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Total Maximum Daily Load Implementation Plans by Watershed

Baltimore County Department of Environmental Protection and Sustainability (EPS) developed Total Maximum Daily Load (TMDL) Implementation Plans for all of its existing TMDLs in 2014, per its Municipal Separate Storm Sewer System (MS4) permit requirements. In response to comments by the Maryland Department of the Environment (MDE), Baltimore County revised and resubmitted the plans in 2016. Implementation Plans for any new TMDLs will be developed within one year of final TMDL approval; this timeframe includes a 30-day public comment period.

Annual updates and progress toward the Implementation Plans will be reported in Baltimore County’s annual National Pollutant Discharge Elimination System (NPDES)—Municipal Stormwater Discharge Report, Section 10 (PDF).

Periodically, the plans will be reviewed and revised. Public comment on existing Implementation Plans will be accepted at any time and will be addressed upon the subsequent revision. If you wish to comment or have questions about the Implementation Plans, please email Comments will also be accepted in hard copy through the United States Postal Service. Mail to:

Attention: Watershed Management
111 West Chesapeake Avenue, Room 319
Towson, Maryland 21204

Include the name of document, section and page numbers along with your comments.

The Implementation Plans developed by Baltimore County are linked below, organized by impaired watershed. Select the pollutant name beneath the watershed name to view the respective plan. The following documents are PDFs that open in a new window.

Back River

Baltimore Harbor

Bird River

Gwynns Falls

Jones Falls

Liberty Reservoir

Loch Raven Reservoir

Patapsco Lower North Branch

Prettyboy Reservoir

Revised July 22, 2020         


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