp, M.S., 1978, Environmental geology series Valdosta Sheet: Florida Geological Survey
Map Series 88, scale 1:250,000.

Knapp, M.S., Copeland, R. E., Scott, T.M., Ceryak, R., Price, D., and Burnson, T., 1981, Karst
hydrogeology and Miocene geology of the upper Suwannee River Basin, Hamilton County,
Florida, October 23-24, 1981: Southeastern Geological Society Guidebook, 23, 36 p.

Lane, E., Hoenstine, RW., and Spencer, S.M., 1993, Mineral resources of Columbia County,
Florida: Florida Geological Survey Map Series 136, scale 1:126,720.

Macesich, M., and Martinez, N., 1992, Mines and quarries greater than 10 acres in size in the
Suwannee River Water Management District: Florida Geological Survey Open File Map Series
1, scale 1:250, 000.

MacNeil, F.S., 1950, Pleistocene shorelines in Florida and Georgia: United States Geological
Survey Professional Paper 221-F, p. 95-107.

Matson, G.C., and Sanford, S., 1913, Geology and groundwater of Florida: United States
Geological Survey Water Supply Paper 319, 445 p.

Miller, J.A., 1986, Hydrogeologic framework of the Florida aquifer system in Florida and in
parts of Georgia, Alabama, and South Carolina: Regional Aquifer-System Analysis: united
States Geological Survey Professional Paper 1403-B, Washington, 91p., 33 plates.






FLORIDA GEOLOGICAL SURVEY


Mitchell, C.L., 1965, Petrology of selected carbonate rocks from the Hawthorn Formation,
Devil's Mill Hopper, Alachua County, Florida [Master's thesis]: Gainesville, University of
Florida, 51 p.

Pirkle, E.C., Jr., Yoho, W.H., and Hendry, C.W., Jr., 1970, Ancient sea level stands in Florida:
Florida Geological Survey Bulletin 52, 61 p.

Price, D., 1981, Paleokarst features in Hamilton County, Florida, in Southeastern Geological
Society, Field Conference Guidebook, vol. 23, p. 30-32.

Puri, H.S., 1957, Stratigraphy and zonation of the Ocala group: Florida Geological Survey
Bulletin 38, 248 p.

Puri, H.S., and Vernon, R.O., 1964, Summary of the geology of Florida and a guidebook to the
classic exposures: Florida Geological Survey Special Publication 5, revised, 312 p.

Randazzo, A.F., 1972, Petrography of the Suwannee Limestone; part II: Florida Geological
Survey Bulletin, 54, 13 p.

Randazzo, A.F., and Jones, D.S., eds., 1997, The Geology of Florida: Gainesville, University
Press of Florida, 327 p.

Rupert, F., 1989, The geology of Hamilton County, Florida: Florida Geological Survey Open
File Report 27, 5 p.

Rupert, F.R., 1996, The geomorphology and geology of Taylor County, Florida: Florida
Geological Survey Open File Report 70, 7 p.

Rupert, F., 2003, The geology of Suwannee County, Florida: Florida Geological Survey, Open
File Report 86, 9 p.

Rupert, F., Lloyd J., and Campbell K., 1993, Geologic map of Suwannee County, Florida:
Florida Geological Survey, Open File Map Series 33, scale: 1:126,720.

Schmidt, W., 1984, Neogene stratigraphy and geologic history of the Apalachicola Embayment,
Florida: Florida Geological Survey Bulletin 58, 146p.

Scott, T.M., 1981a, The paleo-extent of the Miocene Hawthorn Formation in peninsular Florida
[abs]: Florida Scientist, v. 44, Supplement 1, p.42.

Scott, T.M., 1981b, The Hawthorn Formation of North Florida: Southeastern Geological Society,
Field Conference Guidebook, vol. 23, p. 15-23.

Scott, T.M., 1988, The lithostratigraphy of the Hawthorn Group (Miocene) of Florida: Florida
Geological Survey Bulletin 59, 148 p.






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Scott, T.M., 1989, The lithostratigraphy of the sediments exposed along the Suwannee River in
the vicinity of White Springs, in Southeastern Geological Society, Field Conference Guidebook,
v. 30, p. 6-13.

Scott, T.M., 1991a, Depositional patterns of the Hawthorn Group in Florida: Geological Society
of America Abstracts with Programs v. 23, p. 126.

Scott, T.M., 1991b, A geological Overview: in Scott, T.M., Lloyd, J.M., and Maddox, G.L.,
(eds.), 1991, Florida's ground-water quality monitoring program, hydrogeologic framework:
Florida Geological Survey Special Publication 32, 97 p.

Scott, T.M., 1992, A geological overview of Florida: Florida Geological Survey Open File
Report 50, 78 p.

Scott, T.M., 1993, Geologic map of Hamilton County, Florida: Florida Geological Survey, Open
File Map Series 32, scale: 1:126,720.

Scott, T.M., 1997, Miocene to Holocene history of Florida: in Randazzo, A.F., and Jones, D.S.,
eds., 1997, The Geology of Florida: Gainesville, University Press of Florida, 327 p.

Scott, T.M., 2001, Text to accompany the geologic map of Florida: Florida Geological Survey
Open File Report 80, 29 p.

Scott, T.M., 2005, Revisions to the geomorphology of Florida focusing on the eastern panhandle
and north-central Florida, in Southeastern Geological Society Field Trip Guidebook 44, pp. 18-
36.

Scott, T.M., (in preparation) Geomorphic map of Florida: Florida Geological Survey, scale
1:750,000.

Scott, T.M., Campbell, K.M., Rupert, F.R., Arthur, J.A., Green, R.C., Means, G.H., Missimer,
T.M., Lloyd, J.M., and Duncan, J.G., 2001, Geologic map of Florida: Florida Geological Survey
Map Series 146, scale 1:750,000.

Scott, T.M., Means, G.H., Means, R.C., and Meegan R.P., 2002, First magnitude springs of
Florida: Florida Geological Survey Open File Report 85, 138 p.

Scott, T.M., Means, G.H., Meegan, R.P., Means, R.C., Upchurch, S.B., Copeland, R.E., Jones, J.,
Roberts, T., and Willet, A., 2004, Springs of Florida: Florida Geological Survey Bulletin 66,
377 p.

Southeastern Geological Society (SEGS) Ad Hoc Committee on Florida Hydrostratigraphic Unit
Definition, 1986, Hydrogeological units of Florida: Florida Geological Survey Special
Publication 28, 8 p.






FLORIDA GEOLOGICAL SURVEY


Spencer, S.M., Rupert, F., Hoenstine R.W., and Lane, E., 1993, Mineral resources of Hamilton
County, Florida: Florida Geological Survey Map Series 135, scale 1:126,720.

Spencer, S.M., Yon, J.W., Hoenstine, R.W., and Lane, E., 1988, Mineral resources of Madison
County, Florida: Florida Geologic Survey Map Series 121, scale 1: 126,720.

Stubbs, S.A., 1940, Solution a dominant factor in the geomorphology of peninsular Florida:
Florida Academy of Sciences Proceedings, v. 5, p.148-157.

Upchurch, S.B., Champion, K.M., Schnieder, J.C., Hornsby, D., Ceryak, R., and Zwanka, W.,
and Suppl, 2004, Defining springshed boundaries and water-quality domains near first-
magnitude springs in north Florida: Florida Scientist, v. 67, issue suppl. 1, 52 p.

U.S. Geological Survey, 1981, 1:100,000-scale metric topographic map of Lake City, Florida:
Reston, U.S. Geological Survey.

Vernon, R.O., 1951, Geology of Citrus and Levy Counties, Florida: Florida Geological Survey
Bulletin 33, 256 p.

Watts, F.C., Readle, E.L., Dearstyne, D.A., and Weatherspoon, R.L., 2000, Soil survey of Taylor
County, Florida: U.S. Department of Agriculture, Natural Resources Conservation Service, 311
p.

Weatherspoon, R.L., Baldwin, R., Howell, D.A., 2004, Soil survey of Hamilton County, Florida:
U.S. Department of Agriculture, Natural Resources Conservation Service, 189 p.

Weatherspoon, R.L., 2006, Soil Survey of Suwannee County, Florida: U.S. Department of
Agriculture, Natural Resources Conservation Service, 449 p.

Weatherspoon, R.L., Anderson, K., Anzalone, W., Bednarek, R., Chibirka, J., Cummings, E.,
Dahl, R., French, C., Jakel, D., Johnson, W.R., Neilson, R.W., and Shurtliff, D., 1998, Soil
survey of Lafayette County, Florida: U.S. Department of Agriculture, Soil Conservation Service,
201p.

White, W.A., 1970, The geomorphology of the Florida peninsula: Florida Geological Survey
Bulletin 51, 164 p.

Williams, K.E., Nicol, D., and Randazzo, A.F., 1977, The geology of the western part of
Alachua County, Florida: Florida Geological Survey Report of Investigation 85, 97 p.

Winkler, W., 1996, Surface water and groundwater interaction along the Cody Scarp transition
region of the Suwannee River Basin near Live Oak, Florida, in Southeastern Geological Society,
Guidebook 36, p. 1-15.






OPEN FILE REPORT NO. 91


Acknowledgements

The authors would like to thank: Brian Kauffman, Gwen Lord, Bob Heeke, and Carlos Herd
of the Suwannee River Water Management District (SRWMD) for access to district lands; Ron
Ceryak for providing well information for the SRWMD; Steven Carpenter of the Division of
Forestry for access to the Twin Rivers and Holton Creek Wildlife Management Areas. The late
James H. Balsillie is thanked for his invaluable contributions in the field and in discussing this
project with the authors. Ken Campbell, Bridget Coane, Adam Humphreys, Tom Greenhalgh,
Nick John, Harley Means, Sarah Ramdeen, Guy Richardson, and David Wagner provided
additional field support. David Anderson provided assistance with ArcMap and GIS analyses.
Rick Copeland, Jackie Lloyd, Harley Means, Frank Rupert, and Walt Schmidt are thanked for
their time in reviewing, discussing, and editing the product. This geologic map was funded in
part by the USGS National Cooperative Geologic Mapping Program and in part by the
FDEP/FGS.








FLORIDA GEOLOGICAL SURVEY



Table 1: Wells utilized for study.


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) epth
(Feet)
1 W-187 FGS CUTTINGS 30 17 21.70 83 18 45.21 Madison SE 90 129
2 W-358 FGS CUTTINGS 30 10 57.25 83 10 55.00 Dowling Park 70 57
3 W-704 FGS CUTTINGS 30 23 02.13 83 21 23.46 Lee 93 90
4 W-1066 FGS CUTTINGS 30 14 29.30 83 15 01.67 Day 50 81
5 W-1451 FGS CUTTINGS 30 18 26.55 83 00 25.72 Live Oak West 102 268
6 W-2000 FGS CUTTINGS 30 00 37.02 83 16 46.04 Day SE 78 4560
7 W-2548 FGS CUTTINGS 30 26 11.04 83 25 47.60 Madison 143 520
8 W-2549 FGS CUTTINGS 30 28 19.73 83 25 44.60 Madison 99 515
9 W-2550 FGS CUTTINGS 30 26 51.24 83 24 43.42 Madison 170 540
10 W-4497 FGS CUTTINGS 30 04 05.09 83 30 0.99 Perry 61 460
11 W-8389 FGS CUTTINGS 30 12 20.15 83 12 38.06 Dowling Park 80 330
12 W-8390 FGS CUTTINGS 30 27 26.01 83 13 32.10 Ellaville 66 170
13 W-12247 FGS CUTTINGS 30 14 49.00 83 01 53.00 Mayo NE 96 4510
14 W-12516 FGS CUTTINGS 30 25 47.35 83 18 11.46 Lee 90 90
15 W-13122 FGS CUTTINGS 30 01 45.08 83 29 50.00 Fenholloway 57 49
16 W-13218 FGS CUTTINGS 30 30 04.46 83 04 23.56 Jennings 85 156
17 W-13471 FGS CUTTINGS 30 09 10.00 83 10 15.00 Dowling Park 77 180
18 W-13479 FGS CUTTINGS 30 25 34.06 83 23 12.00 Madison 105 100
19 W-13786 FGS CUTTINGS 30 27 16.00 83 21 35.00 Lee 110 138
20 W-15854 FGS CORE 29 59 57.23 83 03 27.15 Mallory Swamp NE 65 65
21 W-15867 FGS CORE 30 03 52.07 83 11 51.14 Mayo 72 53
22 W-15888 FGS CORE 30 23 06.10 83 26 37.89 Madison 160 89
23 W-15952 FGS CORE 30 01 29.76 83 26 02.52 Fenholloway 73 36
24 W-15980 FGS CORE 30 20 38.67 83 19 30.79 Madison SE 90 52
25 W-15983 FGS CORE 30 16 29.10 83 24 37.01 Madison SW 99 62
26 W-16510 FGS CUTTINGS 30 02 05.96 83 02 45.48 Mayo SE 42 17
27 W-16514 FGS CUTTINGS 30 03 51.51 83 07 46.91 Mayo 59 45
28 W-17904 FGS CORE 30 04 56.08 83 02 30.43 Mayo SE 46 48
29 W-18767 FGS CORE 30 26 27.00 83 03 39.00 Fort Union 93 229
30 W-18768 FGS CORE 30 17 57.10 83 14 26.90 Falmouth 62 69
31 W-18771 FGS CORE 30 16 14.28 83 28 25.08 Madison SW 101 199
32 W-18770 FGS CORE 30 08 47.31 83 27 15.57 DayNW 87 129
33 W-400 FGS CUTTINGS 30 03 10.89 83 10 47.98 Mayo 78 200
34 W-1021 FGS CUTTINGS 30 29 11.05 83 00 36.14 Fort Union 85 185
35 W-1061 FGS CUTTINGS 30 17 07.37 83 19 20.38 Madison SE 92 27
36 W-1067 FGS CUTTINGS 30 05 22.81 83 13 37.22 Mayo 65 28
37 W-1751 FGS CUTTINGS 30 28 50.85 83 25 0.56 Madison 95 325
38 W-1827 FGS CUTTINGS 30 12 03.21 83 07 44.10 Dowling Park 85 3819
39 W-1951 FGS CUTTINGS 30 10 55.00 83 09 21.00 Dowling Park 80 160
40 W-2145 FGS CUTTINGS 30 23 07.15 83 10 36.30 Ellaville 57 45
41 W-2155 FGS CUTTINGS 30 27 45.51 83 24 00.27 Madison 181 154
42 W-2576 FGS CUTTINGS 30 28 09.31 83 23 36.20 Madison 178 175
43 W-2987 FGS CUTTINGS 30 27 06.72 83 24 40.63 Madison 129 185
44 W-3014 FGS CUTTINGS 30 05 43.00 83 14 06.00 Mayo 67 80
45 W-4460 FGS CUTTINGS 30 04 11.02 83 29 03.03 Fenholloway 63 360
46 W-4496 FGS CUTTINGS 30 04 02.82 83 29 31.59 Fenholloway 62 411
47 W-4942 FGS CUTTINGS 30 11 30.01 83 18 51.10 Day 86 175
48 W-5208 FGS CUTTINGS 30 23 33.02 83 11 02.07 Ellaville 60 240








OPEN FILE REPORT NO. 91


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
49 W-6359 FGS CUTTINGS 30 04 45.66 83 29 52.11 Fenholloway 62 65
50 W-6534 FGS CUTTINGS 30 08 35.04 83 14 47.01 Dowling Park 68 100
51 W-6858 FGS CUTTINGS 30 09 55.85 83 14 50.67 Dowling Park 58 62
52 W-7231 FGS CUTTINGS 30 28 17.48 83 28 18.85 Madison 95 60
53 W-7232 FGS CUTTINGS 30 28 05.00 83 26 15.00 Madison 110 56
54 W-7234 FGS CUTTINGS 30 28 16.53 83 27 27.19 Madison 140 45
55 W-7641 FGS CUTTINGS 30 27 51.47 83 12 41.09 Ellaville 85 110
56 W-7798 FGS CUTTINGS 30 21 57.15 83 09 34.23 Falmouth 80 370
57 W-7800 FGS CUTTINGS 30 22 07.05 83 09 36.07 Falmouth 70 220
58 W-8078 FGS CUTTINGS 30 28 21.70 83 24 57.06 Madison 190 420
59 W-10300 FGS CUTTINGS 30 28 10.00 83 11 44.00 Ellaville 90 80
60 W-10654 FGS CORE 30 23 53.48 83 10 36.43 Ellaville 57 70
61 W-10655 FGS CORE 30 24 06.01 83 11 52.34 Ellaville 60 42
62 W-10656 FGS CORE 30 25 08.89 83 11 04.21 Ellaville 68 62
63 W-10657 FGS CORE 30 23 01.00 83 10 20.00 Ellaville 65 72
64 W-11753 FGS CUTTINGS 30 15 02.99 83 14 31.08 Falmouth 55 139
65 W-12608 FGS CUTTINGS 30 24 24.00 83 13 52.00 Ellaville 84 120
66 W-12960 FGS CUTTINGS 30 08 14.07 83 19 03.98 Day 86 120
67 W-13024 FGS CUTTINGS 30 22 19.15 83 22 43.07 Madison SW 97 145
68 W-13029 FGS CUTTINGS 30 16 41.04 83 03 04.04 Live Oak West 90 70
69 W-13200 FGS CUTTINGS 30 16 58.40 83 13 23.79 Falmouth 55 24
70 W-13201 FGS CUTTINGS 30 06 26.63 83 16 54.13 Day SE 82 30
71 W-13205 FGS CUTTINGS 30 12 45.10 83 15 45.00 Day 66 27
72 W-13305 FGS CUTTINGS 30 21 18.41 83 07 56.98 Falmouth 75 32
73 W-13366 FGS CUTTINGS 30 22 08.00 83 16 30.00 Madison SE 84 165
74 W-13376 FGS CUTTINGS 30 14 45.07 83 04 27.00 Mayo NE 88 100
75 W-13946 FGS CUTTINGS 30 29 45.91 83 22 26.15 Lee 149 160
76 W-13998 FGS CUTTINGS 30 20 30.00 83 18 34.00 Madison SE 88 35
77 W-14051 FGS CUTTINGS 30 28 10.00 83 26 50.00 Madison 150 165
78 W-14856 FGS CUTTINGS 30 22 12.00 83 28 35.00 Madison SW 110 90
79 W-14866 FGS CUTTINGS 30 06 12.00 83 26 0.00 Fenholloway 80 34
80 W-15803 FGS CORE 30 26 49.00 83 24 07.00 Madison 161 100
81 W-15853 FGS CORE 30 06 20.22 83 26 50.82 Fenholloway 80 98
82 W-15936 FGS CORE 30 28 48.99 83 14 44.36 Ellaville 60 75
83 W-15950 FGS CORE 30 01 08.36 83 25 33.37 Fenholloway 73 28
84 W-15953 FGS CORE 30 04 23.37 83 19 08.24 Day SE 87 42
85 W-15974 FGS CORE 30 20 49.17 83 29 34.40 Madison SW 103 93
86 W-15981 FGS CORE 30 22 18.23 83 13 58.95 Falmouth 71 62
87 W-15982 FGS CORE 30 22 13.90 83 21 44.01 Madison SE 95 45
88 W-15984 FGS CORE 30 24 49.41 83 17 51.41 Lee 80 57
89 W-16508 FGS CUTTINGS 30 05 26.13 83 09 15.66 Mayo 53 25
90 W-16509 FGS CUTTINGS 30 04 42.84 83 06 01.50 Mayo SE 49 15
91 W-16512 FGS CUTTINGS 30 02 33.57 83 05 43.75 Mayo SE 63 25
92 W-16513 FGS CUTTINGS 30 02 33.28 83 06 44.54 Mayo SE 72 98
93 W-16515 FGS CUTTINGS 30 02 49.44 83 04 52.06 Mayo SE 51 20
94 W-16517 FGS CUTTINGS 30 17 50.32 83 01 18.02 Live Oak West 103 18
95 W-16518 FGS CUTTINGS 30 17 26.74 83 00 25.94 Live Oak West 93 75
96 W-16753 FGS CORE 30 25 06.04 83 17 54.01 Lee 92 80
97 W-17902 FGS CORE 30 04 46.53 83 02 45.81 Mayo SE 46 63
98 W-17905 FGS CORE 30 05 11.38 83 02 44.36 Mayo SE 49 63








