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The MS4 (Municipal Separate Storm Sewer System) Permit Program is a federal Environmental Protection Area (EPA) program that is administered in Md. through the Md. Dept. of the Environment (MDE). This layer helps to identify watershed boundaries for regulatory purposes and environmental analysis.
The Maryland MS4 Program requires each Md. county to implement measures to reduce and eliminate stormwater pollution and meet specific water quality standards. In this County, the Montgomery Co. Department of Environmental Protection (DEP) is the lead agency for coordinating and implementing County programs to help meet MS4 Program requirements. To create a framework to identify appropriate measures to implement and monitor the progress of the County’s water quality protection and improvement projects, DEP identified and defined 8 major watersheds in the County. These watersheds are known as the “MS4 Watersheds”.The Montgomery County Department of Environmental Protection(DEP) has digitized and is maintaining the watershed boundaries. |