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Watershed Implementation Plans - Chesapeake Bay

The EPA has issued a Total Maximum Daily Load (TMDL) for the entire Chesapeake Bay watershed spanning six states (New York, Pennsylvania, Delaware, Maryland, West Virginia, Virginia) and the District of Columbia. The Bay TMDL is a 'pollution diet' that sets a maximum loading of Nitrogen, Phosphorous and Sediment that each jurisdiction can release to its waters which reach the Chesapeake Bay. A TMDL was issued because the goals of the previous Chesapeake Bay Agreements aimed at cleaning up the Bay were not met according to the deadlines set in the Agreement.

The District supports the EPA's goals contained in the Bay TMDL, and hopes that this TMDL tool will help curb pollution reaching the Potomac and Anacostia rivers and Rock Creek from upstream jurisdictions. The District's Watershed Implementation Plan (WIP) identifies details of actions explaining how DC will achieve and maintain the water quality benefits outlined in the Bay TMDL. The WIP also provides transparency and accountability throughout the Bay TMDL process.

- Two-Year Milestones [PDF]

  • 2009 - 2011 Milestones

  • 2009 - 2011 Final Progress Report

  • 2012 -2013 Two-Year Milestones

- Phase I Watershed Implementation Plan [PDF]

  • DC Watershed Implementation Plan, Phase I

  • 2011 Two-Year Milestones

- Phase II Watershed Implementation Plan

- Bay TMDL Timeline

Phase I

Draft Phase I DC WIP September 1, 2010
Final Phase I DC WIP

November 29, 2010

EPA Issues Bay TMDL December 31 2010

Phase II

Draft 2012-2013 Milestones November 1, 2011
Draft Phase 2 DC WIP December 15, 2011
Final 2012-2013 Milestones January 6, 2013
Final Phase 2 DC WIP March 30, 2012

Useful Links:

-EPA, Chesapeake Bay TMDL    -Chesapeake Bay Executive Order Strategy

Please direct all comments or questions related to the DC WIP to: Diane Davis; diane.davis2@dc.gov or Sarah Sand; sarah.sand@dc.gov.

Contact TTY: