Final TMDLs Approved by EPA: Corsica River

The Corsica River is located on Maryland’s Eastern Shore in Queen Anne’s County, MD, and its restricted area is the most upstream portion of approximately six km in length.  This upper restricted portion of the Corsica River flows west into the unrestricted portion, ending approximately three km from the mouth of the Corsica River.  From here it flows into the Eastern Bay, which in turn flows into the Chesapeake Bay.  The Corsica River restricted shellfish harvesting area has a drainage area of 20,692.1 acres (83.7 km2).   The Corsica River has a width of about 500 m.

Corsica River (basin number 02130507) was first identified on the 1996 303(d) list submitted to U.S. Environmental Protection Agency (EPA) by the Maryland Department of the Environment (MDE) as impaired by nutrients, sediments and fecal coliform, with listings of biological impacts in the non-tidal portions and toxics in tidal portions added in 2002. 

The document available below establishes a TMDL of fecal coliform for the Corsica River.  The basis of the harvesting area closure was current fecal coliform data from the shellfish monitoring program that either the median or 90th percentile Food and Drug Administration standards had been exceeded, and therefore resulted in the areas being classified as "restricted" or closed to direct harvest.  A TMDL for nutrients was approved in 2000; the suspended sediment, biological, and toxic impairments within the Corsica River basin will be addressed at a future date.


Total Maximum Daily Loads of Fecal Coliform for the Restricted Shellfish Harvesting Portion of the Corsica River in Queen Anne’s County, MD

(Approved on November 4, 2005)

EPA's Decision Letter EPA's Decision Letter
Main Report TMDL_corsica_fc.pdf (686KB)

Comment Response Document

CRD_corsica_fc.pdf (58KB)


Contact Information

Please direct questions or comments concerning this project to Maryland's TMDL Program at (410) 537-3818.