Ohio River upstream end (OSM) to Ohio River downstream end (OSM)
● Ohio River upstream end (OSM)
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● Ohio River downstream end (OSM)
Ohio River
KY • US
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The Ohio River (Seneca: Ohi:yo') is a 981-mile-long (1,579 km) river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from Pittsburgh, Pennsylvania, to its mouth on the Mississippi River at Cairo, Illinois. It is the third largest river by discharge volume in the United States and the largest tributary by volume of the Mississippi River. It is also the sixth oldest river on the North American continent. The river flows through or along the border of six states, and its drainage basin includes parts of 14 s...
981.1 mi total
1 sections
2 access points
0 camps
0 rapids
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Click any point for details. Sections without stored geometry are drawn as straight put-in → take-out lines — actual courses follow the river.