The Little Gunpowder Falls watershed is located in the Upper Western Shore region of the Chesapeake Bay watershed within Maryland. The watershed covers portions of Baltimore and Harford counties. The watershed area covers 37,340 acres.
The Little Gunpowder Falls (basin code 02130804) was identified on the State’s 1996 list of Water Quality Limited Segments (WQLSs) as impaired by heavy metals and nutrients. The report available below provides an analysis of recent monitoring data, which shows that the aquatic life criteria and designated uses associated with heavy metals are being met in the Little Gunpowder Falls. The analysis supports the conclusion that a TMDL of heavy metals is not necessary to achieve water quality standards in this case. Barring the receipt of any contradictory data, the report will be used to support the removal of Little Gunpowder Falls from Maryland’s list of WQLSs for heavy metals when MDE proposes the revision of Maryland’s 303(d) list for public review in the future. The nutrient listing was addressed separately in 2009.
Water Quality Analysis of Metals for the Little Gunpowder Falls, Baltimore and Harford Counties, MD
(Concurrence February 20, 2003)
EPA's Decision Letter
Comment Response Document
1800 Washington Boulevard, Baltimore, MD 21230