Water Quality Analyses (WQA) with EPA Concurrence of MDE's Findings: Little Gunpowder Falls

The Little Gunpowder Falls watershed is located in Maryland in the Upper Western Shore Region of the Chesapeake Bay watershed.  The watershed covers portions of Baltimore and Harford counties with Little Gunpowder Falls defining the county boundary.  Little Gunpowder Falls joins the Gunpowder Falls near Joppatowne before reaching the Gunpowder River.  The watershed drains from northwest to southeast and has a drainage area of 37,339 acres.

Little Gunpowder Falls (basin code 02130804) was identified on the State’s list of WQLSs as impaired by nutrients (1996), heavy metals (1996) and impacts to biological communities (2006).  The listings for metals and impacts to biological communities were addressed in 2003 and 2008 respectively.  In MDE’s 2008 “Integrated Report of Surface Water Quality in Maryland,” the waters of Little Gunpowder Falls were assessed as meeting biological standards.  The document, available below, addresses the nutrients listing in the Little Gunpowder Falls watershed. 

Water Quality Analysis of Eutrophication for the
Little Gunpowder Falls Basin
in Baltimore and Harford Counties, Maryland

(Concurrence August 26, 2009)

EPA's Decision Letter

EPA's Decision Letter

Main Report 

WQA_littlegunpowder_eutro.pdf (504KB)

Comment Response Document

CRD_littlegunpowder_eutro.pdf (7KB)


Contact Information

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