FLORIDA GEOLOGICAL SURVEY


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
99 W-18471 FGS CORE 30 28 28.00 83 15 51.00 Lee 94 172
100 -031223002 SRWMD Water Well 30 12 23.68 83 05 22.34 Mayo NE 90 245
101 -040931001 SRWMD Water Well 30 05 39.99 83 28 09.99 Fenholloway 80 62
102 -050801001 SRWMD Water Well 30 04 35.99 83 29 02.99 Fenholloway 68 393
103 -050801002 SRWMD Water Well 30 04 16.99 83 28 36.99 Fenholloway 65 434
104 -041330007 SRWMD Water Well 30 06 38.99 83 03 34.99 Mayo SE 60 57
105 -041331006 SRWMD Water Well 30 05 49.49 83 03 31.59 Mayo SE 47 87
106 -041333002 SRWMD Water Well 30 05 49.69 83 01 30.89 Mayo SE 71 225
107 -041333003 SRWMD Water Well 30 05 49.49 83 01 00.19 Mayo SE 72 210
108 -041333004 SRWMD Water Well 30 05 23.49 83 01 00.99 Mayo SE 68 240
109 -041329002 SRWMD Water Well 30 06 19.39 83 02 02.39 Mayo SE 69 70
110 -041318010 SRWMD Water Well 30 08 38.99 83 03 46.99 Mayo NE 65 90
111 -041319004 SRWMD WaterWell 30 07 44.99 83 03 41.99 Mayo NE 60 150
112 -051332004 SRWMD Water Well 30 00 36.40 83 02 15.99 Mayo SE 45 49
113 -051329001 SRWMD Water Well 30 01 10.38 83 02 39.83 Mayo SE 46 75
114 -051310001 SRWMD Water Well 30 03 27.98 83 00 27.99 Mayo SE 42 115
115 -041305003 SRWMD WaterWell 30 09 57.99 83 02 37.99 Mayo NE 90 115
116 -041309001 SRWMD WaterWell 30 08 55.99 83 01 01.99 Mayo NE 92 85
117 -041231001 SRWMD WaterWell 30 05 29.99 83 09 41.99 Mayo 50 62
118 -051317001 SRWMD Water Well 30 03 19.79 83 02 00.39 Mayo SE 42 69
119 -051306003 SRWMD Water Well 30 04 59.49 83 03 28.49 Mayo SE 45 171
120 -051307003 SRWMD Water Well 30 04 11.84 83 03 09.50 Mayo SE 43 49
121 -041222001 SRWMD Water Well 30 07 28.99 83 06 35.99 Mayo SE 60 90
122 -041136002 SRWMD WaterWell 30 05 52.99 83 10 21.99 Mayo 50 55
123 -041202003 SRWMD Water Well 30 09 52.99 83 05 06.99 Mayo NE 70 68
124 -041202004 SRWMD Water Well 30 09 53.99 83 05 45.99 Mayo NE 80 138
125 -051224002 SRWMD Water Well 30 02 12.99 83 04 42.99 Mayo SE 65 165
126 -051230002 SRWMD Water Well 30 00 46.99 83 09 09.99 Mayo 80 69
127 -041212002 SRWMD Water Well 30 09 17.99 83 04 35.99 Mayo NE 55 80
128 -041130001 SRWMD Water Well 30 06 46.99 83 15 29.99 Day SE 70 64
129 -041130002 SRWMD Water Well 30 06 10.99 83 15 28.99 Day SE 75 65
130 -041131002 SRWMD Water Well 30 05 11.80 83 15 28.08 Day SE 77 90
131 -041132004 SRWMD WaterWell 30 05 19.99 83 14 39.99 Mayo 70 165
132 -041134002 SRWMD Water Well 30 05 27.99 83 12 37.99 Mayo 58 60
133 -041129004 SRWMD WaterWell 30 06 15.99 83 14 42.99 Mayo 64 50
134 -041123003 SRWMD WaterWell 30 06 59.99 83 11 25.99 Mayo 55 48
135 -041124005 SRWMD WaterWell 30 07 25.99 83 10 07.99 Mayo 55 68
136 -041128001 SRWMD WaterWell 30 06 14.99 83 13 24.99 Mayo 51 185
137 -041128002 SRWMD Water Well 30 06 44.99 83 13 52.99 Mayo 48 38
138 -041119006 SRWMD Water Well 30 07 32.98 83 14 56.14 Dowling Park 67 70
139 -051215002 SRWMD Water Well 30 02 37.99 83 06 14.99 Mayo SE 60 180
140 -051204001 SRWMD Water Well 30 04 40.99 83 07 15.99 Mayo SE 52 83
141 -051205001 SRWMD Water Well 30 04 43.60 83 07 54.75 Mayo 74 86
142 -051206002 SRWMD Water Well 30 04 50.99 83 09 12.99 Mayo 60 83
143 -041120004 SRWMD WaterWell 30 07 20.99 83 14 16.99 Mayo 50 58
144 -041110002 SRWMD Water Well 30 09 11.99 83 12 18.99 Dowling Park 68 68
145 -041113001 SRWMD Water Well 30 07 58.99 83 10 50.99 Dowling Park 55 115
146 -051116002 SRWMD WaterWell 30 03 18.99 83 13 37.99 Mayo 78 84
147 -051124001 SRWMD WaterWell 30 02 26.99 83 10 37.99 Mayo 80 55
148 -051202006 SRWMD Water Well 30 04 50.99 83 05 37.99 Mayo SE 50 75








OPEN FILE REPORT NO. 91


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
149 -051115010 SRWMD Water Well 30 02 48.99 83 12 17.99 Mayo 80 57
150 -041034003 SRWMD Water Well 30 05 07.99 83 18 14.99 Day SE 85 110
151 -041036002 SRWMD Water Well 30 05 07.99 83 16 55.99 Day SE 80 66
152 -041036003 SRWMD Water Well 30 05 18.99 83 15 58.99 Day SE 80 192
153 -041107002 SRWMD Water Well 30 09 15.99 83 15 19.99 Day 70 160
154 -041025004 SRWMD Water Well 30 06 02.99 83 16 10.99 Day SE 73 120
155 -051112001 SRWMD Water Well 30 03 41.99 83 10 23.99 Mayo 74 170
156 -051113008 SRWMD Water Well 30 02 39.99 83 09 54.99 Mayo 75 40
157 -051114001 SRWMD Water Well 30 03 05.99 83 11 09.99 Mayo 76 60
158 -051101002 SRWMD Water Well 30 04 54.99 83 09 55.99 Mayo 55 100
159 -051101007 SRWMD Water Well 30 04 41.99 83 11 00.99 Mayo 70 175
160 -041016003 SRWMD Water Well 30 08 10.99 83 19 50.99 Day 87 165
161 -041023007 SRWMD Water Well 30 07 28.99 83 18 02.99 Day SE 80 95
162 -041023008 SRWMD Water Well 30 07 17.99 83 17 39.99 Day SE 80 95
163 -041013002 SRWMD Water Well 30 07 49.99 83 16 14.99 Day 80 102
164 -041013005 SRWMD Water Well 30 08 21.99 83 16 27.99 Day 76 123
165 -051106005 SRWMD Water Well 30 04 47.99 83 15 32.99 Day SE 80 191
166 -051001001 SRWMD Water Well 30 04 54.99 83 16 27.99 Day SE 80 98
167 -050906001 SRWMD Water Well 30 04 19.99 83 27 59.99 Fenholloway 71 379
168 -021329008 SRWMD Water Well 30 16 56.99 83 01 53.00 Live Oak West 90 147
169 -031317003 SRWMD Water Well 30 13 52.99 83 02 37.99 Mayo NE 90 125
170 -031319004 SRWMD Water Well 30 12 35.99 83 03 07.99 Mayo NE 88 100
171 -031304004 SRWMD Water Well 30 15 30.99 83 01 01.00 Live Oak West 100 161
172 -021333005 SRWMD Water Well 30 15 59.09 83 01 41.50 Live Oak West 101 86
173 -021327006 SRWMD Water Well 30 16 55.19 83 00 32.70 Live Oak West 95 89
174 -031219001 SRWMD Water Well 30 12 58.99 83 08 53.99 Dowling Park 86 78
175 -031221001 SRWMD Water Well 30 12 17.99 83 07 11.99 Mayo NE 80 105
176 -011329003 SRWMD Water Well 30 22 21.99 83 02 28.00 Live Oak West 100 130
177 -011331004 SRWMD Water Well 30 21 41.99 83 02 52.00 Live Oak West 100 115
178 -031226007 SRWMD Water Well 30 11 18.99 83 05 01.99 Mayo NE 75 180
179 -031205005 SRWMD Water Well 30 15 34.99 83 07 00.00 Falmouth 90 240
180 -011331007 SRWMD Water Well 30 21 21.99 83 03 50.00 Live Oak West 100 120
181 -011333002 SRWMD Water Well 30 21 20.99 83 00 50.00 Live Oak West 148 147
182 -011315001 SRWMD Water Well 30 23 39.19 83 00 40.10 Fort Union 135 205
183 -031129004 SRWMD Water Well 30 11 27.99 83 14 04.99 Dowling Park 60 75
184 -031135003 SRWMD Water Well 30 10 30.99 83 10 59.99 Dowling Park 75 82
185 -031136001 SRWMD Water Well 30 11 14.38 83 10 13.94 Dowling Park 80 78
186 -031203002 SRWMD Water Well 30 15 11.99 83 06 08.00 Live Oak West 90 96
187 -031118005 SRWMD Water Well 30 13 15.99 83 15 32.99 Day 70 132
188 -021321008 SRWMD Water Well 30 17 26.09 83 01 34.00 Live Oak West 99 90
189 -021320007 SRWMD Water Well 30 18 06.99 83 02 17.00 Live Oak West 91 76
190 -021315006 SRWMD Water Well 30 18 41.99 83 00 43.00 Live Oak West 95 120
191 -011233008 SRWMD WaterWell 30 20 53.99 83 07 40.00 Falmouth 85 112
192 -011213001 SRWMD Water Well 30 23 33.59 83 03 56.95 Fort Union 108 100
193 -011225001 SRWMD Water Well 30 21 57.99 83 03 55.00 Live Oak West 100 102
194 -031111001 SRWMD WaterWell 30 14 22.41 83 11 52.07 Dowling Park 85 84
195 -031113001 SRWMD WaterWell 30 13 12.99 83 10 38.99 Dowling Park 87 80
196 -031114001 SRWMD WaterWell 30 13 13.63 83 11 08.17 Dowling Park 80 87
197 -021317001 SRWMD Water Well 30 18 34.99 83 01 58.00 Live Oak West 102 108
198 -011226002 SRWMD Water Well 30 21 47.99 83 05 19.00 Live Oak West 100 155








FLORIDA GEOLOGICAL SURVEY


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
199 -011230002 SRWMD Water Well 30 21 46.99 83 08 58.00 Falmouth 79 140
200 -011209001 SRWMD Water Well 30 25 12.99 83 06 58.00 Fort Union 89 80
201 -011211002 SRWMD Water Well 30 24 48.99 83 05 17.00 Fort Union 150 160
202 -011203001 SRWMD Water Well 30 25 55.99 83 06 53.00 Fort Union 49 80
203 -031036001 SRWMD Water Well 30 10 26.99 83 16 05.99 Day 80 90
204 -031101001 SRWMD WaterWell 30 15 14.99 83 10 02.00 Falmouth 89 160
205 -021305003 SRWMD Water Well 30 20 43.99 83 02 15.00 Live Oak West 101 160
206 -021308001 SRWMD Water Well 30 19 34.99 83 02 25.00 Live Oak West 100 95
207 -021235002 SRWMD Water Well 30 15 40.99 83 05 16.00 Live Oak West 89 104
208 -021231001 SRWMD Water Well 30 16 30.12 83 09 12.47 Falmouth 86 80
209 -011125001 SRWMD WaterWell 30 22 02.99 83 10 34.00 Falmouth 72 50
210 -011104003 SRWMD Water Well 30 26 05.99 83 13 55.00 Ellaville 80 75
211 -031026004 SRWMD WaterWell 30 11 41.99 83 17 26.99 Day 86 60
212 -031024008 SRWMD Water Well 30 12 55.99 83 16 51.99 Day 80 220
213 -021213001 SRWMD Water Well 30 18 36.99 83 04 43.00 Live Oak West 100 136
214 -021215001 SRWMD Water Well 30 18 48.39 83 06 18.17 Live Oak West 90 87
215 -021217001 SRWMD Water Well 30 18 38.99 83 08 49.00 Falmouth 83 75
216 -021220004 SRWMD Water Well 30 17 36.99 83 08 11.00 Falmouth 85 210
217 -021222001 SRWMD Water Well 30 17 45.86 83 06 05.28 Live Oak West 81 191
218 -021135001 SRWMD WaterWell 30 16 03.99 83 11 13.00 Falmouth 80 225
219 -011034001 SRWMD Water Well 30 21 19.99 83 18 11.00 Madison SE 85 85
220 -011035001 SRWMD Water Well 30 20 59.19 83 17 11.40 Madison SE 88 78
221 -011036001 SRWMD Water Well 30 21 03.99 83 16 24.00 Madison SE 92 65
222 -011013001 SRWMD Water Well 30 23 56.99 83 16 29.00 Lee 95 80
223 -021202004 SRWMD Water Well 30 20 34.99 83 05 17.00 Live Oak West 90 100
224 -021204001 SRWMD Water Well 30 20 47.99 83 07 04.00 Live Oak West 81 255
225 -021133001 SRWMD Water Well 30 15 48.99 83 13 27.00 Falmouth 73 84
226 -021127001 SRWMD WaterWell 30 16 47.99 83 12 51.00 Falmouth 68 80
227 -011015002 SRWMD Water Well 30 23 52.99 83 18 34.00 Lee 90 82
228 -011016001 SRWMD Water Well 30 23 57.99 83 19 18.00 Lee 93 85
229 -021122001 SRWMD WaterWell 30 17 31.99 83 12 07.00 Falmouth 70 75
230 -021125001 SRWMD WaterWell 30 16 36.99 83 10 25.00 Falmouth 80 170
231 -021002002 SRWMD Water Well 30 20 23.99 83 18 01.00 Madison SE 92 63
232 -021005002 SRWMD Water Well 30 20 49.99 83 20 05.00 Madison SE 95 65
233 -021008003 SRWMD Water Well 30 19 39.99 83 20 11.99 Madison SE 95 90
234 -011010004 SRWMD Water Well 30 24 38.99 83 18 30.00 Lee 90 75
235 -011004001 SRWMD WaterWell 30 25 22.99 83 19 45.00 Lee 98 110
236 -011004006 SRWMD Water Well 30 25 51.99 83 19 32.00 Lee 101 95
237 -011005001 SRWMD Water Well 30 26 05.99 83 20 52.00 Lee 100 145
238 -011005002 SRWMD Water Well 30 25 58.99 83 20 13.00 Lee 95 126
239 -011001001 SRWMD Water Well 30 25 37.99 83 16 58.00 Lee 93 78
240 -011002002 SRWMD Water Well 30 25 23.99 83 17 20.00 Lee 97 92
241 -011002004 SRWMD Water Well 30 25 58.99 83 17 18.00 Lee 102 85
242 -010907001 SRWMD Water Well 30 24 52.99 83 28 01.99 Madison 145 140
243 -031035002 SRWMD Water Well 30 10 23.99 83 17 57.99 Day 82 80
244 -031035004 SRWMD Water Well 30 10 52.99 83 17 33.99 Day 85 80
245 -031205007 SRWMD Water Well 30 14 58.99 83 08 39.00 Dowling Park 95 120
246 -031211002 SRWMD WaterWell 30 14 31.99 83 05 11.89 Mayo NE 85 84
247 -031219004 SRWMD Water Well 30 12 48.99 83 07 29.99 Mayo NE 85 138
248 -031303007 SRWMD Water Well 30 15 42.99 83 00 17.00 Live Oak West 100 127








