1Becks Run Basin2.1902801865761061239.491973955214.6993102751 2Thompson Run Basin0.47992813191413379569.958526621481.59349666 3Streets Run Basin2.0115912048756079697.963714668195.3809580349 4Shades Run Basin0.1773025101374942888.1933593811495.0624418555 5Saw Mill Run Basin10.4383357775291002824.555969110745.331751638 6Nine Mile Run Basin2.9136160205481226597.59893862513.3426381244 7Nelson Run Basin0.09353211416722607514.1800537112100.3200536947 8Jacks Run Basin0.44118607186812299507.958129924224.4223785731 9Chartiers Creek Basin3.2040358162989322999.996704190978.4308006516 10Allegheny River Basin17.6121440974490996247.075195162697.790784449 11Ohio River Basin6.6416866969185158787.27743578724.035024529 12Monongahela River Basin12.3982183785345640977.015503155887.396046788