The Darby watershed is one of the most tested and observed watersheds in Ohio.  Testing in the watershed began in the late 1970's.   During the summer of 2001-2002, OEPA tested 127 sites.  Of these sites, 84 (66%) were in full attainment, 31 (24%) were in partial attainment, and only 12 (9%) were found to be in non attainment.  Attainment is a term describing the degree to which environmental indicators (fish, bugs, and habitat) are either above or below criteria specified by the Ohio Water Quality Standards (WQS).   The Darby supports a wide range of bugs (macroinvertebrates), fish and mussels, some of which are endangered.

Below is a list of the subwatersheds.  Each subwatershed has varying amounts of historical data. If there is no active link, this will be updated in the near future.  The historical data is also available in the subwatershed plan documents.

Big Darby Creek Subwatersheds (Please click on your subwatershed to view the historical data):

1. Headwaters Big Darby Creek Headwaters to Flat Branch)
2. Flat Branch
3. Big Darby Creek below Flat Branch to Milford Center (including Spain Creek)
4. Buck Run
5. Robinson Run
6. Big Darby Creek from Milford Center to Plain City
7. Sugar Run
8. Middle Big Darby (Plain City to High Free Pike)
9. Headwaters Little Darby Creek (above Treacle Creek)
10. Treacle Creek and Proctor Run
11. Middle Little Darby Creek (Treacle Creek to Spring Fork)
12. Spring Fork
13. Lower Little Darby Creek (Spring Fork to confluence with Big Darby)
14. Big Darby I-70 to I-71
15. Hellbranch
16. Middle Lower Big Darby Creek (Hellbranch to Darbyville)
17. Lower Big Darby (Darbyville to confluence with Big Darby) 

Need additional information?

For more information on the Darby Watershed, please contact  your local SWCD.

All information found on this website is for informational purposes only by the Darby Joint Board of Supervisors. All text, images, logos and information contained on this website are property of the Joint Board and they may not be used or reproduced without permission of the Joint Board. 
For problems or questions regarding this website please contact the Website Administrator.
Last updated: April 7, 2009.