Department of Energy & Environment

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Anacostia Watershed Sediment and TSS TMDL

Tuesday, October 18, 2011

The Anacostia River watershed covers portions of Maryland and the District.  Most of the non-tidal tributaries lie within Maryland, and most of the tidal waters are within the District’s boundaries. This sediment/ total suspended solids (TSS) total maximum daily load (TMDL) for the Anacostia watershed was developed through a cooperative agreement between US Environmental Protection Agency Region 3 (EPA), the District Department of the Environment (DDOE), and Maryland Department of the Environment (MDE). This TMDL report establishes TMDLs for sediment/TSS in the tidal and non-tidal portions of the Anacostia watershed in both Maryland and the District and is a tool to be used for meeting the water quality standards for their designated uses. The TMDLs will address water clarity problems and associated impacts to aquatic life in the Anacostia caused by high sediment and TSS concentrations.  The TMDL was approved by EPA on July 24, 2007.

The following documents include TMDLs for sediments/TSS for portions of the Anacostia River, Watts Branch, and Lower Beaverdam Creek within the District.