![]() ![]() The Anacostia watershed is one of the most densely populated watersheds within the Chesapeake Bay drainage basin. The Anacostia Watershed encompasses 456 square kilometers (176 square miles) within suburban Maryland and the District of Columbia, and crosses two major physiographic provinces, the Coastal Plain and Piedmont. These shifts in land use patterns over the last three centuries have drastically changed the ecology of the watershed. The ongoing loss of forest and wetland habitat, alteration of streamflow, increases in nonpoint source pollution, and discharges of combined sewer overflow and industrial waste have all contributed to the decline in the ecological health of the watershed. ![]() Since the late nineteenth century, ecological problems in the Anacostia Watershed have largely resulted from an expanding human population and the associated changes in land use and land cover. ![]()
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