<Ul> <Li> Average rate: 19,750 cu ft / s (559 m / s) at the village of Natrona, PA (river mile 24.3) </Li> </Ul> <Li> Average rate: 19,750 cu ft / s (559 m / s) at the village of Natrona, PA (river mile 24.3) </Li> <Tr> <Th_colspan="2"> Basin features </Th> </Tr> <Tr> <Th> Basin size </Th> <Td> 11,580 square miles (30,000 km) </Td> </Tr>

Where does the allegheny river begin and end