Front Cover
Front Cover 1
Front Cover 2
Title Page
Title Page 1
Page ii
Table of Contents
Page i
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Page iii
Page iv
Introduction
Page 1
USGS water quality data summary
Page 2
Page 3
Page 4
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Page 9
Water quality trends and correlations
Page 10
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Page 12
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Page 17
Conclusions
Page 18
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