OPEN FILE REPORT NO. 91


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
249 -031330002 SRWMD Water Well 30 11 49.99 83 03 40.99 Mayo NE 83 152
250 -041025005 SRWMD Water Well 30 06 05.99 83 16 36.99 Day SE 80 105
251 -041201003 SRWMD Water Well 30 09 32.99 83 03 51.99 Mayo NE 80 120
252 +011017001 SRWMD Water Well 30 28 55.99 83 20 20.00 Lee 100 200
253 -041209003 SRWMD Water Well 30 08 50.99 83 07 41.99 Dowling Park 60 77
254 -041210001 SRWMD Water Well 30 09 00.99 83 06 16.99 Mayo NE 66 66
255 -041226003 SRWMD Water Well 30 06 49.99 83 05 04.99 Mayo SE 50 100
256 -010911005 SRWMD WaterWell 30 24 48.99 83 23 24.00 Madison 100 112
257 -031318003 SRWMD Water Well 30 13 01.78 83 03 32.45 Mayo NE 87 140
258 -031318002 SRWMD WaterWell 30 13 15.91 83 03 19.99 Mayo NE 87 140
259 +011329001 SRWMD WaterWell 30 27 37.99 83 02 34.00 Fort Union 87 190
260 -051108001 SRWMD Water Well 30 03 49.99 83 13 56.99 Mayo 80 140
261 -051203003 SRWMD Water Well 30 05 02.99 83 06 07.99 Mayo SE 45 140
262 -051208001 SRWMD Water Well 30 04 05.59 83 08 16.70 Mayo 69 71
263 +011308001 SRWMD WaterWell 30 29 51.99 83 02 15.00 Fort Union 70 146
264 +011316001 SRWMD WaterWell 30 29 00.19 83 01 48.70 Fort Union 100 167
265 +011316002 SRWMD WaterWell 30 28 47.99 83 01 19.00 Fort Union 89 229
266 +011234001 SRWMD WaterWell 30 26 41.99 83 06 52.00 Fort Union 71 71
267 +011216001 SRWMD Water Well 30 29 24.99 83 07 37.00 Ellaville 110 110
268 +011226001 SRWMD WaterWell 30 27 10.99 83 05 50.00 Fort Union 60 46
269 +011211005 SRWMD WaterWell 30 29 55.99 83 05 33.00 Fort Union 110 130
270 +011208002 SRWMD Water Well 30 29 50.99 83 08 18.00 Ellaville 114 165
271 +011119001 SRWMD WaterWell 30 28 03.99 83 15 24.00 Lee 105 120
272 +011121002 SRWMD Water Well 30 27 56.47 83 13 56.92 Ellaville 73 76
273 +011117004 SRWMD Water Well 30 29 29.30 83 14 44.79 Ellaville 70 92
274 +011028003 SRWMD WaterWell 30 27 11.82 83 19 56.11 Lee 122 120
275 +011030001 SRWMD WaterWell 30 27 37.99 83 21 33.00 Lee 110 165
276 +011034001 SRWMD Water Well 30 26 38.99 83 18 55.00 Lee 100 105
277 +011035002 SRWMD Water Well 30 26 55.99 83 17 27.00 Lee 90 214
278 +011035003 SRWMD WaterWell 30 26 31.99 83 17 11.00 Lee 100 85
279 +011109001 SRWMD Water Well 30 29 44.91 83 13 49.68 Ellaville 82 65
280 +011021006 SRWMD Water Well 30 28 07.99 83 19 16.00 Lee 120 177
281 -011223004 SRWMD WaterWell 30 22 53.99 83 05 43.00 Fort Union 100 120
282 -011327002 SRWMD WaterWell 30 22 35.99 83 0 30.00 Fort Union 150 200
283 -021101002 SRWMD Water Well 30 20 47.99 83 10 48.00 Falmouth 77 82
284 -021113002 SRWMD WaterWell 30 18 50.99 83 10 30.00 Falmouth 73 164
285 -021201001 SRWMD Water Well 30 20 02.99 83 04 38.00 Live Oak West 100 175
286 -021229003 SRWMD Water Well 30 16 52.99 83 08 07.00 Falmouth 90 235
287 -021232002 SRWMD Water Well 30 15 56.99 83 08 04.00 Falmouth 90 120
288 -021310006 SRWMD Water Well 30 19 34.99 83 00 07.00 Live Oak West 110 146
289 +010813001 SRWMD WaterWell 30 28 48.99 83 28 12.99 Madison 105 115
290 +010813002 SRWMD WaterWell 30 29 23.99 83 28 13.99 Madison 110 135
291 -011011020 SRWMD WaterWell 30 24 34.99 83 17 31.00 Lee 90 98
292 -011321003 SRWMD Water Well 30 23 12.99 83 01 46.00 Fort Union 120 160
293 +011129002 SRWMD Water Well 30 27 12.99 83 14 28.00 Ellaville 90 170
294 -041315007 SRWMD WaterWell 30 08 14.33 83 00 17.52 Mayo NE 92 77
295 -041131006 SRWMD Water Well 30 05 33.99 83 15 39.99 Day SE 75 95
296 -011118007 SRWMD Water Well 30 24 21.99 83 15 46.00 Lee 90 145
297 -011214003 SRWMD WaterWell 30 23 54.99 83 05 42.00 Fort Union 100 95
298 +011218001 SRWMD Water Well 30 29 16.99 83 09 18.00 Ellaville 80 125








FLORIDA GEOLOGICAL SURVEY


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
299 -051333009 SRWMD Water Well 30 00 09.47 83 01 04.89 Mayo SE 46 50
300 -051333010 SRWMD Water Well 30 00 32.83 83 01 12.78 Mayo SE 38 38
301 -051328002 SRWMD Water Well 30 01 29.72 83 01 26.42 Mayo SE 31 170
302 +010918003 SRWMD Water Well 30 29 14.99 83 27 50.99 Madison 160 135
303 +010922005 SRWMD Water Well 30 28 38.99 83 24 23.00 Madison 150 165
304 -021223003 SRWMD Water Well 30 17 34.99 83 05 15.00 Live Oak West 90 160
305 -041317001 SRWMD Water Well 30 08 17.42 83 02 42.15 Mayo NE 77 63
306 +011117014 SRWMD Water Well 30 28 56.83 83 13 58.24 Ellaville 72 38
307 +011120008 SRWMD Water Well 30 28 35.37 83 14 10.19 Ellaville 69 30
308 +011030002 SRWMD Water Well 30 27 32.89 83 21 08.86 Lee 130 122
309 +011118005 SRWMD WaterWell 30 29 19.36 83 15 43.24 Lee 108 115
310 +011130003 SRWMD Water Well 30 27 02.61 83 15 42.78 Lee 98 110
311 -011022006 SRWMD Water Well 30 23 08.99 83 18 29.00 Lee 80 125
312 -021321012 SRWMD Water Well 30 18 09.99 83 01 38.00 Live Oak West 100 130
313 -041222005 SRWMD Water Well 30 07 07.99 83 06 01.99 Mayo SE 50 170
314 -010924001 SRWMD Water Well 30 23 27.99 83 22 59.99 Madison 98 100
315 -051330007 SRWMD Water Well 30 01 33.99 83 03 15.99 Mayo SE 50 75
316 -041129008 SRWMD WaterWell 30 06 38.99 83 14 40.99 Mayo 65 245
317 -041132008 SRWMD WaterWell 30 05 46.99 83 14 47.99 Mayo 70 120
318 -051001005 SRWMD Water Well 30 04 53.99 83 16 00.99 Day SE 80 173
319 -051111016 SRWMD WaterWell 30 04 04.99 83 11 09.99 Mayo 75 145
320 -051207011 SRWMD Water Well 30 04 05.99 83 08 57.99 Mayo 65 130
321 -051214015 SRWMD Water Well 30 03 03.99 83 05 36.99 Mayo SE 60 75
322 -051215004 SRWMD Water Well 30 03 17.99 83 06 01.99 Mayo SE 45 220
323 -051225006 SRWMD Water Well 30 00 57.99 83 04 13.99 Mayo SE 65 225
324 +010915005 SRWMD Water Well 30 29 10.99 83 24 10.00 Madison 140 163
325 +011019005 SRWMD WaterWell 30 28 11.99 83 21 16.00 Lee 100 98
326 +010933010 SRWMD Water Well 30 26 37.99 83 25 40.99 Madison 130 130
327 -011001002 SRWMD Water Well 30 25 57.99 83 23 24.00 Madison 100 132
328 -011115001 SRWMD Water Well 30 23 48.99 83 12 22.00 Ellaville 80 170
329 -011120001 SRWMD Water Well 30 22 48.99 83 14 19.00 Ellaville 80 178
330 -041025008 SRWMD Water Well 30 06 26.99 83 16 17.99 Day SE 80 110
331 -041119010 SRWMD Water Well 30 07 32.26 83 15 41.09 Day 75 270
332 -051207010 SRWMD Water Well 30 03 34.99 83 09 01.59 Mayo 75 200
333 -021307003 SRWMD Water Well 30 19 44.99 83 03 48.00 Live Oak West 90 129
334 -031110001 SRWMD Water Well 30 14 04.99 83 12 31.99 Dowling Park 85 195
335 -031223003 SRWMD WaterWell 30 12 45.14 83 05 47.30 Mayo NE 90 270
336 -031332004 SRWMD WaterWell 30 10 31.99 83 02 42.99 Mayo NE 90 130
337 -011012012 SRWMD Water Well 30 24 25.99 83 16 20.00 Lee 80 95
338 -021309005 SRWMD Water Well 30 19 43.99 83 01 03.00 Live Oak West 100 220
339 -031320002 SRWMD Water Well 30 12 22.99 83 02 32.99 Mayo NE 105 170
340 -031330004 SRWMD Water Well 30 11 43.99 83 03 02.99 Mayo NE 85 220
341 -031330005 SRWMD Water Well 30 11 47.99 83 23 02.99 Day NW 85 165
342 -041305004 SRWMD Water Well 30 10 04.99 83 01 55.99 Mayo NE 90 190
343 +010812001 SRWMD WaterWell 30 29 53.99 83 28 52.99 Madison 110 165
344 -041206001 SRWMD Water Well 30 09 56.99 83 09 36.99 Dowling Park 72 200
345 -041206002 SRWMD Water Well 30 09 54.99 83 09 09.99 Dowling Park 74 92
346 -041114004 SRWMD Water Well 30 08 26.99 83 10 56.99 Dowling Park 70 200
347 -031217002 SRWMD Water Well 30 13 49.99 83 08 03.99 Dowling Park 95 142
348 -051322003 SRWMD Water Well 30 02 31.44 83 00 36.35 Mayo SE 50 51








OPEN FILE REPORT NO. 91


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
349 -051322002 SRWMD Water Well 30 02 10.80 83 00 10.38 Mayo SE 52 46
350 -051201007 SRWMD Water Well 30 05 06.66 83 04 30.90 Mayo SE 39 40
351 -011309002 SRWMD WaterWell 30 25 09.19 83 01 01.20 FortUnion 90 145
352 -051103003 SRWMD Water Well 30 04 56.69 83 12 54.39 Mayo 60 170
353 -051123003 SRWMD WaterWell 30 01 57.99 83 10 54.99 Mayo 80 130
354 -051235004 SRWMD Water Well 30 00 42.99 83 04 45.99 Mayo SE 70 50
355 -011106002 SRWMD WaterWell 30 25 34.99 83 15 52.00 Lee 90 220
356 -011001003 SRWMD Water Well 30 25 28.99 83 16 29.00 Lee 90 220
357 -011001004 SRWMD Water Well 30 25 56.99 83 16 21.00 Lee 90 220
358 -041111006 SRWMD WaterWell 30 09 04.45 83 11 35.20 Dowling Park 74 66
359 -021210004 SRWMD Water Well 30 20 01.43 83 06 52.59 Live Oak West 78 59
360 -021214003 SRWMD Water Well 30 18 56.51 83 05 40.38 Live Oak West 88 74
361 -051210016 SRWMD Water Well 30 04 17.61 83 06 22.58 Mayo SE 57 51
362 -031224004 SRWMD Water Well 30 12 36.30 83 04 29.80 Mayo NE 92 160
363 +011024002 SRWMD Water Well 30 28 06.99 83 16 45.00 Lee 90 200
364 +011024003 SRWMD WaterWell 30 28 33.99 83 16 44.00 Lee 110 220
365 -011116003 SRWMD Water Well 30 23 43.99 83 13 43.00 Ellaville 80 195
366 -011319002 SRWMD WaterWell 30 22 56.99 83 03 06.00 FortUnion 90 115
367 -021124002 SRWMD Water Well 30 17 54.99 83 10 47.00 Falmouth 80 170
368 -051109008 SRWMD WaterWell 30 03 51.46 83 12 57.53 Mayo 79 60
369 +011126002 SRWMD Water Well 30 27 36.99 83 11 12.00 Ellaville 80 295
370 -011121002 SRWMD Water Well 30 22 51.99 83 13 13.00 Ellaville 80 395
371 -011119001 SRWMD WaterWell 30 22 34.99 83 15 22.00 Lee 90 95
372 -011121001 SRWMD Water Well 30 22 51.99 83 13 44.00 Ellaville 80 245
373 -011129002 SRWMD WaterWell 30 21 59.99 83 14 49.00 Falmouth 80 228
374 -031026008 SRWMD WaterWell 30 11 15.99 83 17 24.99 Day 80 90
375 +011135002 SRWMD Water Well 30 26 19.99 83 11 13.00 Ellaville 70 120
376 +011135003 SRWMD Water Well 30 26 52.99 83 11 07.00 Ellaville 70 220
377 +010917002 SRWMD WaterWell 30 29 11.99 83 26 12.00 Madison 120 132
378 -011035006 SRWMD Water Well 30 21 44.99 83 18 02.00 Madison SE 90 95
379 +011113005 SRWMD Water Well 30 29 24.99 83 10 28.00 Ellaville 110 150
380 +011226005 SRWMD WaterWell 30 27 10.99 83 04 57.00 Fort Union 70 132
381 -011328003 SRWMD Water Well 30 22 39.99 83 01 16.00 Fort Union 130 195
382 -021124001 SRWMD WaterWell 30 18 01.99 83 10 23.00 Falmouth 80 270
383 -041322003 SRWMD Water Well 30 07 09.99 83 00 44.99 Mayo SE 80 175
384 -041327001 SRWMD Water Well 30 06 49.99 83 00 29.99 Mayo SE 85 225
385 -051309003 SRWMD Water Well 30 04 12.99 83 00 52.99 Mayo SE 55 140
386 +011126001 SRWMD Water Well 30 27 12.99 83 11 42.00 Ellaville 80 120
387 -011120002 SRWMD WaterWell 30 22 25.99 83 14 44.00 Falmouth 80 520
388 -021220005 SRWMD Water Well 30 18 01.99 83 08 44.00 Falmouth 90 152
389 -021228004 SRWMD Water Well 30 16 35.99 83 07 01.00 Live Oak West 90 172
390 +011010002 SRWMD WaterWell 30 29 48.99 83 18 42.00 Lee 100 180
391 -041118007 SRWMD Water Well 30 08 28.99 83 15 50.99 Day 75 145
392 -011116005 SRWMD Water Well 30 23 43.99 83 13 13.00 Ellaville 80 148
393 -011116006 SRWMD Water Well 30 24 02.99 83 13 26.00 Ellaville 80 190
394 -011121003 SRWMD Water Well 30 23 17.99 83 13 13.00 Ellaville 80 245
395 -031136003 SRWMD Water Well 30 10 25.99 83 10 10.99 Dowling Park 75 92
396 -031217001 SRWMD Water Well 30 13 21.99 83 08 25.99 Dowling Park 95 195
397 -031219005 SRWMD Water Well 30 12 39.99 83 09 29.99 Dowling Park 80 120
398 +011216007 SRWMD WaterWell 30 29 11.99 83 06 55.00 FortUnion 90 145







FLORIDA GEOLOGICAL SURVEY


Total
Map *Archived Data Data LATITUDE LONGITUDE 1:24,000 Elev. Depth
ID# ID# Source Type DD MM SS DD MM SS Quadrangle (Feet) (epet
(Feet)
399 +011013004 SRWMD Water Well 30 29 25.99 83 16 29.00 Lee 120 180
400 -051211006 SRWMD Water Well 30 03 59.99 83 05 30.99 Mayo SE 45 135
401 -041133005 SRWMD Water Well 30 05 39.99 83 13 15.99 Mayo 60 130
402 -051216013 SRWMD Water Well 30 02 58.99 83 07 18.99 Mayo SE 70 295
403 -021010001 SRWMD Water Well 30 19 14.99 83 18 32.00 Madison SE 90 200
404 -021015004 SRWMD Water Well 30 18 38.99 83 18 32.00 Madison SE 90 245

*NOTE: Suwannee River Water Management District (SRWMD) Archived ID # is the well's
township, range, and section location. The format is as follows: + or indicates township north
(+) versus south (-); there is no need to include an east / west indicator for the range, as the entire
SRWMD is east of the Prime Meridian. Following the +/- are 6 digits representing the township,
range, and section (TTRRSS), and finally a 3 digit unique identifier assigned consecutively to
each well within a given section to differentiate wells with the same +/- and 6 digit number.

For example: -031224004 means Township 03 South, Range 12 East, Section 24, unique well
004.

PAGE 1

STATE OF FLORIDA DEPARTMENT OF ENVIRO NMENTAL PROTECTION Michael W. Sole, Secretary FLORIDA GEOLOGICAL SURVEY Walter Schmidt, State Geologist and Director OPEN-FILE REPORT 91 TEXT TO ACCOMPANY GEOLOGIC MA P OF THE EASTERN PORTION OF THE U.S.G.S. PERRY 30 x 60 MINUTE QUADRANGLE, NORTHERN FLORIDA (OPEN-FILE MAP SERIES 98) By Richard C. Green, P.G. #1776, David T. Paul, and Thomas M. Scott, P.G. 2007 ISSN (1058-1391) This geologic map was funded in part by the USGS National Cooperative Geologic Mapping Program

PAGE 2

OPEN FILE REPORT NO. 91 i Table of Contents Abstract....................................................................................................................... ..................................1 Introduction................................................................................................................... ................................1 Methods........................................................................................................................ ............................3 Previous Work.................................................................................................................. ........................3 Geologic Summary............................................................................................................... ........................4 Structure...................................................................................................................... .............................4 Geomorphology.................................................................................................................. ......................7 Geomorphic Districts........................................................................................................... .................7 Ocala Karst District........................................................................................................... ................7 Alachua Karst Hills............................................................................................................ .........9 Branford Karst Plain........................................................................................................... ..........9 Perry Karst/San Pedro Bay...................................................................................................... ....9 Okefenokee Basin District...................................................................................................... ........10 Northern Okefenokee Basin...................................................................................................... ..10 Tifton Upland District......................................................................................................... ............11 Madison Hills.................................................................................................................. ...........11 Lithostratigraphic Units....................................................................................................... ....................11 Tertiary System................................................................................................................ ...................11 Eocene Series.................................................................................................................. ................11 Middle Eocene.................................................................................................................. ..........11 Eocene Series.................................................................................................................. ................12 Upper Eocene................................................................................................................... ..........12 Oligocene Series............................................................................................................... .............13 Lower Oligocene................................................................................................................ .......13 Miocene Series................................................................................................................. ..............13 Lower Miocene.................................................................................................................. ........14 Middle Miocene................................................................................................................. ........14 Tertiary-Quaternary Systems.................................................................................................... ...........14 Pliocene Series................................................................................................................ ...............14 Pleistocen e Series............................................................................................................. .............15 Hydrogeology................................................................................................................... ..........................15 Derivative Products............................................................................................................ .........................15 Selected Bibliography.......................................................................................................... .......................16 List of Figures Figure 1: Areas mapped unde r FGS STATEMAP Program.........................................................................2 Figure 2: Location of selected river basins , springs, swallets, and other water bodies.................................5 Figure 3: Principal subsurface structures of north Florida (modified from Puri and Vernon, 1964 and Schmidt, 1984)................................................................................................................. .............................6 Figure 4: Terraces in Florida. (after Healy, 1975)............................................................................. ...........8 List of Tables Table 1: Wells utilized for study.............................................................................................. ...................24

PAGE 3

OPEN FILE REPORT NO. 91 1 Abstract The accompanying 1:100,000 scale geologic map (Open-File Map Series 98) shows the areal distribution of bedrock and su rficial geologic units for the eas tern half of the Perry, Florida 30 x 60 minute quadrangle. The map was construc ted using a combination of field mapping at 1:24,000 scale, compilation of data from existing maps (various scales), core and cuttings analyses and descriptions, and analyses of va rious Geographic Information System (GIS) data sources. The resulting data was compiled in ESR I’s ArcGIS ArcMap 9.1 for publication as part of the Florida Geological Survey Open-File Map Se ries (O.F.M.S.). Map units in the area range in age from the Eocene Ocala Limestone to undi fferentiated Quaternary sediments. Important resources in the area include groundwater, sp rings, sand, limestone, an d dolostone. Numerous springs, sinking streams (swallet s), and other karst features are present in the study area. Understanding of geologic units, karst, springs and their interactions within the map area aids land planners, environmental professionals, and citizens in making land-use decisions such as designing new construction projects, siting new wate r supply wells, locating sources of mineable resources for aggregate supply, and pr otection of springs and water quality. Keywords : Florida, geologic map, environmental geology, geomorphology, springs, swallets, Floridan aquifer system. Introduction This report is designed to accompany Open-F ile Map Series (O.F.M.S.) 98. O.F.M.S. 9801 depicts the near-surface geology of the eastern half of the Perry 30 x 60 minute quadrangle. O.F.M.S. 98-02 depicts six geologic cross sections, as well as a correlative stratigraphic chart for the lithologic units for the study area. O.F. M.S. 98-03 shows a geomorphology map, a digital elevation model (DEM), locations of known spri ngs, sinkholes and swallets , and photographs of selected outcrops w ithin the study area. The study area lies east of Perry and west of Live Oak, Florida and includes portions of Hamilton, Lafayette, Madison, Suwannee, and Taylor Counties (Figure 1). It lies west of the Lake City 30 x 60 minute quadrangle, part of wh ich was mapped under a grant from the U.S.G.S. STATEMAP program (Green et al. 2006). A regi onally important river, the Suwannee River, bisects the map area, and much of the area serves as recharge to the Floridan aquifer system, the primary source of drinking water in the region. An objective for this report is to provi de basic geologic information for the accompanying geologic map (O.F.M.S. 98-01) , cross sections (O.F.M.S. 98-02) and geomorphology (O.F.M.S. 98-03). Information provi ded by this report and these maps is intended for a diverse audience comprising pr ofessionals in geology, hydrology, engineering, environmental and urban planning, and laypersons, all of whom have varying levels of geologic knowledge. The map can help users identify and interpret geologic f eatures which impact activities related to groundwater quality and quantity, location of mineral resources, land-use planning, and designing construction projects. Applied uses of the map and data in this report include: 1) identifying potential new mineral resources, 2) ch aracterizing aquifer recharge potential and confinement, 3) aiding in wa ter-management decisions on groundwater flow and

PAGE 4

FLORIDA GEOLOGICAL SURVEY 2 usage, 4) providing information on aquifer vulne rability to potential pollution, 5) ecosystem, wetlands, and environmental characte rization, and 6) recreational uses. Figure 1: Areas mapped under FGS STATEMAP Program.

