EPA Water Quality Testing Data Summary Maps

Ohio EPA Water Quality Testing Data

All files open with Adobe Acrobat Reader. You can download this program for free here.

The first set of maps are strictly based on a number of sites basis and do not take into account the size of the subwatershed nor is it percentage based.

Total OEPA Number of Historical Testing Locations Highest # sites: Big Darby Below Flat Branch-21 Lowest # sites: Robinson Run- 3	OEPA 2001-2002 Number of Testing Locations Highest # sites: Big Darby Below Flat Branch-16 Lowest # sites: Robinson Run- 3	OEPA 2001-2002 Number of Testing Sites- Full Attainment Highest # sites: Big Darby Below Flat Branch and Middle Lower Big Darby-12 Lowest # sites: Robinson Run- 0	OEPA 2001-2002 Number of Testing Sites- Partial Attainment Highest # sites: Big Darby Below Flat Branch, Headwaters Little Darby, Hellbranch and Big Darby MC to PC -4 Lowest # sites: Robinson Run- 3
OEPA 2001-2002 Number of Testing Sites- Non-Attainment Highest # sites: Hellbranch- 2	OEPA 2001-2002 Number of Testing Sites- Non or Partial Attainment Highest # sites: Hellbranch- 8 Lowest # sites: Lower Little- 0

This table is percentage based. Sites that are in full, partial and non-attainment divided by the number of sites. This is also not based on the size of the subwatershed but on the number of sites that were sampled in each subwatershed in 2001 or 2002.

Percentage of sites in Full attainment
|Highest %: Lower Little Darby Creek and Flat Branch*: 100%
Lowest %: Robinson Run 0%

Percentage of Sites in Partial Attainment
Highest %: Headwaters Little Darby, Buck Run and Spring Fork 50.0%
Lowest %: Lower Big Darby, Headwaters Big Darby, Flat Branch and Lower Little Darby 0%

Percentage of Sites in Non-Attainment
Highest %: Robinson Run 67.7%

Percentage of Sites in Non or Partial Attainment
Highest %: Robinson Run 100.0%
Lowest %: Flat Branch* 0%

*After the 2001 testing, the Modified Warmwater Habitat was proposed to be upgraded to Warm Water Habitat.

If you would like to view all the Ohio EPA Water Quality Testing maps in one pdf document, that is also available by clicking here. This is a 1.5 MB document so this method is not recommended for users with slower internet connections.

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Last updated: August 18, 2008.