Ohio Environmental Protection Agency(OEPA) Total Maximum Daily Load Phosphorous Summary Maps

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

Phosphorous Reduction Needed in pounds per acre per year Highest: Hellbranch 1.1 lb/ac/yr     Lowest*: Big Darby I-70 to I-71 0.35 lb/ac/yr	Percent Total Phosphorous Reduction Needed Highest %: Headwaters Big Darby 88%   Lowest*: Big Darby I-70 to I-71 42%	Percent Groundwater Phosphorous Reduction Needed Highest %: Headwaters Big Darby 95%    Lowest*: Big Darby I-70 to I-71 46.3%	Percent Runoff Phosphorous Reduction Needed Highest %: Headwaters Big Darby 95%    Lowest*: Big Darby I-70 to I-71 46.3%
Percent Septic Phosphorous Reduction Needed Highest %: Headwaters Big Darby 93.0%    Lowest*: Middle Big Darby 49%	Percent WWTP Phosphorous Reduction Needed Highest %: Big Darby Milford Center to Plain City 63%    Lowest*%: Middle Lower Big Darby 18%

*Some subwatersheds are not in need of some of the reductions listed in TMDL.   The Lowest represents the subwatershed that has that reduction needed and has the lowest non-zero value.

If you would like to view all the TMDL-Phosphorous maps in one pdf document, that is also available by clicking here.  This is a 1.0 MB document so this method is not recommended for users with slower internet connections.

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 Darby Watershed Coordinator.
Last updated: November 18, 2008.