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Watercourses Designated for Protection
Hydrographic features included in Philadelphia Hydrology Map. This map was officially adopted by City Council as the official map of Philadelphia Watercourses Designated for... -
PWD Sewersheds
A sewershed is the area of land where all the sewers flow to a single end point, in most cases it is a regulator/permitted outfall, but in cases when the flow can be split...
