A watershed is the area of land that drains to a particular body of water. The slope of the land determines which way water will flow according to gravity, so the shape of a watershed is determined by the ridges (high points) surrounding the stream valley (lowest points.) Philadelphia has seven major watersheds whose streams all flow to the Delaware River – Delaware Direct, Schuylkill River, Darby-Cobbs Creek, Wissahickon Creek, Poquessing Creek, Pennypack Creek and ours, the Tookany/Tacony-Frankford Creek. Click here to find your watershed.
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