PAGE 5

OPEN FILE REPORT NO. 91 3 Methods The study consisted of 1) re viewing and compiling existing ge ologic literature and data, 2) mapping geologic units in the field at 1:24,000 scale using sta ndard techniques, 3) core and cuttings analyses of existing samples, 4) ne w core drilling, 5) collecting and describing of outcrop samples, and 6) preparing a geologic map, geological cross-sections, and geomorphic map of the area. Field work was performed dur ing the spring and summer of 2007 and consisted of sampling and describing numerous outcrops, river and pit exposures. Seventy-eight new samples of geologic material we re added to the FGS surface-samp le archives (M-Series), four new cores were drilled, and numerous additional out crops were examined during this project. All data, including data from over 400 wells, were compiled and analyzed by the authors and the map and accompanying plates were developed in ESRI’s ArcGIS ArcMap 9.1 for publication as part of the Florida Geological Survey Open-File Map Series. The study area is blanketed by a veneer of Quaternary sediments and soils. For this reason, and in keeping with geologic mapping pr actices developed by Scott et al. (2001), the authors have adopted the policy of mapping the fi rst named geologic unit within 20 feet (6.1 meters) of the surface. If undifferentiated Quaterna ry (Qu) sediments attain a thickness greater than 20 feet (6.1 meters), then they appear as the mapped unit. If these undifferentiated sediments are less than 20 feet (6.1 meters) th ick, then the underlying st ratigraphic unit appears on the map. The region is generally vegetated and pub lic access is hindered by the presence of numerous farms and private land-owners. Fieldw ork access was typically lim ited to public roads, State-owned lands, and Suwannee River Water Management District-owned lands. Previous Work The current study builds on many previous geologic investigations in and around the present map area. A statewide geologic map (Scott, et al., 2001) was published by the FGS in digital format and provided much of the base-m ap material. Preliminary county geologic maps have been published for Hamilton (Scott, 1 993), Lafayette (Campbell, 1993c), Madison (Campbell, 1993a), Suwannee (Rupert et al. 1 993), and Taylor (Campbell, 1993b) Counties at scales of 1:126,720. It is important to point out, however, that each of these Open-File Map Series geologic maps were constructed in an av erage time-frame of two w eeks utilizing selected in-house geologic data with li ttle to no extra field work. Although these maps provided an excellent starting point for the detailed geologic mapping undertaken for th is project, significant refinement of the geologic maps was possible as a re sult of this project. Th is study also benefited from the work performed for geologic mapping in the western portion of the Lake City 30 x 60 minute quadrangle (Green et al . 2006). Many of the field re lationships and stratigraphic problems were worked out during that project and data gathered du ring the project proved invaluable in the completion of this endeavor.

PAGE 6

FLORIDA GEOLOGICAL SURVEY 4 Geologic Summary The near surface geology of the eastern por tion of the U.S.G.S. 1:100,000 scale Perry quadrangle is composed of a complex mixture of Eocene to Holocene carbonate and siliciclastic sediments. A combination of factors, includi ng fluvio-deltaic deposit ion, marine deposition, dissolution of underlying carbonates, erosion of sediments as a resu lt of eustatic changes in sea level, and structural features, have influenced the geology of the study area. Much of the eastern portion of the Perry quadrangle is located within the Suwannee, Alapaha, Withlacoochee, and Econfina River basins (Figure 2). In this area, the Suwannee River and its tributaries contain numerous documente d springs, including six first magnitude springs and 53 lesser magnitude springs. A first magnit ude spring is defined as having a minimum average flow of 100 cubic feet per second, or 6 4.6 million gallons per day. Many of these springs have evidenced significant increases in pollutant s in the last few decades, particularly nitrate (Scott, et al. 2002). Detailed geologic mapping of lithostratigraphic units in this area provides critical data needed to help in future assessmen ts of the vulnerability of the aquifer systems and these springs to contamination. The recharge ar eas for many of these springs are believed to be located in and around the curren t study area. Understanding the surficial geology of the map area is a key factor in developing management a nd protection plans, not only for the springs, but for the unconfined portions of the Floridan aquifer system (FAS). Structure Several structural variables ha ve affected the geology of th e region. The Peninsular Arch, (Figure 3) a structurally high area which affected deposition from the Cretaceous to the early Cenozoic, is the dominant subsurface feature in the Florida peninsula (Applin, 1951; Puri and Vernon, 1964; Williams et al. 1977; Schmid t, 1984; Miller, 1986; Scott, 1997). The axis of the Peninsular Arch extends from southeastern Georgia to the vicinity of Lake Okeechobee in southern Florid a in a general northwest to s outheast trend. The crest of the arch passes beneath Alachua County south and east of the study area and is highest in Union and Baker Counties east of the study area. The arch was a topogra phic high during most of the Cretaceous Period and had Upper Cretaceous sedi ments deposited over it (Applin, 1951). It formed a relatively stable base for Eocene carbonate deposition except during times of periodic land emergence due to lowered sea levels (Will iams et al. 1977). The arch did not affect Neogene to Holocene sediment depositi on (Williams et al. 1977; Scott, 1997). The Ocala Platform is the most promin ent structure affecting the near surface depositional and post-depositional environments with in the map area. Hopkins (1920) originally named this feature the Ocala Uplif t. Vernon (1951) described the Ocala Uplift as a gentle flexure developed in Tertiary sediments with a northwes t-southeast trending crest. Because there is continuing uncertainty about the origin of this feature, Scott (1988) used the term Ocala Platform, rather than Ocala Uplift or Ocala Arch , since it does not have a structural connotation. The Ocala Platform exerted its influence on Neogene sedi ment deposition, and Miocene sediments of the Hawthorn Group are thought to have been deposited across the platform (Scott, 1981a; Scott, 1988). Post-Miocene erosion, however, has remove d sediments of the Hawthorn

PAGE 7

OPEN FILE REPORT NO. 91 5 Group from much of the crest of the Ocala Platform, exposing Eocene carbonates (Cooke, 1945; Espenshade and Spencer, 1963; Brooks, 1966; and Scott, 1981b). Figure 2: Location of selected river basins, springs, swa llets, and other water bodies.

PAGE 8

FLORIDA GEOLOGICAL SURVEY 6 Figure 3: Principal subsurface structures of nor th Florida (modified from Puri and Vernon, 1964 and Schmidt, 1984). This is evident in the southern portion of the map area. Undifferentiated sediments have subsequently been deposited on the exposed Oli gocene and Eocene carbonate s. These consist of residual clays, sands, and aeolian sands deposited during the Pliocene to Holocene (Scott, 1997).

PAGE 9

OPEN FILE REPORT NO. 91 7 Vernon (1951), utilizing aeria l photographs, first mapped fr acture patterns throughout northern peninsular Fl orida. Regionally, these fractures generally trend parallel to the axis of the Ocala Platform in a northwest-sout heast orientation. A secondary sy stem of fractur es intersects these primary fractures at high angles in a no rtheast-southwest trend (Vernon, 1951). Orientation of stream meanders along the Suwannee River s uggests that these fractu re patterns may be a controlling factor in stre am location (Colton, 1978). Several relict Neogene coastal terraces, whic h developed as a result of fluctuating sea levels, have been documented in the study area. H ealy (1975) recognized three marine terraces within the study area (Figure 4): the Wicomico terrace at elevations of 70 to 100 feet (21.3 to 30.5 meters) above mean sea level (MSL), the Sunderland/Okefenokee terrace at elevations between 100 and 170 feet (30.5 and 51.8 meters) above MSL, a nd the Coharie terrace at elevations between 170 and 215 feet (51.8 and 70.5 meters). The elevations between 150 and 170 feet (45.7 and 51.8 meters) above MSL were refe rred to as the Okefenokee Terrace by MacNeil (1950) and Alt and Brooks (1965). Detailed discussions and corr elations of these marine terraces and relict shorelines have been attempted by many authors, including Matson and Sanford (1913), Cooke (1931, 1939), Flint (1940, 1971), MacN eil (1950), Alt and Brooks (1965), Pirkle et al. (1970), and Healy (1975). Geomorphology Geomorphic Districts According to Scott (2005), the study area co ntains part of three geomorphic provinces – the Ocala Karst District, the Okefenokee Basin District, and the Tifton Upland District (see Figure 2, O.F.M.S. 98-03). Within the map area, these districts have b een further subdivided topographically into five regi onal physiographic units: the Alac hua Karst Hills, the Perry Karst/San Pedro Bay, and the Branford Karst Pl ain (Ocala Karst District), the Northern Okefenokee Basin (Okefenokee Basin District), and the Madison Hills (Tifton Upland District) (see Figure 3, O.F.M.S. 98-03). Ocala Karst District The majority of the current study area is lo cated within White’s (1970) Gulf Coastal Lowlands. Scott (2005) refers to this area as th e Ocala Karst District. Within Florida, the Ocala Karst District encompasses a broad area from Waku lla County in the panhandle of Florida, south to Hillsborough and Pinellas Counties in the west -central peninsula and inland to nearly the center of the peninsula. Elevations within the dist rict range from sea leve l along the coast to in excess of 300 feet (91.4 meters) above MSL on the Brooksville Ridge (O.F.M.S. 98-03, Figure 3). Within the study area, elevations range from 45 feet (13.7 meters) in the sout hwestern corner of the study area to 170 feet (56.0 meters) along the east ern edge of the map area (O.F.M.S. 98-03, Figure 1). Carbonate sediments, ranging from the Mi ddle Eocene Avon Park Formation to the Lower Oligocene Suwannee Limestone, lie at or ne ar the land surface within this district. The Ocala Karst District is domina ted by dissolution sinkhol es and shallow bowl-shaped depressions, producing a rolling topography. Generally, a variab ly permeable siliciclastic cover allows downward percolating groundwater to slowly dissolve the underl ying limestone, leading to cover-collapse sinkholes and c over-subsidence features. Cover-c ollapse sinkholes form rather

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FLORIDA GEOLOGICAL SURVEY 8 abruptly from the structural failure of an underl ying cavern roof. An excelle nt example of this is Devil’s Mill Hopper, located in Alachua County s outheast of the present study area (Evans, et al. 2004). Cover subsidence features generally occur in areas where overlying siliciclastics are thicker and sediments sag as ca rbonates dissolve underneath. Typical ly, areas such as these have only a few shallow sinks formed by the downwar d movement of the siliciclastic overburden filling voids created by slow dissolution of underl ying carbonates. Springs, sinking and resurgent streams, and caverns commonly occur within the Ocala Karst District. Figure 4: Terraces in Fl orida (after Healy, 1975).

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OPEN FILE REPORT NO. 91 9 Alachua Karst Hills The Alachua Karst Hills, presen t along the eastern edge of the study area, are part of White’s (1970) Northern Highlands. This physiographic unit is well drained and formed in response to karstification of uplands c overed by Hawthorn Group and undifferentiated sediments. The karst hills are part of an eros ional scarp retreat being formed as the Hawthorn Group and younger sediments are eroded and karstified. This scarp is part of the extensive Cody Scarp of Puri and Vernon (1964). Regionally, the Alachua Karst Hills extend from northern Suwannee County to central Alachua County (O.F.M.S. 98-03, Figure 3). Elevati ons range from approximately 100 feet (30.5 meters) to in excess of 200 feet (61 meters) ab ove MSL. In the study area, the Alachua Karst Hills are only present within central Suwannee County along the eastern boundary of the mapped area, where elevations range fr om approximately 70 feet (21.3 me ters) to 170 feet (51.8 meters) above MSL (O.F.M.S. 98-03, Figure 3). Branford Karst Plain The Branford Karst Plain, which covers much of the eastern two-thirds of the map area, occupies the Suwannee River va lley, the Alapaha River valley, and the Withlacoochee River valley (O.F.M.S. 98-03, Figure 3). Regionally, the plain extends s outh to the Santa Fe River on the Gilchrist County line (Scott, 200 5). Elevations in the karst plai n range from less than 15 feet (4.6 meters) above MSL along the Suwannee River to more than 140 feet (42.7 meters) above MSL. Within the study area, el evations of the Branford Kars t Plain range from 20 feet (6.1 meters) along the Suwannee River valley in the s outheastern corner of the map area to 140 feet (42.7 meters) above MSL in the northeastern por tion of the map area (O.F.M.S. 98-03, Figure 1). The Lower Oligocene Suwannee Limestone occurs in the northern half of the Branford Karst Plain and crops out within the Withlacoochee and Alapaha River valleys and the northern portion of the Suwannee River valley within the map area, while the Upper Eocene Ocala Limestone is near the surface in the southern part of the Branford Karst Plain. Silicified “float” boulders (remnants of the Lowe r Oligocene Suwannee Limestone and the Upper Eocene Ocala Limestone) are common in the southeastern quadrant of the map area. Drainage within the Branford Karst Plain is primarily through karst features with relatively few surface streams. Closed topographi c depressions (CTDs; Arthur et al. 2007) are numerous throughout the ka rst plain, particularly east of the Suwannee River (O.F.M.S. 98-03, Figure 1). Perry Karst/San Pedro Bay Regionally, the Perry Karst/San Pedro Bay complex extends from Madison County southward to the Gulf of Mexico in Dixie Count y (O.F.M.S. 98-03, Figure 3). The Perry Karst is the transition zone between the W oodville Karst Plain to the west and Sa n Pedro Bay. Elevations within this area range from less than 5 feet (1.5 meters) to in excess of 100 fe et (30.5 meters) above MSL. The elevations in San Pe dro Bay are generally higher than in the Perry Karst area or the Branford Karst Plain. Elevations decline to the south toward the Gulf coast. The Perry Karst area is poorly to moderately drained while San Pedro Bay is extremely poor ly drained. Copeland (2005) provides an excellent discussion of the San Pedr o Bay, its origin and su rrounding areas. The Perry

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FLORIDA GEOLOGICAL SURVEY 10 Karst/San Pedro Bay complex occupies much of th e western and southwestern parts of the study area. Within the map area, elevations of the Perry Karst/San Pedro Bay range from 45 feet (13.7 meters) to over 100 feet (30.5 meters) above MSL (O.F.M.S. 98-03, Figure 1). The Suwannee Limestone un derlies much of the Perry Karst/San Pedro Bay, although it is absent under the central-southern and southeastern portions of the unit. In the San Pedro Bay, a clay layer up to five feet (1.5 mete rs) thick overlies the limestone, providing confinement to the FAS (Copeland, 1982). Plio-Pleistocene sediments cover th e entire area, and the unit is poorly to very poorly drained. Recharge to the FAS is low to moderate, while recharge to the FAS may be moderate to high along the transition between the Perry Karst/San Pedro Bay and the Branford Karst Plain (Copeland, 2005). Okefenokee Basin District The Okefenokee Basin Di strict is recognized based on topography, drainage characteristics and the general lack of karst featur es. East of the presen t study area, the Lake City Ridge subdivides the district into northern and southern basins (S cott, 2005). In the northern Okefenokee Basin, the hills are essentially absent and the entire area is poorly drained and flat. Hills are common and the area is better drained in the Southern Okefenok ee Basin. The basin extends into Florida from Georgia and is recognized from Baker, Hamilton , and Columbia Counties on the north, southwards to northern Alachua County (O.F.M.S 98-03, Fi gure 3). Where the Okef enokee Basin District makes the transition to the Ocala Karst District , the land becomes well dr ained and has more relief. Miocene Hawthorn Group (Th) sediments to P lio-Pleistocene siliciclastics underlie the district. The Statenville Formation of the Hawthorn Group (Ths) occurs at or near the surface in the western portion of the district, wh ile Undifferentiated Pl io-Pleistocene silicicl astics (TQu) underlie the eastern portion of the district. Northern Okefenokee Basin The Northern Okefenokee Basin lies to the nort h of the Lake City Ridge, the Alachua Karst Hills and the Branford Karst Plain and east of the Madison Hills (O.F.M.S. 98-03, Figure 3). Northeast of the study area, the Okefenokee Swamp occu pies much of the nor thern portion of the Okefenokee Basin District from Geor gia into Florida. The northern po rtion of the basin is very flat with few hills. Hills become more common towards the western and ea stern boundaries of the area. Plio-Pleistocene siliciclastic s underlie much of the north ern Okefenokee Basin but are poorly drained due to the near-surface presence of the Hawthorn Group clayey sediments and low relief. The Statenville Fo rmation of the Hawthorn Group (Ths) is at or near the surface in the western part of the basin. Karst features, which ar e uncommon throughout mo st of the basin, occur primarily in the transition zone with the Ocala Kars t District where the Hawthorn Group is thin and breached by sinkholes. Elevations vary within the ba sin from approximately 100 feet (30.5 meters) to more than 190 feet (57.9 meters) above MS L (Scott, 2005). Wher e the Suwannee River occurs within the district east of the study area, el evations along the river may be le ss than 50 feet (15.2 meters). Within the map area, elevations range from 60 f eet (18.3 meters) near the Suwannee River to 160 feet (48.8 meters) on some of the hilltops.

