The Prince George’s County Department of Permitting, Inspection and Enforcement (DPIE) has implemented the 100-Year Stormwater Management (SWM) Regulations for all new and redevelopment projects moving forward that are located within the yellow shaded areas on the map pictured here.

Whether your project is on a new site or the redevelopment of an existing site, if it is located within the yellow shaded area and currently has no SWM, your project will be affected.

The changes are in part due to the intensity of the storms Maryland has been experiencing and the impaired waterways that are causing downstream impacts for so many areas. The 100-Year SWM requirements will force future development to implement peak management strategies into their site design, which could impact the density of the site and cost of the project.

Mat Karim, Assistant Vice President of christopher’s Maryland Operations, has an extensive background working in Prince George’s County, as well as surrounding jurisdictions, and is ready to help you navigate these new changes. He can be reached at or 240.296.1569 to discuss the impacts to the density and cost of the project site, as well as provide solutions.