Fast Facts
- Begins in Pittsburgh, PA; formed by the confluence of the Allegheny and Monongahela rivers
- Ends in Cairo, IL; emptying into the Mississippi river
- 981 miles long
- Average depth is ~24 feet
- Deepest point is 132 feet (Louisville, KY area)
- Widest point is 1 mile wide at the Smithland Dam
- 20 dams along the river
- 49 power generating facilities along the river
- Over 230 million tons of cargo traverse the river annually
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States & Major Cities Along River
- Pennsylvania (Pittsburgh)
- West Virginia (Huntington)
- Ohio (Cincinnati)
- Kentucky (Louisville)
- Indiana (Evansville)
- Illinois
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