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OPEN FILE REPORT NO. 91 11 Tifton Upland District In northern Florida, the Tifton Upland Distri ct (Scott, 2005) encompasses the area referred to as the Tallahassee Hills by White (1970). The uplands ex tend from the Apalachicola River eastward to central Hamilton County at the Alapah a River (O.F.M.S. 98-03, Figure 2). The Tifton Upland District's topography is characterized by broad, undulating hills with a well developed dendritic drainage pattern. The Tifton Upland District is present in the northwestern and northern portion of the map area. Elevations in the district , which range from 35 feet (10.7 meters) above MSL in the major stream and river valleys and in the swamps of the eas tern portion of the district up to 300 feet (91.4 meters) MSL on the hilltops, decrease toward the southern limit of the district. Madison Hills Within the study area, Scott (2005) delineat ed one physiographic unit within the Tifton Upland District: the Madi son Hills. Regionally, the Madison Hills extend from the eastern end of the Tallahassee Hills in central Je fferson County, eastward to easte rn Madison Coun ty on the west side of the Withlacoochee River (O.F.M.S. 98-03, Figure 3). The elevation of the Madison H ills ranges from 70 feet (21.3 meters ) in the valleys between the Withlacoochee and Alapaha rivers to near 200 feet (61 meters) ab ove MSL on some hill tops. The Madison Hills are present in the northwe stern portion of the ma p area, while a small area (separated from the main body of this zone by th e Withlacoochee River Va lley) is present in Hamilton County. Elevations within the map area for the Madison Hills range from 70 feet (21.3 meters) above MSL to 200 feet (61 meters ) above MSL on some hilltops (O.F.M.S. 9803, Figure 1). The valleys within the Madi son Hills are broad and poorly drained. The Miccosukee Formation (Tmc) forms the higher areas while the Hawthorn Grou p sediments underlie the lower portions of the landscape. Kars t features occur in the eastern part of the district where the Suwannee Limestone lies n ear the land surface. Lithostratigraphic Units Tertiary System Eocene Series Middle Eocene The Middle Eocene Avon Park Formation (Tap), first described by Applin and Applin (1944), is the oldest unit investigated in the present study area . The unit, which only occurs in the subsurface in the study area, consis ts of cream to light-brown to tan, poorly indurated to wellindurated, variably fossiliferous limestone (grainst one to wackestone, with rare mudstone). The limestones are interbedded with ta n to brown, very poorly indurated to well indurated, very fine to medium crystalline, fossiliferous (molds a nd casts), vuggy dolostones. Fossils present in the unit include molluscs, foraminifera, echinoids , algae and carbonized plant remains.

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FLORIDA GEOLOGICAL SURVEY 12 The Avon Park Formation was only encountered in a few wells in the study area. The top of the Avon Park ranges from 307 feet (93.6 meters) below MSL in W-2548 to 164 feet (50 meters) below MSL in W-4497 (cross-section D-D’ ; OFMS 98-02). No wells utilized for crosssections penetrated the entire section of the Avon Park Form ation. The Avon Park Formation forms part of the FAS (Southeas tern Geological Society, 1986). Eocene Series Upper Eocene The Upper Eocene Ocala Limestone (To), first described by Dall and Harris (1892) is a biogenic marine limestone comprised largely of foraminifera, molluscs, echinoids and bryozoans. Based on lithologic differences it can be informally subdivided into an upper and lower unit (Scott, 1991a). This subdivision, while often appa rent in cores and quarries, is difficult to ascertain in cuttings. As a conseque nce of this, the geologic cross sections do not break out the upper and lower Ocala Limestone. The upper unit is typically a white to cream, fineto coarse-grained, poorlyto wellindurated, poorly sorted, very fossiliferous limestone (wackest one, packstone, and grainstone). Fossils commonly include large foraminifers, br yozoans, mollusks, and a rich diversity of echinoids. The lower unit is typically a white to cream, fineto medium-grained, poorlyto moderatelyindurated limestone (grainstone to packstone). The unit may be partially dolomitized. Fossils include foraminifera (such as Lepidocyclina sp., Heterostegina ocalana , and miliolids), bryozoans, algae, mollusks, echinoids, and crabs. Portions of the upper Ocala Limestone have been locally replaced by silica and upon erosion large boulders may remain as residual fl oat. The most likely s ource of silica is from weathering of the Hawthorn Group sediments (W illiams et al. 1977; Scott, 1988). There are several processes that have occurred, or ar e occurring, in the Hawthorn Group which release silica in solution and provide a source for silica in the replacement of carbonate rocks (Altshuler et al. 1963; Mitchell, 1965; and Assefa, 1969). The occurrence of this float throughout the southern portion of the study ar ea is an indication that the Hawthorn Gr oup once covered much more of the study area and has been subsequently removed by erosion and weathering (O.F.M.S. 98-01). The top of the Ocala Limestone, which is often karstified, range s from 60 feet (18.2 meters) above MSL in W-187 (cross sections B-B’ and E-E’; OFMS 98-02) to 109 feet (33.2 meters) below MSL in W-2549 (cross sections AA’, D-D', and E-E’; OFMS 98-02). Only a few wells penetrated the entire thic kness of the Ocala Limestone in the study area. In these wells, the thickness of the Ocala Limestone ranges from 1 77 feet (53.9 meters) in W-2549 (cross-sections A-A’, D-D’ and E-E’; OFMS 98-02) to 220 feet (67.1 meters) in W-2550 (cross section E-E’; OFMS 98-02). The Ocala Limestone is unconf ormably overlain by the Suwannee Limestone (Ts) throughout much of the st udy area and by undifferentiated Quat ernary sediments (Qu) in the southern and southeastern porti ons of the study area. The Ocal a Limestone forms part of the Floridan aquifer system (South eastern Geological Society, 1986).

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OPEN FILE REPORT NO. 91 13 Oligocene Series Lower Oligocene The Lower Oligocene Suwannee Limestone (T s), named by Cooke and Mansfield (1936) for exposures of limestone along the Suwann ee River from White Sp rings to Ellaville, unconformably overlies the Ocala Limestone thr oughout most of the study area. The Suwannee Limestone is primarily a white to cream, poorly to well indurated pack stone to grainstone comprised of miliolid tests, foraminifera, pe lecypods, gastropods and echinoids. The echinoid Rhyncholampas gouldii , an index fossil for the Suwannee Limestone, is commonly seen in outcrops along the Suwannee River. The lithology is variably recrystallized and may range from poorly indurated, friable limestone to well i ndurated limestone cemented by calcite spar. Silicified residual boulders of the Suwannee Li mestone (“float”) are commonly found in the south-central to southeastern po rtion of the study area, indicati ng that it once covered much of the southern portion of the map area (O.F.M.S. 98-01). The top of the Suwannee Limestone ranges fr om 5 feet (1.5 meters) above MSL in W12516 (cross section A-A’; OFMS 98-02) to 1 12 feet (34.1 meters) above MSL in W-15888 (cross section D-D’; OFMS 98-02). The Su wannee Limestone ranges in thickness from approximately 5 feet (1.5 meters) in W18768 (cross section B-B’; OFMS 98-02) to approximately 160 feet (48.8 meters) in W18767 (cross section A-A’; OFMS 98-02). The unit is unconformably overlain by sediment s of the Miocene Statenville Formation (Ths; Hawthorn Group) in the northeastern portion of the map area, sediments of the Miocene Torreya Formation (Tht; Hawthorn Group) in th e northwestern portion of the study area, and undifferentiated Quaternary se diments (Qu) throughout the re mainder of the study area. Evidence from cuttings and field data indicate s that isolated remnants of the Suwannee Limestone may occur throughout the southeaste rn portion of the map area (see W-358 and W13471 on cross section E-E’; OFMS 98-02). The Suwannee Limestone forms part of the Floridan aquifer system (Southeastern Geological Society, 1986). Miocene Series Hawthorn Group (Th) sediments are encounter ed throughout much of the northern onethird of the study area, where they unconforma bly overlie the Suwannee Limestone (O.F.M.S. 98-01). Sediments of the Hawthor n Group are thought to have been deposited onto the platform throughout the area, but Post-Miocene erosion rem oved sediments from the crest of the Ocala Platform exposing the Eocene carbonates in th e southern portion of the map area (Cooke, 1945; Espenshade and Spencer, 1963; Brooks, 1966; and Scott, 1981b). Fossils in the Hawthorn Group are sparse but may include vertebrate remains, co rals, and mollusks. Williams et al. (1977) report that the most commonly found fossils are oysters and coral heads. Silicified coral heads were observed in the Suwannee, Withlacoochee, and Al apaha Rivers during field work. Within the map area, the Miocene Hawthorn Group (Th) is composed of the Lower Miocene Torreya Formation (Tht) and the Middle Miocene Statenvill e Formation (Ths). The Torreya Formation is present west of the Withlacooche e River, while the Statenville Formation (Ths) occurs east of the Withlacoochee River (O.F.M.S. 98-01).

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FLORIDA GEOLOGICAL SURVEY 14 Lower Miocene The Lower Miocene Torreya Formation of the Hawthorn Group (Tht) is typically a siliciclastic unit with increasing amounts of carbonate in th e lower portion of the unit. The majority of the outcrops of the Torreya Formati on expose the siliciclastic part of the unit which varies from white to light olive gray unconsolidat ed to poorly indurated slightly clayey sands to light gray to bluish gray, poorly consolidated s ilty clay often containing a variable but minor component of carbonate (calcareous or dolomitic). Phosphate grains, while a common but minor lithologic component of the unit ar e often absent (Scott, 1988). The carbonate sediments of the Torreya Forma tion are white to light olive gray, poorly indurated, variably sandy and clayey limestone s. The limestone (mudstone and wackestone) often contains molds and casts of mollusks. The Torreya Formation overlies the Floridan aquifer system and forms part of the intermediate aqui fer system/intermediate confining unit (IAS/ICU) (Southeastern Geological Society, 1986). The top of the Torreya Formation ranges fr om 84 feet (25.6 meters) above MSL in W2549 (cross sections A-A’, D-D’, and E-E’; OFMS 98-02) to 144 feet (43.9 meters) above MSL in W-15888 (cross section D-D’; OFMS 98-02). In wells utilized for cross sections, the unit ranges from 10 feet (3 meters) thick in W-704 (cross section E-E’ ; OFMS 98-02) to 80 feet (24.4 meters) thick in W-12516 (cro ss section A-A’; OFMS 98-02). Middle Miocene The Middle Miocene Statenville Formation of the Hawthorn Group (Ths) occurs within limited areas of the northeastern portion of the map area along th e northeastern flank of the Ocala Platform (Scott, 2001b). The Statenville Fo rmation consists of poorly to moderately indurated, interbedded quartz sa nds, clays and dolostones. P hosphate grains are common to abundant in the unit. The unit is lithologically variable and beds may pinch out and interfinger both laterally and vertically. Outcrops of the Statenville Formation in the study area are characteristically thin-bedded a nd often cross-bedded, generally c onsisting of thinly interbedded layers of dolostone and clay alternating with be ds of sand. The Statenville Formation forms part of the IAS/ICU (Southeastern Geological Society, 1986). The top of the Statenville Formation range s from 60 feet (18.3 meters) above MSL along parts of the Suwannee River to 160 feet (48.8 meters ) above MSL in hills north of Live Oak (cross section F-F’; OFMS 98-03) . The Statenville Formation ra nges up to 100 feet (30.5 meters) in thickness in the northeaste rn portion of the map area (cross section F-F’; OFMS 98-03). Tertiary-Quaternary Systems Pliocene Series The Pliocene Miccosukee Form ation (Tmc), named by Hendry and Yon (1967), is a prodeltaic siliciclastic unit composed of gray ish-orange to grayish-red, mottled, poorlyto moderately indurated, interbedded clay, sand and gravel of variable co arseness and admixtures. The unit has limited distribution in the eastern panhandle of Florida and occurs from central Gadsden County (west of the study area) to eas tern Madison County (Scott et al. 2001).

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OPEN FILE REPORT NO. 91 15 The top of the unit, present within a limited area in the northwestern corner of the map area, ranges from approximately 100 feet (30.5 meters) above MSL to approximately 200 feet (61 meters) above MSL (cross sections A-A’, D-D’ and E-E’; OFMS 98-02). The Miccosukee Formation ranges from a few feet to approximate ly 100 feet (30.5 meters) in thickness in this area. The unit is relatively impermeable due to its hi gh clay content, but is considered to be part of the SAS (Southeastern Geological Society, 1986). Pleistocene Series Undifferentiated Quaternary sediments (Qu) lie unconformably on either the Eocene Ocala Limestone (To), the Oligocene Suwannee Li mestone (Ts), the Miocene Torreya Formation (Tht), or the Miocene Statenv ille Formation (Ths) throughout mu ch of the study area. These sediments, which generally consist of sandy clay s and clayey sands, often include weathered and silicified boulders of the Ocala Limest one and Suwannee Limestone (“float”). The undifferentiated Quaternary sediments (Qu) are part of the surficial aquifer system (SAS; Southeastern Geological Society, 1986). Sediments mapped as Quaternary Beach Ridg es and Dunes (Qbd) exhibit discernable beach ridges and dune features. These sediments cons ist of unconsolidated light gray to tan fine to medium quartz sand with variab le percentages of organic materi al. They are only present in a small area in the extreme southeastern portion of the map area. The Quaternary Beach Ridges and Dunes (Qbd) sediments are part of the SAS. Hydrogeology The hydrogeology of the map area consists of (in ascending order) the Floridan aquifer system (FAS), the intermediate aquifer system /intermediate confining unit (IAS/ICU), and the surficial aquifer system (SAS) (Southeastern Geological Societ y, 1986). The FAS, which is the primary source of drinking water in the region, is generally comp rised of carbonate units of the Avon Park Formation, the Ocala Limestone, and the Suwannee Limestone. The sands, silts, and clays of the Hawthorn Group compri se the intermediate aquifer system/intermediate confining unit. The surficial aquifer system is comprised of the Miccosukee Formation and undifferentiated Quaternary sediments. Where siliciclastic sediments of the Hawthorn Group and Miccosukee Formation are thick, they provide confinement for the Floridan aquifer system, but where the siliciclastic sediments of the Hawthorn Group and younger units are thin or missing, karst features often occur. “Swallets” (stream-to-sink features) ar e of particular concern to geoscientists and hydrogeologists in the area. Nume rous swallets occur along the western edge of the Alachua Karst Hills and provide avenues fo r direct recharge to the FAS by surface water and runoff from agricultural and urban areas (O.F.M.S. 98-03, Figure 1). Derivative Products Several derivative products will come from this project. During the mapping project, data from several hundred wells (Table 1) were anal yzed. Formation picks, made on all available wells, will allow for the creation of a structure contour map of the top of rock in the study area, along with an isopach map of overburden for the ar ea. Several of the aut hors of this report are

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FLORIDA GEOLOGICAL SURVEY 16 working on an additional publication, which is beyond the scope of the original project, which will depict these maps. Additional derivative data that is anticipated to come from this mapping effort includes an aquifer vulnerability asse ssment map. Data derived from prior STATEMAP products has often been used to augment other FG S and FAVA projects in th e state (Arthur et al. 2007; Baker et al. 2007). Selected Bibliography Allison, D., Groszos, M., and Rupert, F. R., 1995, Top of rock in the Floridan Aquifer System in the Suwannee River Water Management District : Florida Geological Survey Open File Map Series 84, scale 1:475,000. Alt, D., and Brooks, H.K., 1965, Age of the Florid a marine terraces: Jour nal of Geology, v. 73, no. 2, p. 406-411. Altshuler, Z.S., Dwornik, E. J., and Kramer, H., 1963, Transformation of montmorillonite to kaolinite during weathering: Science, v. 141, no. 3576, p. 148-152. Applin, P., 1951, Possible future petroleum provin ces of North America Florida: American Association of Petroleum Ge ologists Bulletin, v. 35, p. 405-407. Applin, P.L., and Applin, E.R., 1944, Regional s ubsurface stratigraphy and structure of Florida and southern Georgia: American Associatio n of Petroleum Geologi sts Bulletin, v. 28, p. 16731753. Arthur, J.D., 1991, The geomorphology, geology and hydrogeology of Lafayette County, Florida: Florida Geological Surv ey Open File Report 45, 10 p. Arthur, J.D., Baker, J., Cichon, J., Wood, A., a nd Rudin, A., 2007 (in review), Florida Aquifer Vulnerability Assessment (FAVA): Contamination potential of Florida’s principal aquifer systems: Florida Geologi cal Survey Bulletin 67. Assefa, G., 1969, Mineralogy and petrology of selected rocks from the Hawthorn Formation, Marion and Alachua counties, Florida [Master’s thesis ]: Gainesville, University of Florida, 80 p. Baker, A.E., Wood, H.A.R., and Cichon, J.R., 2007, The Marion County Aquifer Vulnerability Assessment; final report submitted to Marion County Board of Co unty Commissioners in fulfillment of Marion County Project No. SS06-01, March 2007, 42 p. (unpublished). Brooks, H.K., 1966, Geological history of the Suwannee River, in Southeastern Geological Society, 12th Annual Field Conference Guidebook, p. 37-45. Campbell, K., 1993a, Geologic map of Madison C ounty, Florida: Florida Geological Survey Open File Map Series 27, scale 1: 126,720.

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OPEN FILE REPORT NO. 91 17 Campbell, K., 1993b, Geologic map of Taylor Count y, Florida: Florida Ge ological Survey Open File Map Series 29, scale 1:126, 720. Campbell, K., 1993c, Geologic map of Lafayette C ounty, Florida: Florid a Geological Survey, Open File Map Series 34, scale 1: 126,720. Ceryak, R., Knapp, M.S., and Burnson, T., 1983, The Geology and Water Resources of the Upper Suwannee River Basin, Flor ida: Florida Geological Surv ey, Report of Investigation 87, 165 p. Colquhoun, D.J., 1969, Coastal plain terraces in the Carolinas and Georgia, U.S.A.: Wright, H.E., Jr., editor, Quaternary Geology and Climat e: Volume 16 of the Proceedings of the VII Congress of the Internationa l Association for Quaternary Research, v. 16, p. 150-162. Colton, Richard C., 1978, The subsurface geology of Hamilton County Florida with emphasis on the Oligocene age Suwannee Limestone [Master’s th esis]: Tallahassee, Florida State University, 185 p., 12 plates. Cooke, C.W., 1916, The age of the Ocala Lime stone: United States Geological Survey Professional Paper 95-I, p. 107-117. Cooke, C.W., 1931, Seven coastal terraces in the southeastern United States: Washington Academy of Sciences Journal, v. 21, p. 503-513. Cooke, C.W., 1939, Scenery of Florida interprete d by a geologist: Florida Geological Survey Bulletin 17, 120 p. Cooke, C.W., 1945, Geology of Florida: Flor ida Geological Survey Bulletin 29, 342 p. Cooke, C.W., and Mansfield, W.C., 1936, Suwa nnee Limestone of Florida [Abstract]: Geological Society of Amer ica Proceedings, 1935, p. 71-72. Copeland, R.E., 1982, Identification of Groundwat er Geochemical Patterns in the Western Portion of the Suwannee River Water Management District, in Beck, B., ed., Studies of the Hydrogeology of the Southeaste rn United States: 1981: Special Publication No. 1, Georgia Southwestern College, Americus, GA., p. 19-29. Copeland, R., 2003, Florida spring classification syst em and spring glossary: Florida Geological Survey Special Publication 52, 17 p. Copeland, R., 2005, Geomorphic influence of scarps in the Suwannee River Basin: Spring Field Trip, May 7, 2005, in Southeastern Geological Society Guidebook 44, 56p. Dall, W.H., and Harris, G.D., 1892, Correlation papers, Neocene: United States Geological Survey Bulletin 84, 349 p.

