<Table> <Tr> <Th_colspan="2"> Allegheny River </Th> </Tr> <Tr> <Td_colspan="2"> The Allegheny River, looking upstream at Freeport, Pennsylvania </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th_colspan="2"> Physical characteristics </Th> </Tr> <Tr> <Th> Main source </Th> <Td> Allegany Township, Potter County, near Coudersport, Pennsylvania at the corner of Ben Green and Cobb Hill Rd ~ 2,490 feet (760 m) 41 ° 52 ′ 22" N 77 ° 52 ′ 30" W ﻿ / ﻿ 41.872844 ° N 77.874998 ° W ﻿ / 41.872844; - 77.874998 </Td> </Tr> <Tr> <Th> River mouth </Th> <Td> Ohio River at Pittsburgh, Pennsylvania 40 ° 26 ′ 36" N 80 ° 00 ′ 54" W ﻿ / ﻿ 40.443402 ° N 80.015053 ° W ﻿ / 40.443402; - 80.015053 Coordinates: 40 ° 26 ′ 36" N 80 ° 00 ′ 54" W ﻿ / ﻿ 40.443402 ° N 80.015053 ° W ﻿ / 40.443402; - 80.015053 </Td> </Tr> <Tr> <Th> Length </Th> <Td> 325 miles (523 km) </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> <Ul> <Li> Average rate: 19,750 cu ft / s (559 m / s) at the village of Natrona, PA (river mile 24.3) </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Basin features </Th> </Tr> <Tr> <Th> Basin size </Th> <Td> 11,580 square miles (30,000 km) </Td> </Tr> <Tr> <Th> Tributaries </Th> <Td> <Ul> <Li> Left: Tionesta Creek, Clarion River, Redbank Creek, Mahoning Creek, Crooked Creek, Kiskiminetas River, Buffalo Creek, Chartiers Run, Pucketa Creek </Li> <Li> Right: Conewango Creek, Brokenstraw Creek, Oil Creek, French Creek, Bull Creek, Deer Creek, Squaw Run, Pine Creek, Girtys Run </Li> </Ul> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th_colspan="2"> National Wild and Scenic River </Th> </Tr> <Tr> <Th> Type </Th> <Td> Recreational </Td> </Tr> <Tr> <Th> Designated </Th> <Td> April 20, 1992 </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Allegheny River </Th> </Tr> <Tr> <Td_colspan="2"> The Allegheny River, looking upstream at Freeport, Pennsylvania </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr>

Where does the allegheny river start and end