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B.
Water
Quality Data
1. Sampling
Sites
The Darby Watershed is one of the most studied watersheds in the state of
Ohio
. Beginning in 1979, Ohio EPA began
periodic water quality testing as a result of the Clean Water Act.
In the past 34 years there have been nearly 1000 fish and 300 bug samples
in addition to other water quality sampling. (Appendix
I lists all historical fish and bug samples since 1979 when Ohio EPA first
started water quality sampling). For
example, the most sampled stream segment is a half mile section of Little Darby
Creek near US 42 that has been sampled for fish 33 times between 1979 and 2001.
Appendix J list all of the sampling sites and their results from Ohio
EPA’s water quality survey in 2001 and 2002.
A total of 127 sites were sampled by Ohio EPA during 2001 and 2002.
The number of sampling sites is divided by county in Figure 87.
|
Figure
87: Darby Watershed Sampling
Sites by County
|
|
County
|
Sites
|
Full Attainment
|
Partial Attainment
|
Non Attainment
|
|
Champaign
|
16
|
10
|
6
|
0
|
|
Franklin
|
21
|
12
|
5
|
4
|
|
Logan
|
7
|
5
|
1
|
1
|
|
Madison
|
32
|
24
|
7
|
1
|
|
Pickaway
|
18
|
14
|
2
|
2
|
|
Union
|
33
|
19
|
10
|
4
|
|
Total
|
127
|
84
|
31
|
12
|
Source:
Ohio
EPA,
Darby
Creek
Watershed Technical Support Document for 2001-02, June, 2004. pgs
A3 – A9.
 
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