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B. Water Quality Data 6. Water Quality Sampling Trends With the vast amount of water quality data available, an
analysis was completed that illustrated trends in water quality results in
regions that were sampled in multiple years.
In total there were 93 locations that were sampled in multiple years and
56 locations that were only sampled once for a total of 149 locations.
The IBI (fish) and ICI (bug) scores collected by Ohio EPA between 1979
and 2002 were used to determine the trends in water quality data which is
displayed in Map 18 (See
Appendix I for complete list of historical sampling
results). Of all sampling locations,
43 were improving, 30 were declining, and 20 have stayed about the same.
Map 21 displays the water quality trends in the Darby Watershed.
The majority of sites with declining water quality results were in |
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