Final TMDLs Approved by EPA: Jones Falls

The Jones Falls watershed is located in the Patapsco River region of the Chesapeake Bay watershed within Maryland.  The watershed covers a portion of Baltimore County and Baltimore City, Maryland.  Jones Falls proper flows east and south from its headwaters in Garrison, Maryland to its discharge into the Inner Harbor in downtown Baltimore City.  An impoundment is located at Lake Roland, just north of the Baltimore County/City boundary.  Several tributaries drain to the Jones Falls mainstem, including Moores Branch, Roland Run, Towson Run, Western Run, and Stoney Run.  The entire Jones Falls watershed area comprises 37,290 acres (58.3 sq. mi.). 

The Maryland Department of the Environment (MDE) has identified Jones Falls and all tributaries above Lake Roland, a designated Use III waterbody (Water Contact Recreation, Protection of Aquatic Life and Natural Trout Waters), and Jones Falls between North Avenue (Baltimore City) and Lake Roland, a designated Use IV waterbody (Water Contact Recreation, Protection of Aquatic Life and Recreational Trout Waters)  [Code of Maryland Regulations (COMAR)] in the State’s 303(d) List as impaired by metals (copper and lead) (1996), nutrients (1996), sediments (1996), bacteria (fecal coliform) (2002), polychlorinated biphenyls (PCBs) - Lake Roland (2002), and by impacts to biological communities (2004).  The document available below establishes a TMDL for fecal bacteria in Jones Falls and its tributaries that will allow for the attainment of the designated use, primary contact recreation.  The impairment for metals (copper and lead) was removed from the 303(d) List through a water quality analyses approved by EPA in December 2, 2004.  A TMDL for chlordane was approved by EPA on March 23, 2001.  The listings for nutrients, sediments, PCBs and impacts to biological communities will be addressed separately at a future date.  A data solicitation for fecal bacteria was conducted by MDE in 2003, and all readily available data from the past five years was considered.

Total Maximum Daily Loads of Fecal Bacteria for the Non-Tidal Jones Falls Basin in Baltimore City and Baltimore County, Maryland

(Approved on February 12, 2008)

EPA's Decision Letter EPA's Decision Letter
Main Report TMDL_jonesfalls_fc.pdf (2034KB)

Comment Response Document

CRD_jonesfalls_fc.pdf (25KB)


Contact Information

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