Emergency Closures

Title	Description	Closure Map	Effective Dates	Reopening Date
Emergency Closure - Upper Potomac River, Charles County, MD	Upper Potomac River, Charles County All of the waters of the Potomac River upstream of a line running in a slight northeasterly direction from a point of land (38°21'33.2" North Latitude, 77°00'54.8" West Longitude) on the Virginia shore of the Rt. 301 Bridge to a point of land (38°21'48.5" North Latitude, 76°58'58.1" West Longitude) on the opposite Maryland shore of the Rt. 301 Bridge, and all of the waters of the Potomac River downstream of a line running in an northerly direction extending from a point of land (38°22'03.4" North Latitude, 77°05'29.4" West Longitude) on the Virginia shore of the Potomac River to a point of land (38°54'22.3" North Latitude, 77°05'29.7" West Longitude) on the opposite Maryland shore.	Emergency Closure Map - Upper Potomac River, Charles County, MD	January 23, 2026	21 Days after Cessation of Sewage Discharge