Water Quality Analyses (WQA) with EPA Concurrence of MDE's Findings: Lower Susquehanna River

The Lower Susquehanna River is located in Cecil and Harford County, Maryland and flows from the outlet of the Conowingo Dam south into the headwaters of the Chesapeake Bay. The Lower Susquehanna River, Deer Creek, Octoraro Creek, and Broad Creek are all part of the network of streams that make up the basin.  Lower Susquehanna River is approximately 10 miles in length, with a watershed area of approximately 19,885 acres.

The Lower Susquehanna River (basin code 02120201) was first identified on the 1996 303(d) list, submitted to EPA by the Maryland Department of the Environment (MDE), as being impaired by nutrients, sediments, and cadmium (Cd) with polychlorinated biphenyls (PCBs) in fish tissue and biological impairment added to the list in 2002.   The biological impairment listing is designated for two non-tidal streams, Herring Run and an unnamed tributary of the Lower Susquehanna River, while the remaining listings apply to the tidal portion.  The report available below provides more recent information that supports the removal of the nutrients listing for the tidal portion of the Lower Susquehanna River when the 303(d) list is revised.  The sediment, Cd, PCB and biological impairments will be addressed at a future date. 

WQA of Eutrophication for the Tidal Lower Susquehanna River in Harford and Cecil Counties, MD

(Concurrence: January 11, 2006)

EPA's Decision Letter EPA's Decision Letter

Main Report 


Comment Response Document



Contact Information

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