Draft Total Maximum Daily Load (TMDL) Documents for Public Comment


Comment Submission Deadline

Revised Final Total Maximum Daily Loads of Fecal Bacteria for the Non-Tidal Piscataway Creek Basin in Prince George’s County, Maryland ​​Closed
June 11, 2018
​Total Maximum Daily Loads of Nitrogen and Phosphorus for the Baltimore Harbor in Anne Arundel, Baltimore, Carroll and Howard Counties and Baltimore City, Maryland Closed
June 6, 2018
Total Maximum Daily Load of Sediment in the Non-Tidal Patuxent River Middle Watershed, Anne Arundel, Calvert, and Prince George's Counties, Maryland Closed
​April 12, 2018
Total Maximum Daily Load of Sediment in the Patuxent River Lower Watershed, Anne Arundel, Calvert, Charles, Prince George's and Saint Mary's Counties, Maryland Closed
April 12, 2018


Data Solicitation for the Potomac River

Maryland Department of the Environment is looking for data and information that would be helpful in addressing nutrient, sediment, polychlorinated biphenyl (PCB), mercury, impacts to biological communities, temperature, and pH impairments in specific watersheds within the Potomac River Watershed. If you are aware of available data and/or information pertaining to the above-referenced impairments for the Potomac River Region, please view this correspondence with care.

Contact Information

Please direct questions or comments concerning Maryland's TMDL Program to Melissa Chatham at (410) 537-3937.​​