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FLORIDA GEOLOGICAL SURVEY 18 Espenshade, G.H., and Spencer, C.W., 1963, Geologic features of phosphate deposits of northern peninsular Florida: United Stat es Geological Survey Bulletin 1118, 115 p. Evans, W.L., III, Green R.C., Bryan J.R., a nd Paul, D.T., 2004, Geologic map of the western portion of the U.S.G.S. 1:100,000 scale Gainesvill e Quadrangle, Northern Florida: Florida Geological Survey Open File Map Se ries No. 93, 2 plates, scale 1:100,000. Flint, R.F., 1940, Pleistocene features of the Atlantic coastal plain: American Journal of Science, v., 238, p. 757-787. Flint, R.F., 1971, Glacial and Quaternary Geolog y: New York, John Wiley and Sons, Inc., 892 p. Green, R.C., Evans, W.L., III, Paul, D.T., and Scott, T.M., 2005, Geologic map of the eastern portion of the U.S.G.S. 1:100,000 s cale Gainesville Quadrangle, Northern Florida: Florida Geological Survey Open-File Map Seri es No. 94, 2 plates, scale 1:100,000. Green, R.C., Paul, D.T., Evans, W.L., Scott, T.M., and Petrushak, S.B., 2006, Geologic map of the western portion of the USGS 1:100,000 scale Lake City quadrangle, northern Florida: Florida Geological Survey Open File Ma p Series 97, 2 plates, scale 1:100,000. Groszos, M., Ceryak, R., and Alison, D., 1992, Ca rbonate units of the intermediate aquifer system in the Suwannee River Water Management District: Florida Geological Survey Open File Report, 54, 22 p. Groszos, M., and Rupert, F.R., 1992, An isop ach map of the Hawthorn Group in the Suwannee River Water Management District: Florida Geol ogical Survey Open File Map Series 2, scale 1:250, 000. Healy, H.G., 1975, Terraces and shorelines of Florid a: Florida Geological Survey Map Series No. 71, scale: 1:2,095,200. Hendry, C.W., Jr., and Yon, J.W., Jr., 1967, St ratigraphy of Upper Miocene Miccosukee Formation, Jefferson and Leon Counties, Florida: American Association of Petroleum Geologists Bulletin, v. 51, p. 250-256. Hoenstine, R.W., and Weissinger, S., 1982, A geologic guide to the Suwannee River, Ichetucknee Springs, O'leno and Manatee Springs St ate Parks: Florida Geological Survey Leaflet 12, 28 p. Hoenstine, R.W., Spencer, S.M., and O'Carro ll, T., 1990, Geology and ground-water resources of Madison County, Florida: Florida Ge ological Survey Bulletin 61, 93 p. Hoenstine, R.W., Spencer, S.M., and Lane, E. , 1993, Mineral resources of Suwannee County, Florida: Florida Geological Su rvey Map Series 137, scale 1:126,720.

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OPEN FILE REPORT NO. 91 19 Hopkins, O.B., 1920, Drilling for oil in Florida: United States Geological Survey Press Bulletin, April, 1920. Hornsby, H.D., and Ceryak, R., 1998, Springs of the Suwannee River Basin in Florida: Live Oak, Suwannee River Water Management District, 178 p. Houston, T.B., 1965, Soil survey, Suwannee County, Fl orida: U.S. Department of Agriculture, Soil Conservation Service, ser. 1961, no. 21, 101 p. Howell, D.A., and Williams, C. A., 1990, Soil survey of Madison C ounty, Florida: U.S. Department of Agriculture, Soil Conservation Service, 160 p. Huddlestun, P.F., 1988, A revision of lithostratigraphic units of the Coastal Plain of Georgia Miocene: Georgia Geological Survey Bulletin 104, 162 p. Huddlestun, P.F., and Hunter, M.E., 1982, Stratigr aphic revision of the Torreya Formation of Florida, in Scott, T.M., and Upchurch, S.B., (eds.) Miocene of the southeastern United States, Proceedings of the symposium: Florida Geol ogical Survey Special Publication, 25, 210 p. Hunter, M.E., and Huddlestun, P.F., 1982, The bi ostratigraphy of the Torreya Formation of Florida, in Scott, T.M., and Upchurch, S.B., (eds.) Miocene of the southeastern United States, Proceedings of the symposium: Florida Geological Survey Special Publication, 25, 210 p. Knapp, M.S., 1978, Environmental geology series Valdosta Sheet: Florida Geological Survey Map Series 88, scale 1:250,000. Knapp, M.S., Copeland, R. E., Scott, T.M., Cery ak, R., Price, D., and Burnson, T., 1981, Karst hydrogeology and Miocene geology of the upper Suwannee River Basin, Hamilton County, Florida, October 23-24, 1981: Southeastern Geological Society Guidebook, 23, 36 p. Lane, E., Hoenstine, RW., and Spencer, S.M. , 1993, Mineral resources of Columbia County, Florida: Florida Geological Survey Map Series 136, scale 1:126,720. Macesich, M., and Martinez, N., 1992, Mines and quarries greater than 10 acres in size in the Suwannee River Water Management District: Florid a Geological Survey Open File Map Series 1, scale 1:250, 000. MacNeil, F.S., 1950, Pleistocene sh orelines in Florida and Georgi a: United States Geological Survey Professional Paper 221-F, p. 95-107. Matson, G.C., and Sanford, S., 1913, Geology and groundwater of Florida: United States Geological Survey Water Supply Paper 319, 445 p. Miller, J.A., 1986, Hydrogeologic fr amework of the Florida aquife r system in Florida and in parts of Georgia, Alabama, and South Caro lina: Regional Aquifer-System Analysis: united States Geological Survey Professiona l Paper 1403-B, Washington, 91p., 33 plates.

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FLORIDA GEOLOGICAL SURVEY 20 Mitchell, C.L., 1965, Petrology of selected car bonate rocks from the Hawthorn Formation, Devil’s Mill Hopper, Alachua Co unty, Florida [Master’s thesis]: Gainesville, University of Florida, 51 p. Pirkle, E.C., Jr., Yoho, W.H., and Hendry, C.W., Jr ., 1970, Ancient sea level st ands in Florida: Florida Geological Survey Bulletin 52, 61 p. Price, D., 1981, Paleokarst features in Hamilton County, Florida, in Southeastern Geological Society, Field Conference Guidebook, vol. 23, p. 30-32. Puri, H.S., 1957, Stratigraphy and zonation of th e Ocala group: Florida Geological Survey Bulletin 38, 248 p. Puri, H.S., and Vernon, R.O., 1964, Summary of th e geology of Florida and a guidebook to the classic exposures: Florida Geological Su rvey Special Publication 5, revised, 312 p. Randazzo, A.F., 1972, Petrography of the Suwannee Limestone; pa rt II: Florid a Geological Survey Bulletin, 54, 13 p. Randazzo, A.F., and Jones, D.S., eds., 1997, The Ge ology of Florida: Ga inesville, University Press of Florida, 327 p. Rupert, F., 1989, The geology of Hamilton County, Florida: Florida Geological Survey Open File Report 27, 5 p. Rupert, F.R., 1996, The geomorphology and geol ogy of Taylor County, Florida: Florida Geological Survey Open File Report 70, 7 p. Rupert, F., 2003, The geology of Suwannee County, Fl orida: Florida Geological Survey, Open File Report 86, 9 p. Rupert, F., Lloyd J., and Campbell K., 1993, Ge ologic map of Suwannee County, Florida: Florida Geological Survey, Open File Map Series 33, scale: 1:126,720. Schmidt, W., 1984, Neogene stratigraphy and geologi c history of the Apalachicola Embayment, Florida: Florida Geologi cal Survey Bulletin 58, 146p. Scott, T.M., 1981a, The paleo-exte nt of the Miocene Hawthorn Fo rmation in peninsular Florida [abs]: Florida Scientist, v. 44, Supplement 1, p.42. Scott, T.M., 1981b, The Hawthorn Formation of North Florida: Southeastern Geological Society, Field Conference Guidebook, vol. 23, p. 15-23. Scott, T.M., 1988, The lithostratigraphy of the Ha wthorn Group (Miocene) of Florida: Florida Geological Survey Bulletin 59, 148 p.

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OPEN FILE REPORT NO. 91 21 Scott, T.M., 1989, The lithostratigraphy of the se diments exposed along the Suwannee River in the vicinity of White Springs, in Southeastern Geological Soci ety, Field Conference Guidebook, v. 30, p. 6-13. Scott, T.M., 1991a, Depositional patterns of the Hawthorn Group in Florida: Geological Society of America Abstracts with Programs v. 23, p. 126. Scott, T.M., 1991b, A geological Overview: in Scott, T.M., Lloyd, J.M., and Maddox, G.L., ( eds.), 1991, Florida’s ground-water quality monito ring program, hydrogeologic framework: Florida Geological Survey Sp ecial Publication 32, 97 p. Scott, T.M., 1992, A geological overview of Florid a: Florida Geological Survey Open File Report 50, 78 p. Scott, T.M., 1993, Geologic map of Hamilton County, Florida: Florida Geological Survey, Open File Map Series 32, scale: 1:126,720. Scott, T.M., 1997, Miocene to Holocene history of Florida: in Randazzo, A.F., and Jones, D.S., eds., 1997, The Geology of Florida: Gainesvi lle, University Press of Florida, 327 p. Scott, T.M., 2001, Text to accompany the geologic map of Florida: Florida Geological Survey Open File Report 80, 29 p. Scott, T.M., 2005, Revisions to the geomorphology of Florida focusing on the eastern panhandle and north-central Florida, in Southeastern Geological Soci ety Field Trip Guidebook 44, pp. 1836. Scott, T.M., (in preparation) Geomorphic map of Florida: Florida Geological Survey, scale 1:750,000. Scott, T.M., Campbell, K.M., Rupert, F.R., Art hur, J.A., Green, R.C., Means, G.H., Missimer, T.M., Lloyd, J.M., and Duncan, J.G., 2001, Geologic ma p of Florida: Florida Geological Survey Map Series 146, scale 1:750,000. Scott, T.M., Means, G.H., Means, R.C., and Meegan R.P., 2002, First magnitude springs of Florida: Florida Geological Su rvey Open File Report 85, 138 p. Scott, T.M., Means, G.H., Meegan, R.P., Means, R.C., Upchurch, S.B., Copeland, R.E., Jones, J., Roberts, T., and Willet, A., 2004, Springs of Flor ida: Florida Geological Survey Bulletin 66, 377 p. Southeastern Geological Society (SEGS) Ad Ho c Committee on Florida Hydrostratigraphic Unit Definition, 1986, Hydrogeological un its of Florida: Florida Geological Survey Special Publication 28, 8 p.

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FLORIDA GEOLOGICAL SURVEY 22 Spencer, S.M., Rupert, F., Hoenstine R.W., an d Lane, E., 1993, Mineral resources of Hamilton County, Florida: Florida Geological Survey Map Series 135, scale 1:126,720. Spencer, S.M., Yon, J.W., Hoenstine, R.W., a nd Lane, E., 1988, Mineral resources of Madison County, Florida: Florida Geologic Surv ey Map Series 121, scale 1: 126,720. Stubbs, S.A., 1940, Solution a dominant factor in the geomorphology of peninsular Florida: Florida Academy of Sciences Proceedings, v. 5, p.148-157. Upchurch, S.B., Champion, K.M., Schnieder, J.C ., Hornsby, D., Ceryak, R., and Zwanka, W., and Suppl, 2004, Defining springshed boundaries and water-quality domains near firstmagnitude springs in north Florida: Flor ida Scientist, v. 67, issue suppl. 1, 52 p. U.S. Geological Survey, 1981, 1:100,000-scale metric topographic map of Lake City, Florida: Reston, U.S. Geological Survey. Vernon, R.O., 1951, Geology of Citrus and Levy Counties, Florida: Florida Geological Survey Bulletin 33, 256 p. Watts, F.C., Readle, E.L., Dearst yne, D.A., and Weat herspoon, R.L., 2000, Soil survey of Taylor County, Florida: U.S. Department of Agricultu re, Natural Resources Conservation Service, 311 p. Weatherspoon, R.L., Baldwin, R., Howell, D.A., 2004, Soil survey of Hamilton County, Florida: U.S. Department of Agriculture, Natu ral Resources Conservation Service, 189 p. Weatherspoon, R.L., 2006, Soil Survey of Suwa nnee County, Florida: U.S. Department of Agriculture, Natural Resources Conservation Service, 449 p. Weatherspoon, R.L., Anderson, K., Anzalone, W ., Bednarek, R., Chibirka, J., Cummings, E., Dahl, R., French, C., Jakel, D., Johnson, W. R., Neilson, R.W., and Shurtliff, D., 1998, Soil survey of Lafayette County, Florida: U.S. Departme nt of Agriculture, Soil Conservation Service, 201p. White, W.A., 1970, The geomorphology of the Florid a peninsula: Florida Geological Survey Bulletin 51, 164 p. Williams, K.E., Nicol, D., and Randazzo, A.F., 1977, The geology of the western part of Alachua County, Florida: Florida Geologica l Survey Report of Investigation 85, 97 p. Winkler, W., 1996, Surface water a nd groundwater interaction along the Cody Scarp transition region of the Suwannee River Ba sin near Live Oak, Florida, in Southeastern Geological Society, Guidebook 36, p. 1-15.

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OPEN FILE REPORT NO. 91 23 Acknowledgements The authors would like to thank: Brian Kauffman, Gwen Lord, Bob Heeke, and Carlos Herd of the Suwannee River Water Management Distri ct (SRWMD) for access to district lands; Ron Ceryak for providing well information for the SRWMD; Steven Carpenter of the Division of Forestry for access to the Twin Rivers and Holton Creek Wildlife Management Areas. The late James H. Balsillie is thanked for his invaluable contributions in the field and in discussing this project with the authors. Ken Campbell, Bri dget Coane, Adam Humphr eys, Tom Greenhalgh, Nick John, Harley Means, Sarah Ramdeen, Guy Richardson, and David Wagner provided additional field support. David Anderson provided assistance with ArcMap and GIS analyses. Rick Copeland, Jackie Lloyd, Harley Means, Fr ank Rupert, and Walt Sc hmidt are thanked for their time in reviewing, discus sing, and editing the product. Th is geologic map was funded in part by the USGS National Cooperative Geol ogic Mapping Program and in part by the FDEP/FGS.

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FLORIDA GEOLOGICAL SURVEY 24 Table 1: Wells utilized for study. Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 1 W-187 FGS CUTTINGS 30 17 21.70 83 18 45.21 Madison SE 90 129 2 W-358 FGS CUTTINGS 30 10 57.25 83 10 55.00 Dowling Park 70 57 3 W-704 FGS CUTTINGS 30 23 02.13 83 21 23.46 Lee 93 90 4 W-1066 FGS CUTTINGS 30 14 29.30 83 15 01.67 Day 50 81 5 W-1451 FGS CUTTINGS 30 18 26.55 83 00 25.72 Live Oak West 102 268 6 W-2000 FGS CUTTINGS 30 00 37.02 83 16 46.04 Day SE 78 4560 7 W-2548 FGS CUTTINGS 30 26 11.04 83 25 47.60 Madison 143 520 8 W-2549 FGS CUTTINGS 30 28 19.73 83 25 44.60 Madison 99 515 9 W-2550 FGS CUTTINGS 30 26 51.24 83 24 43.42 Madison 170 540 10 W-4497 FGS CUTTINGS 30 04 05.09 83 30 0.99 Perry 61 460 11 W-8389 FGS CUTTINGS 30 12 20.15 83 12 38.06 Dowling Park 80 330 12 W-8390 FGS CUTTINGS 30 27 26. 01 83 13 32.10 Ellaville 66 170 13 W-12247 FGS CUTTINGS 30 14 49.00 83 01 53.00 Mayo NE 96 4510 14 W-12516 FGS CUTTINGS 30 25 47.35 83 18 11.46 Lee 90 90 15 W-13122 FGS CUTTINGS 30 01 45.08 83 29 50.00 Fenholloway 57 49 16 W-13218 FGS CUTTINGS 30 30 04.46 83 04 23.56 Jennings 85 156 17 W-13471 FGS CUTTINGS 30 09 10.00 83 10 15.00 Dowling Park 77 180 18 W-13479 FGS CUTTINGS 30 25 34.06 83 23 12.00 Madison 105 100 19 W-13786 FGS CUTTINGS 30 27 16.00 83 21 35.00 Lee 110 138 20 W-15854 FGS CORE 29 59 57.23 83 03 27.15 Mallory Swamp NE 65 65 21 W-15867 FGS CORE 30 03 52.07 83 11 51.14 Mayo 72 53 22 W-15888 FGS CORE 30 23 06.10 83 26 37.89 Madison 160 89 23 W-15952 FGS CORE 30 01 29.76 83 26 02.52 Fenholloway 73 36 24 W-15980 FGS CORE 30 20 38.67 83 19 30.79 Madison SE 90 52 25 W-15983 FGS CORE 30 16 29.10 83 24 37.01 Madison SW 99 62 26 W-16510 FGS CUTTINGS 30 02 05.96 83 02 45.48 Mayo SE 42 17 27 W-16514 FGS CUTTINGS 30 03 51.51 83 07 46.91 Mayo 59 45 28 W-17904 FGS CORE 30 04 56.08 83 02 30.43 Mayo SE 46 48 29 W-18767 FGS CORE 30 26 27.00 83 03 39.00 Fort Union 93 229 30 W-18768 FGS CORE 30 17 57.10 83 14 26.90 Falmouth 62 69 31 W-18771 FGS CORE 30 16 14.28 83 28 25.08 Madison SW 101 199 32 W-18770 FGS CORE 30 08 47.31 83 27 15.57 Day NW 87 129 33 W-400 FGS CUTTINGS 30 03 10.89 83 10 47.98 Mayo 78 200 34 W-1021 FGS CUTTINGS 30 29 11.05 83 00 36.14 Fort Union 85 185 35 W-1061 FGS CUTTINGS 30 17 07.37 83 19 20.38 Madison SE 92 27 36 W-1067 FGS CUTTINGS 30 05 22.81 83 13 37.22 Mayo 65 28 37 W-1751 FGS CUTTINGS 30 28 50.85 83 25 0.56 Madison 95 325 38 W-1827 FGS CUTTINGS 30 12 03.21 83 07 44.10 Dowling Park 85 3819 39 W-1951 FGS CUTTINGS 30 10 55.00 83 09 21.00 Dowling Park 80 160 40 W-2145 FGS CUTTINGS 30 23 07. 15 83 10 36.30 Ellaville 57 45 41 W-2155 FGS CUTTINGS 30 27 45.51 83 24 00.27 Madison 181 154 42 W-2576 FGS CUTTINGS 30 28 09.31 83 23 36.20 Madison 178 175 43 W-2987 FGS CUTTINGS 30 27 06.72 83 24 40.63 Madison 129 185 44 W-3014 FGS CUTTINGS 30 05 43.00 83 14 06.00 Mayo 67 80 45 W-4460 FGS CUTTINGS 30 04 11.02 83 29 03.03 Fenholloway 63 360 46 W-4496 FGS CUTTINGS 30 04 02.82 83 29 31.59 Fenholloway 62 411 47 W-4942 FGS CUTTINGS 30 11 30.01 83 18 51.10 Day 86 175 48 W-5208 FGS CUTTINGS 30 23 33. 02 83 11 02.07 Ellaville 60 240

