The City of Baltimore owns and manages the Loch Raven, Prettyboy, and Liberty reservoirs, located north and northwest of the City, in the northern Piedmont region of Maryland. These reservoirs supply water to over 1.8 million people. The watersheds, which are the primary source of water supply for the reservoirs, are located in Baltimore, Harford, and Carroll Counties in Maryland, as well as York County, Pennsylvania. City-owned land makes up only an average of 7 percent of the total area of the watersheds draining into each reservoir. These source water drainages are part of the urbanizing, and expanding, Baltimore - Washington metro area which is the fourth largest in the U.S. The Prettyboy and Liberty basins, however, are still rural in character with agricultural use predominant.

Reservoir Natural Resources Section