The Allegheny River of western Pennsylvania and New York rises in Potter County, Pennsylvania, and flows 320 miles to its confluence with the Monongahela River in Pittsburgh. The Allegheny's southern watershed district begins in East Brady, Pennsylvania, and ends in Pittsburgh, and it includes the historic Redbank Creek, Mahoning Creek, Crooked Creek, and Kiskiminetas River valleys. Along the Allegheny River: The Southern Watershed features over 200...
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