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OPEN FILE REPORT NO. 91 25 Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 49 W-6359 FGS CUTTINGS 30 04 45.66 83 29 52.11 Fenholloway 62 65 50 W-6534 FGS CUTTINGS 30 08 35.04 83 14 47.01 Dowling Park 68 100 51 W-6858 FGS CUTTINGS 30 09 55.85 83 14 50.67 Dowling Park 58 62 52 W-7231 FGS CUTTINGS 30 28 17.48 83 28 18.85 Madison 95 60 53 W-7232 FGS CUTTINGS 30 28 05.00 83 26 15.00 Madison 110 56 54 W-7234 FGS CUTTINGS 30 28 16.53 83 27 27.19 Madison 140 45 55 W-7641 FGS CUTTINGS 30 27 51. 47 83 12 41.09 Ellaville 85 110 56 W-7798 FGS CUTTINGS 30 21 57.15 83 09 34.23 Falmouth 80 370 57 W-7800 FGS CUTTINGS 30 22 07.05 83 09 36.07 Falmouth 70 220 58 W-8078 FGS CUTTINGS 30 28 21.70 83 24 57.06 Madison 190 420 59 W-10300 FGS CUTTINGS 30 28 10. 00 83 11 44.00 Ellaville 90 80 60 W-10654 FGS CORE 30 23 53.48 83 10 36.43 Ellaville 57 70 61 W-10655 FGS CORE 30 24 06.01 83 11 52.34 Ellaville 60 42 62 W-10656 FGS CORE 30 25 08.89 83 11 04.21 Ellaville 68 62 63 W-10657 FGS CORE 30 23 01.00 83 10 20.00 Ellaville 65 72 64 W-11753 FGS CUTTINGS 30 15 02.99 83 14 31.08 Falmouth 55 139 65 W-12608 FGS CUTTINGS 30 24 24. 00 83 13 52.00 Ellaville 84 120 66 W-12960 FGS CUTTINGS 30 08 14.07 83 19 03.98 Day 86 120 67 W-13024 FGS CUTTINGS 30 22 19.15 83 22 43.07 Madison SW 97 145 68 W-13029 FGS CUTTINGS 30 16 41.04 83 03 04.04 Live Oak West 90 70 69 W-13200 FGS CUTTINGS 30 16 58.40 83 13 23.79 Falmouth 55 24 70 W-13201 FGS CUTTINGS 30 06 26.63 83 16 54.13 Day SE 82 30 71 W-13205 FGS CUTTINGS 30 12 45.10 83 15 45.00 Day 66 27 72 W-13305 FGS CUTTINGS 30 21 18.41 83 07 56.98 Falmouth 75 32 73 W-13366 FGS CUTTINGS 30 22 08.00 83 16 30.00 Madison SE 84 165 74 W-13376 FGS CUTTINGS 30 14 45.07 83 04 27.00 Mayo NE 88 100 75 W-13946 FGS CUTTINGS 30 29 45.91 83 22 26.15 Lee 149 160 76 W-13998 FGS CUTTINGS 30 20 30.00 83 18 34.00 Madison SE 88 35 77 W-14051 FGS CUTTINGS 30 28 10.00 83 26 50.00 Madison 150 165 78 W-14856 FGS CUTTINGS 30 22 12.00 83 28 35.00 Madison SW 110 90 79 W-14866 FGS CUTTINGS 30 06 12.00 83 26 0.00 Fenholloway 80 34 80 W-15803 FGS CORE 30 26 49.00 83 24 07.00 Madison 161 100 81 W-15853 FGS CORE 30 06 20.22 83 26 50.82 Fenholloway 80 98 82 W-15936 FGS CORE 30 28 48.99 83 14 44.36 Ellaville 60 75 83 W-15950 FGS CORE 30 01 08.36 83 25 33.37 Fenholloway 73 28 84 W-15953 FGS CORE 30 04 23.37 83 19 08.24 Day SE 87 42 85 W-15974 FGS CORE 30 20 49.17 83 29 34.40 Madison SW 103 93 86 W-15981 FGS CORE 30 22 18.23 83 13 58.95 Falmouth 71 62 87 W-15982 FGS CORE 30 22 13.90 83 21 44.01 Madison SE 95 45 88 W-15984 FGS CORE 30 24 49.41 83 17 51.41 Lee 80 57 89 W-16508 FGS CUTTINGS 30 05 26.13 83 09 15.66 Mayo 53 25 90 W-16509 FGS CUTTINGS 30 04 42.84 83 06 01.50 Mayo SE 49 15 91 W-16512 FGS CUTTINGS 30 02 33.57 83 05 43.75 Mayo SE 63 25 92 W-16513 FGS CUTTINGS 30 02 33.28 83 06 44.54 Mayo SE 72 98 93 W-16515 FGS CUTTINGS 30 02 49.44 83 04 52.06 Mayo SE 51 20 94 W-16517 FGS CUTTINGS 30 17 50.32 83 01 18.02 Live Oak West 103 18 95 W-16518 FGS CUTTINGS 30 17 26.74 83 00 25.94 Live Oak West 93 75 96 W-16753 FGS CORE 30 25 06.04 83 17 54.01 Lee 92 80 97 W-17902 FGS CORE 30 04 46.53 83 02 45.81 Mayo SE 46 63 98 W-17905 FGS CORE 30 05 11.38 83 02 44.36 Mayo SE 49 63

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FLORIDA GEOLOGICAL SURVEY 26Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 99 W-18471 FGS CORE 30 28 28.00 83 15 51.00 Lee 94 172 100 -031223002 SRWMD Water Well 30 12 23.68 83 05 22.34 Mayo NE 90 245 101 -040931001 SRWMD Water Well 30 05 39.99 83 28 09.99 Fenholloway 80 62 102 -050801001 SRWMD Water Well 30 04 35.99 83 29 02.99 Fenholloway 68 393 103 -050801002 SRWMD Water Well 30 04 16.99 83 28 36.99 Fenholloway 65 434 104 -041330007 SRWMD Water Well 30 06 38.99 83 03 34.99 Mayo SE 60 57 105 -041331006 SRWMD Water Well 30 05 49.49 83 03 31.59 Mayo SE 47 87 106 -041333002 SRWMD Water Well 30 05 49.69 83 01 30.89 Mayo SE 71 225 107 -041333003 SRWMD Water Well 30 05 49.49 83 01 00.19 Mayo SE 72 210 108 -041333004 SRWMD Water Well 30 05 23.49 83 01 00.99 Mayo SE 68 240 109 -041329002 SRWMD Water Well 30 06 19.39 83 02 02.39 Mayo SE 69 70 110 -041318010 SRWMD Water Well 30 08 38.99 83 03 46.99 Mayo NE 65 90 111 -041319004 SRWMD Water Well 30 07 44.99 83 03 41.99 Mayo NE 60 150 112 -051332004 SRWMD Water Well 30 00 36.40 83 02 15.99 Mayo SE 45 49 113 -051329001 SRWMD Water Well 30 01 10.38 83 02 39.83 Mayo SE 46 75 114 -051310001 SRWMD Water Well 30 03 27.98 83 00 27.99 Mayo SE 42 115 115 -041305003 SRWMD Water Well 30 09 57.99 83 02 37.99 Mayo NE 90 115 116 -041309001 SRWMD Water Well 30 08 55.99 83 01 01.99 Mayo NE 92 85 117 -041231001 SRWMD Water Well 30 05 29.99 83 09 41.99 Mayo 50 62 118 -051317001 SRWMD Water Well 30 03 19.79 83 02 00.39 Mayo SE 42 69 119 -051306003 SRWMD Water Well 30 04 59.49 83 03 28.49 Mayo SE 45 171 120 -051307003 SRWMD Water Well 30 04 11.84 83 03 09.50 Mayo SE 43 49 121 -041222001 SRWMD Water Well 30 07 28.99 83 06 35.99 Mayo SE 60 90 122 -041136002 SRWMD Water Well 30 05 52.99 83 10 21.99 Mayo 50 55 123 -041202003 SRWMD Water Well 30 09 52.99 83 05 06.99 Mayo NE 70 68 124 -041202004 SRWMD Water Well 30 09 53.99 83 05 45.99 Mayo NE 80 138 125 -051224002 SRWMD Water Well 30 02 12.99 83 04 42.99 Mayo SE 65 165 126 -051230002 SRWMD Water Well 30 00 46.99 83 09 09.99 Mayo 80 69 127 -041212002 SRWMD Water Well 30 09 17.99 83 04 35.99 Mayo NE 55 80 128 -041130001 SRWMD Water Well 30 06 46.99 83 15 29.99 Day SE 70 64 129 -041130002 SRWMD Water Well 30 06 10.99 83 15 28.99 Day SE 75 65 130 -041131002 SRWMD Water Well 30 05 11.80 83 15 28.08 Day SE 77 90 131 -041132004 SRWMD Water Well 30 05 19.99 83 14 39.99 Mayo 70 165 132 -041134002 SRWMD Water Well 30 05 27.99 83 12 37.99 Mayo 58 60 133 -041129004 SRWMD Water Well 30 06 15.99 83 14 42.99 Mayo 64 50 134 -041123003 SRWMD Water Well 30 06 59.99 83 11 25.99 Mayo 55 48 135 -041124005 SRWMD Water Well 30 07 25.99 83 10 07.99 Mayo 55 68 136 -041128001 SRWMD Water Well 30 06 14.99 83 13 24.99 Mayo 51 185 137 -041128002 SRWMD Water Well 30 06 44.99 83 13 52.99 Mayo 48 38 138 -041119006 SRWMD Water Well 30 07 32.98 83 14 56.14 Dowling Park 67 70 139 -051215002 SRWMD Water Well 30 02 37.99 83 06 14.99 Mayo SE 60 180 140 -051204001 SRWMD Water Well 30 04 40.99 83 07 15.99 Mayo SE 52 83 141 -051205001 SRWMD Water Well 30 04 43.60 83 07 54.75 Mayo 74 86 142 -051206002 SRWMD Water Well 30 04 50.99 83 09 12.99 Mayo 60 83 143 -041120004 SRWMD Water Well 30 07 20.99 83 14 16.99 Mayo 50 58 144 -041110002 SRWMD Water Well 30 09 11.99 83 12 18.99 Dowling Park 68 68 145 -041113001 SRWMD Water Well 30 07 58.99 83 10 50.99 Dowling Park 55 115 146 -051116002 SRWMD Water Well 30 03 18.99 83 13 37.99 Mayo 78 84 147 -051124001 SRWMD Water Well 30 02 26.99 83 10 37.99 Mayo 80 55 148 -051202006 SRWMD Water Well 30 04 50.99 83 05 37.99 Mayo SE 50 75

PAGE 29

OPEN FILE REPORT NO. 91 27 Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 149 -051115010 SRWMD Water Well 30 02 48.99 83 12 17.99 Mayo 80 57 150 -041034003 SRWMD Water Well 30 05 07.99 83 18 14.99 Day SE 85 110 151 -041036002 SRWMD Water Well 30 05 07.99 83 16 55.99 Day SE 80 66 152 -041036003 SRWMD Water Well 30 05 18.99 83 15 58.99 Day SE 80 192 153 -041107002 SRWMD Water Well 30 09 15.99 83 15 19.99 Day 70 160 154 -041025004 SRWMD Water Well 30 06 02.99 83 16 10.99 Day SE 73 120 155 -051112001 SRWMD Water Well 30 03 41.99 83 10 23.99 Mayo 74 170 156 -051113008 SRWMD Water Well 30 02 39.99 83 09 54.99 Mayo 75 40 157 -051114001 SRWMD Water Well 30 03 05.99 83 11 09.99 Mayo 76 60 158 -051101002 SRWMD Water Well 30 04 54.99 83 09 55.99 Mayo 55 100 159 -051101007 SRWMD Water Well 30 04 41.99 83 11 00.99 Mayo 70 175 160 -041016003 SRWMD Water Well 30 08 10.99 83 19 50.99 Day 87 165 161 -041023007 SRWMD Water Well 30 07 28.99 83 18 02.99 Day SE 80 95 162 -041023008 SRWMD Water Well 30 07 17.99 83 17 39.99 Day SE 80 95 163 -041013002 SRWMD Water Well 30 07 49.99 83 16 14.99 Day 80 102 164 -041013005 SRWMD Water Well 30 08 21.99 83 16 27.99 Day 76 123 165 -051106005 SRWMD Water Well 30 04 47.99 83 15 32.99 Day SE 80 191 166 -051001001 SRWMD Water Well 30 04 54.99 83 16 27.99 Day SE 80 98 167 -050906001 SRWMD Water Well 30 04 19.99 83 27 59.99 Fenholloway 71 379 168 -021329008 SRWMD Water Well 30 16 56.99 83 01 53.00 Live Oak West 90 147 169 -031317003 SRWMD Water Well 30 13 52.99 83 02 37.99 Mayo NE 90 125 170 -031319004 SRWMD Water Well 30 12 35.99 83 03 07.99 Mayo NE 88 100 171 -031304004 SRWMD Water Well 30 15 30.99 83 01 01.00 Live Oak West 100 161 172 -021333005 SRWMD Water Well 30 15 59.09 83 01 41.50 Live Oak West 101 86 173 -021327006 SRWMD Water Well 30 16 55.19 83 00 32.70 Live Oak West 95 89 174 -031219001 SRWMD Water Well 30 12 58.99 83 08 53.99 Dowling Park 86 78 175 -031221001 SRWMD Water Well 30 12 17.99 83 07 11.99 Mayo NE 80 105 176 -011329003 SRWMD Water Well 30 22 21.99 83 02 28.00 Live Oak West 100 130 177 -011331004 SRWMD Water Well 30 21 41.99 83 02 52.00 Live Oak West 100 115 178 -031226007 SRWMD Water Well 30 11 18.99 83 05 01.99 Mayo NE 75 180 179 -031205005 SRWMD Water Well 30 15 34.99 83 07 00.00 Falmouth 90 240 180 -011331007 SRWMD Water Well 30 21 21.99 83 03 50.00 Live Oak West 100 120 181 -011333002 SRWMD Water Well 30 21 20.99 83 00 50.00 Live Oak West 148 147 182 -011315001 SRWMD Water Well 30 23 39.19 83 00 40.10 Fort Union 135 205 183 -031129004 SRWMD Water Well 30 11 27.99 83 14 04.99 Dowling Park 60 75 184 -031135003 SRWMD Water Well 30 10 30.99 83 10 59.99 Dowling Park 75 82 185 -031136001 SRWMD Water Well 30 11 14.38 83 10 13.94 Dowling Park 80 78 186 -031203002 SRWMD Water Well 30 15 11.99 83 06 08.00 Live Oak West 90 96 187 -031118005 SRWMD Water Well 30 13 15.99 83 15 32.99 Day 70 132 188 -021321008 SRWMD Water Well 30 17 26.09 83 01 34.00 Live Oak West 99 90 189 -021320007 SRWMD Water Well 30 18 06.99 83 02 17.00 Live Oak West 91 76 190 -021315006 SRWMD Water Well 30 18 41.99 83 00 43.00 Live Oak West 95 120 191 -011233008 SRWMD Water Well 30 20 53.99 83 07 40.00 Falmouth 85 112 192 -011213001 SRWMD Water Well 30 23 33.59 83 03 56.95 Fort Union 108 100 193 -011225001 SRWMD Water Well 30 21 57.99 83 03 55.00 Live Oak West 100 102 194 -031111001 SRWMD Water Well 30 14 22.41 83 11 52.07 Dowling Park 85 84 195 -031113001 SRWMD Water Well 30 13 12.99 83 10 38.99 Dowling Park 87 80 196 -031114001 SRWMD Water Well 30 13 13.63 83 11 08.17 Dowling Park 80 87 197 -021317001 SRWMD Water Well 30 18 34.99 83 01 58.00 Live Oak West 102 108 198 -011226002 SRWMD Water Well 30 21 47.99 83 05 19.00 Live Oak West 100 155

PAGE 30

FLORIDA GEOLOGICAL SURVEY 28Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 199 -011230002 SRWMD Water Well 30 21 46.99 83 08 58.00 Falmouth 79 140 200 -011209001 SRWMD Water Well 30 25 12.99 83 06 58.00 Fort Union 89 80 201 -011211002 SRWMD Water Well 30 24 48.99 83 05 17.00 Fort Union 150 160 202 -011203001 SRWMD Water Well 30 25 55.99 83 06 53.00 Fort Union 49 80 203 -031036001 SRWMD Water Well 30 10 26.99 83 16 05.99 Day 80 90 204 -031101001 SRWMD Water Well 30 15 14.99 83 10 02.00 Falmouth 89 160 205 -021305003 SRWMD Water Well 30 20 43.99 83 02 15.00 Live Oak West 101 160 206 -021308001 SRWMD Water Well 30 19 34.99 83 02 25.00 Live Oak West 100 95 207 -021235002 SRWMD Water Well 30 15 40.99 83 05 16.00 Live Oak West 89 104 208 -021231001 SRWMD Water Well 30 16 30.12 83 09 12.47 Falmouth 86 80 209 -011125001 SRWMD Water Well 30 22 02.99 83 10 34.00 Falmouth 72 50 210 -011104003 SRWMD Water Well 30 26 05.99 83 13 55.00 Ellaville 80 75 211 -031026004 SRWMD Water Well 30 11 41.99 83 17 26.99 Day 86 60 212 -031024008 SRWMD Water Well 30 12 55.99 83 16 51.99 Day 80 220 213 -021213001 SRWMD Water Well 30 18 36.99 83 04 43.00 Live Oak West 100 136 214 -021215001 SRWMD Water Well 30 18 48.39 83 06 18.17 Live Oak West 90 87 215 -021217001 SRWMD Water Well 30 18 38.99 83 08 49.00 Falmouth 83 75 216 -021220004 SRWMD Water Well 30 17 36.99 83 08 11.00 Falmouth 85 210 217 -021222001 SRWMD Water Well 30 17 45.86 83 06 05.28 Live Oak West 81 191 218 -021135001 SRWMD Water Well 30 16 03.99 83 11 13.00 Falmouth 80 225 219 -011034001 SRWMD Water Well 30 21 19.99 83 18 11.00 Madison SE 85 85 220 -011035001 SRWMD Water Well 30 20 59.19 83 17 11.40 Madison SE 88 78 221 -011036001 SRWMD Water Well 30 21 03.99 83 16 24.00 Madison SE 92 65 222 -011013001 SRWMD Water Well 30 23 56.99 83 16 29.00 Lee 95 80 223 -021202004 SRWMD Water Well 30 20 34.99 83 05 17.00 Live Oak West 90 100 224 -021204001 SRWMD Water Well 30 20 47.99 83 07 04.00 Live Oak West 81 255 225 -021133001 SRWMD Water Well 30 15 48.99 83 13 27.00 Falmouth 73 84 226 -021127001 SRWMD Water Well 30 16 47.99 83 12 51.00 Falmouth 68 80 227 -011015002 SRWMD Water Well 30 23 52.99 83 18 34.00 Lee 90 82 228 -011016001 SRWMD Water Well 30 23 57.99 83 19 18.00 Lee 93 85 229 -021122001 SRWMD Water Well 30 17 31.99 83 12 07.00 Falmouth 70 75 230 -021125001 SRWMD Water Well 30 16 36.99 83 10 25.00 Falmouth 80 170 231 -021002002 SRWMD Water Well 30 20 23.99 83 18 01.00 Madison SE 92 63 232 -021005002 SRWMD Water Well 30 20 49.99 83 20 05.00 Madison SE 95 65 233 -021008003 SRWMD Water Well 30 19 39.99 83 20 11.99 Madison SE 95 90 234 -011010004 SRWMD Water Well 30 24 38.99 83 18 30.00 Lee 90 75 235 -011004001 SRWMD Water Well 30 25 22.99 83 19 45.00 Lee 98 110 236 -011004006 SRWMD Water Well 30 25 51.99 83 19 32.00 Lee 101 95 237 -011005001 SRWMD Water Well 30 26 05.99 83 20 52.00 Lee 100 145 238 -011005002 SRWMD Water Well 30 25 58.99 83 20 13.00 Lee 95 126 239 -011001001 SRWMD Water Well 30 25 37.99 83 16 58.00 Lee 93 78 240 -011002002 SRWMD Water Well 30 25 23.99 83 17 20.00 Lee 97 92 241 -011002004 SRWMD Water Well 30 25 58.99 83 17 18.00 Lee 102 85 242 -010907001 SRWMD Water Well 30 24 52.99 83 28 01.99 Madison 145 140 243 -031035002 SRWMD Water Well 30 10 23.99 83 17 57.99 Day 82 80 244 -031035004 SRWMD Water Well 30 10 52.99 83 17 33.99 Day 85 80 245 -031205007 SRWMD Water Well 30 14 58.99 83 08 39.00 Dowling Park 95 120 246 -031211002 SRWMD Water Well 30 14 31.99 83 05 11.89 Mayo NE 85 84 247 -031219004 SRWMD Water Well 30 12 48.99 83 07 29.99 Mayo NE 85 138 248 -031303007 SRWMD Water Well 30 15 42.99 83 00 17.00 Live Oak West 100 127

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OPEN FILE REPORT NO. 91 29 Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 249 -031330002 SRWMD Water Well 30 11 49.99 83 03 40.99 Mayo NE 83 152 250 -041025005 SRWMD Water Well 30 06 05.99 83 16 36.99 Day SE 80 105 251 -041201003 SRWMD Water Well 30 09 32.99 83 03 51.99 Mayo NE 80 120 252 +011017001 SRWMD Water Well 30 28 55.99 83 20 20.00 Lee 100 200 253 -041209003 SRWMD Water Well 30 08 50.99 83 07 41.99 Dowling Park 60 77 254 -041210001 SRWMD Water Well 30 09 00.99 83 06 16.99 Mayo NE 66 66 255 -041226003 SRWMD Water Well 30 06 49.99 83 05 04.99 Mayo SE 50 100 256 -010911005 SRWMD Water Well 30 24 48.99 83 23 24.00 Madison 100 112 257 -031318003 SRWMD Water Well 30 13 01.78 83 03 32.45 Mayo NE 87 140 258 -031318002 SRWMD Water Well 30 13 15.91 83 03 19.99 Mayo NE 87 140 259 +011329001 SRWMD Water Well 30 27 37.99 83 02 34.00 Fort Union 87 190 260 -051108001 SRWMD Water Well 30 03 49.99 83 13 56.99 Mayo 80 140 261 -051203003 SRWMD Water Well 30 05 02.99 83 06 07.99 Mayo SE 45 140 262 -051208001 SRWMD Water Well 30 04 05.59 83 08 16.70 Mayo 69 71 263 +011308001 SRWMD Water Well 30 29 51.99 83 02 15.00 Fort Union 70 146 264 +011316001 SRWMD Water Well 30 29 00.19 83 01 48.70 Fort Union 100 167 265 +011316002 SRWMD Water Well 30 28 47.99 83 01 19.00 Fort Union 89 229 266 +011234001 SRWMD Water Well 30 26 41.99 83 06 52.00 Fort Union 71 71 267 +011216001 SRWMD Water Well 30 29 24.99 83 07 37.00 Ellaville 110 110 268 +011226001 SRWMD Water Well 30 27 10.99 83 05 50.00 Fort Union 60 46 269 +011211005 SRWMD Water Well 30 29 55.99 83 05 33.00 Fort Union 110 130 270 +011208002 SRWMD Water Well 30 29 50.99 83 08 18.00 Ellaville 114 165 271 +011119001 SRWMD Water Well 30 28 03.99 83 15 24.00 Lee 105 120 272 +011121002 SRWMD Water Well 30 27 56.47 83 13 56.92 Ellaville 73 76 273 +011117004 SRWMD Water Well 30 29 29.30 83 14 44.79 Ellaville 70 92 274 +011028003 SRWMD Water Well 30 27 11.82 83 19 56.11 Lee 122 120 275 +011030001 SRWMD Water Well 30 27 37.99 83 21 33.00 Lee 110 165 276 +011034001 SRWMD Water Well 30 26 38.99 83 18 55.00 Lee 100 105 277 +011035002 SRWMD Water Well 30 26 55.99 83 17 27.00 Lee 90 214 278 +011035003 SRWMD Water Well 30 26 31.99 83 17 11.00 Lee 100 85 279 +011109001 SRWMD Water Well 30 29 44.91 83 13 49.68 Ellaville 82 65 280 +011021006 SRWMD Water Well 30 28 07.99 83 19 16.00 Lee 120 177 281 -011223004 SRWMD Water Well 30 22 53.99 83 05 43.00 Fort Union 100 120 282 -011327002 SRWMD Water Well 30 22 35.99 83 0 30.00 Fort Union 150 200 283 -021101002 SRWMD Water Well 30 20 47.99 83 10 48.00 Falmouth 77 82 284 -021113002 SRWMD Water Well 30 18 50.99 83 10 30.00 Falmouth 73 164 285 -021201001 SRWMD Water Well 30 20 02.99 83 04 38.00 Live Oak West 100 175 286 -021229003 SRWMD Water Well 30 16 52.99 83 08 07.00 Falmouth 90 235 287 -021232002 SRWMD Water Well 30 15 56.99 83 08 04.00 Falmouth 90 120 288 -021310006 SRWMD Water Well 30 19 34.99 83 00 07.00 Live Oak West 110 146 289 +010813001 SRWMD Water Well 30 28 48.99 83 28 12.99 Madison 105 115 290 +010813002 SRWMD Water Well 30 29 23.99 83 28 13.99 Madison 110 135 291 -011011020 SRWMD Water Well 30 24 34.99 83 17 31.00 Lee 90 98 292 -011321003 SRWMD Water Well 30 23 12.99 83 01 46.00 Fort Union 120 160 293 +011129002 SRWMD Water Well 30 27 12.99 83 14 28.00 Ellaville 90 170 294 -041315007 SRWMD Water Well 30 08 14.33 83 00 17.52 Mayo NE 92 77 295 -041131006 SRWMD Water Well 30 05 33.99 83 15 39.99 Day SE 75 95 296 -011118007 SRWMD Water Well 30 24 21.99 83 15 46.00 Lee 90 145 297 -011214003 SRWMD Water Well 30 23 54.99 83 05 42.00 Fort Union 100 95 298 +011218001 SRWMD Water Well 30 29 16.99 83 09 18.00 Ellaville 80 125

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FLORIDA GEOLOGICAL SURVEY 30Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 299 -051333009 SRWMD Water Well 30 00 09.47 83 01 04.89 Mayo SE 46 50 300 -051333010 SRWMD Water Well 30 00 32.83 83 01 12.78 Mayo SE 38 38 301 -051328002 SRWMD Water Well 30 01 29.72 83 01 26.42 Mayo SE 31 170 302 +010918003 SRWMD Water Well 30 29 14.99 83 27 50.99 Madison 160 135 303 +010922005 SRWMD Water Well 30 28 38.99 83 24 23.00 Madison 150 165 304 -021223003 SRWMD Water Well 30 17 34.99 83 05 15.00 Live Oak West 90 160 305 -041317001 SRWMD Water Well 30 08 17.42 83 02 42.15 Mayo NE 77 63 306 +011117014 SRWMD Water Well 30 28 56.83 83 13 58.24 Ellaville 72 38 307 +011120008 SRWMD Water Well 30 28 35.37 83 14 10.19 Ellaville 69 30 308 +011030002 SRWMD Water Well 30 27 32.89 83 21 08.86 Lee 130 122 309 +011118005 SRWMD Water Well 30 29 19.36 83 15 43.24 Lee 108 115 310 +011130003 SRWMD Water Well 30 27 02.61 83 15 42.78 Lee 98 110 311 -011022006 SRWMD Water Well 30 23 08.99 83 18 29.00 Lee 80 125 312 -021321012 SRWMD Water Well 30 18 09.99 83 01 38.00 Live Oak West 100 130 313 -041222005 SRWMD Water Well 30 07 07.99 83 06 01.99 Mayo SE 50 170 314 -010924001 SRWMD Water Well 30 23 27.99 83 22 59.99 Madison 98 100 315 -051330007 SRWMD Water Well 30 01 33.99 83 03 15.99 Mayo SE 50 75 316 -041129008 SRWMD Water Well 30 06 38.99 83 14 40.99 Mayo 65 245 317 -041132008 SRWMD Water Well 30 05 46.99 83 14 47.99 Mayo 70 120 318 -051001005 SRWMD Water Well 30 04 53.99 83 16 00.99 Day SE 80 173 319 -051111016 SRWMD Water Well 30 04 04.99 83 11 09.99 Mayo 75 145 320 -051207011 SRWMD Water Well 30 04 05.99 83 08 57.99 Mayo 65 130 321 -051214015 SRWMD Water Well 30 03 03.99 83 05 36.99 Mayo SE 60 75 322 -051215004 SRWMD Water Well 30 03 17.99 83 06 01.99 Mayo SE 45 220 323 -051225006 SRWMD Water Well 30 00 57.99 83 04 13.99 Mayo SE 65 225 324 +010915005 SRWMD Water Well 30 29 10.99 83 24 10.00 Madison 140 163 325 +011019005 SRWMD Water Well 30 28 11.99 83 21 16.00 Lee 100 98 326 +010933010 SRWMD Water Well 30 26 37.99 83 25 40.99 Madison 130 130 327 -011001002 SRWMD Water Well 30 25 57.99 83 23 24.00 Madison 100 132 328 -011115001 SRWMD Water Well 30 23 48.99 83 12 22.00 Ellaville 80 170 329 -011120001 SRWMD Water Well 30 22 48.99 83 14 19.00 Ellaville 80 178 330 -041025008 SRWMD Water Well 30 06 26.99 83 16 17.99 Day SE 80 110 331 -041119010 SRWMD Water Well 30 07 32.26 83 15 41.09 Day 75 270 332 -051207010 SRWMD Water Well 30 03 34.99 83 09 01.59 Mayo 75 200 333 -021307003 SRWMD Water Well 30 19 44.99 83 03 48.00 Live Oak West 90 129 334 -031110001 SRWMD Water Well 30 14 04.99 83 12 31.99 Dowling Park 85 195 335 -031223003 SRWMD Water Well 30 12 45.14 83 05 47.30 Mayo NE 90 270 336 -031332004 SRWMD Water Well 30 10 31.99 83 02 42.99 Mayo NE 90 130 337 -011012012 SRWMD Water Well 30 24 25.99 83 16 20.00 Lee 80 95 338 -021309005 SRWMD Water Well 30 19 43.99 83 01 03.00 Live Oak West 100 220 339 -031320002 SRWMD Water Well 30 12 22.99 83 02 32.99 Mayo NE 105 170 340 -031330004 SRWMD Water Well 30 11 43.99 83 03 02.99 Mayo NE 85 220 341 -031330005 SRWMD Water Well 30 11 47.99 83 23 02.99 Day NW 85 165 342 -041305004 SRWMD Water Well 30 10 04.99 83 01 55.99 Mayo NE 90 190 343 +010812001 SRWMD Water Well 30 29 53.99 83 28 52.99 Madison 110 165 344 -041206001 SRWMD Water Well 30 09 56.99 83 09 36.99 Dowling Park 72 200 345 -041206002 SRWMD Water Well 30 09 54.99 83 09 09.99 Dowling Park 74 92 346 -041114004 SRWMD Water Well 30 08 26.99 83 10 56.99 Dowling Park 70 200 347 -031217002 SRWMD Water Well 30 13 49.99 83 08 03.99 Dowling Park 95 142 348 -051322003 SRWMD Water Well 30 02 31.44 83 00 36.35 Mayo SE 50 51

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OPEN FILE REPORT NO. 91 31 Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 349 -051322002 SRWMD Water Well 30 02 10.80 83 00 10.38 Mayo SE 52 46 350 -051201007 SRWMD Water Well 30 05 06.66 83 04 30.90 Mayo SE 39 40 351 -011309002 SRWMD Water Well 30 25 09.19 83 01 01.20 Fort Union 90 145 352 -051103003 SRWMD Water Well 30 04 56.69 83 12 54.39 Mayo 60 170 353 -051123003 SRWMD Water Well 30 01 57.99 83 10 54.99 Mayo 80 130 354 -051235004 SRWMD Water Well 30 00 42.99 83 04 45.99 Mayo SE 70 50 355 -011106002 SRWMD Water Well 30 25 34.99 83 15 52.00 Lee 90 220 356 -011001003 SRWMD Water Well 30 25 28.99 83 16 29.00 Lee 90 220 357 -011001004 SRWMD Water Well 30 25 56.99 83 16 21.00 Lee 90 220 358 -041111006 SRWMD Water Well 30 09 04.45 83 11 35.20 Dowling Park 74 66 359 -021210004 SRWMD Water Well 30 20 01.43 83 06 52.59 Live Oak West 78 59 360 -021214003 SRWMD Water Well 30 18 56.51 83 05 40.38 Live Oak West 88 74 361 -051210016 SRWMD Water Well 30 04 17.61 83 06 22.58 Mayo SE 57 51 362 -031224004 SRWMD Water Well 30 12 36.30 83 04 29.80 Mayo NE 92 160 363 +011024002 SRWMD Water Well 30 28 06.99 83 16 45.00 Lee 90 200 364 +011024003 SRWMD Water Well 30 28 33.99 83 16 44.00 Lee 110 220 365 -011116003 SRWMD Water Well 30 23 43.99 83 13 43.00 Ellaville 80 195 366 -011319002 SRWMD Water Well 30 22 56.99 83 03 06.00 Fort Union 90 115 367 -021124002 SRWMD Water Well 30 17 54.99 83 10 47.00 Falmouth 80 170 368 -051109008 SRWMD Water Well 30 03 51.46 83 12 57.53 Mayo 79 60 369 +011126002 SRWMD Water Well 30 27 36.99 83 11 12.00 Ellaville 80 295 370 -011121002 SRWMD Water Well 30 22 51.99 83 13 13.00 Ellaville 80 395 371 -011119001 SRWMD Water Well 30 22 34.99 83 15 22.00 Lee 90 95 372 -011121001 SRWMD Water Well 30 22 51.99 83 13 44.00 Ellaville 80 245 373 -011129002 SRWMD Water Well 30 21 59.99 83 14 49.00 Falmouth 80 228 374 -031026008 SRWMD Water Well 30 11 15.99 83 17 24.99 Day 80 90 375 +011135002 SRWMD Water Well 30 26 19.99 83 11 13.00 Ellaville 70 120 376 +011135003 SRWMD Water Well 30 26 52.99 83 11 07.00 Ellaville 70 220 377 +010917002 SRWMD Water Well 30 29 11.99 83 26 12.00 Madison 120 132 378 -011035006 SRWMD Water Well 30 21 44.99 83 18 02.00 Madison SE 90 95 379 +011113005 SRWMD Water Well 30 29 24.99 83 10 28.00 Ellaville 110 150 380 +011226005 SRWMD Water Well 30 27 10.99 83 04 57.00 Fort Union 70 132 381 -011328003 SRWMD Water Well 30 22 39.99 83 01 16.00 Fort Union 130 195 382 -021124001 SRWMD Water Well 30 18 01.99 83 10 23.00 Falmouth 80 270 383 -041322003 SRWMD Water Well 30 07 09.99 83 00 44.99 Mayo SE 80 175 384 -041327001 SRWMD Water Well 30 06 49.99 83 00 29.99 Mayo SE 85 225 385 -051309003 SRWMD Water Well 30 04 12.99 83 00 52.99 Mayo SE 55 140 386 +011126001 SRWMD Water Well 30 27 12.99 83 11 42.00 Ellaville 80 120 387 -011120002 SRWMD Water Well 30 22 25.99 83 14 44.00 Falmouth 80 520 388 -021220005 SRWMD Water Well 30 18 01.99 83 08 44.00 Falmouth 90 152 389 -021228004 SRWMD Water Well 30 16 35.99 83 07 01.00 Live Oak West 90 172 390 +011010002 SRWMD Water Well 30 29 48.99 83 18 42.00 Lee 100 180 391 -041118007 SRWMD Water Well 30 08 28.99 83 15 50.99 Day 75 145 392 -011116005 SRWMD Water Well 30 23 43.99 83 13 13.00 Ellaville 80 148 393 -011116006 SRWMD Water Well 30 24 02.99 83 13 26.00 Ellaville 80 190 394 -011121003 SRWMD Water Well 30 23 17.99 83 13 13.00 Ellaville 80 245 395 -031136003 SRWMD Water Well 30 10 25.99 83 10 10.99 Dowling Park 75 92 396 -031217001 SRWMD Water Well 30 13 21.99 83 08 25.99 Dowling Park 95 195 397 -031219005 SRWMD Water Well 30 12 39.99 83 09 29.99 Dowling Park 80 120 398 +011216007 SRWMD Water Well 30 29 11.99 83 06 55.00 Fort Union 90 145

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FLORIDA GEOLOGICAL SURVEY 32Map ID # *Archived ID # Data Source Data Type LATITUDE DD MM SS LONGITUDE DD MM SS 1:24,000 Quadrangle Elev. (Feet) Total Depth (Feet) 399 +011013004 SRWMD Water Well 30 29 25.99 83 16 29.00 Lee 120 180 400 -051211006 SRWMD Water Well 30 03 59.99 83 05 30.99 Mayo SE 45 135 401 -041133005 SRWMD Water Well 30 05 39.99 83 13 15.99 Mayo 60 130 402 -051216013 SRWMD Water Well 30 02 58.99 83 07 18.99 Mayo SE 70 295 403 -021010001 SRWMD Water Well 30 19 14.99 83 18 32.00 Madison SE 90 200 404 -021015004 SRWMD Water Well 30 18 38.99 83 18 32.00 Madison SE 90 245 *NOTE: Suwannee River Water Ma nagement District (SRWMD) Archived ID # is the well’s township, range, and section location. The format is as follows: + or – indicates township north (+) versus south (-); there is no n eed to include an east / west indi cator for the range, as the entire SRWMD is east of the Prime Meridian. Following the +/are 6 digits representing the township, range, and section (TTRRSS), and finally a 3 di git unique identifier assigned consecutively to each well within a given section to differentiate wells with the same +/and 6 digit number. For example: -031224004 means Township 03 South, Range 12 East, Section 24, unique well 004.