<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (March 2017) (Learn how and when to remove this template message) </Td> </Tr> <Table> <Tr> <Td_colspan="2"> Ohio River </Td> </Tr> <Tr> <Td_colspan="2"> The widest point on the Ohio River is just north of downtown Louisville, where it is one mile (1.6 km) wide </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> States </Th> <Td> Pennsylvania, Ohio, West Virginia, Kentucky, Indiana, Illinois </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Tributaries </Td> </Tr> <Tr> <Td> - left </Td> <Td> Little Kanawha River, Kanawha River, Guyandotte River, Big Sandy River, Little Sandy River, Licking River, Kentucky River, Salt River, Green River, Cumberland River, Tennessee River </Td> </Tr> <Tr> <Td> - right </Td> <Td> Beaver River, Little Muskingum River, Muskingum River, Little Hocking River, Hocking River, Shade River, Scioto River, Little Miami River, Great Miami River, Wabash River </Td> </Tr> <Tr> <Th> Cities </Th> <Td> Pittsburgh, PA, East Liverpool, OH, Wheeling, WV, Parkersburg, WV, Huntington, WV, Ashland, KY, Cincinnati, OH, Louisville, KY, Owensboro, KY, Evansville, IN, Henderson, KY, Paducah, KY, Cairo, IL </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Source </Th> <Td> Allegheny River </Td> </Tr> <Tr> <Td> - location </Td> <Td> Allegany Township, Potter County, Pennsylvania </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 2,240 ft (683 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 41 ° 52 ′ 22" N 77 ° 52 ′ 30" W ﻿ / ﻿ 41.87278 ° N 77.87500 ° W ﻿ / 41.87278; - 77.87500 </Td> </Tr> <Tr> <Th> Secondary source </Th> <Td> Monongahela River </Td> </Tr> <Tr> <Td> - location </Td> <Td> Fairmont, West Virginia </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 880 ft (268 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 39 ° 27 ′ 53" N 80 ° 09 ′ 13" W ﻿ / ﻿ 39.46472 ° N 80.15361 ° W ﻿ / 39.46472; - 80.15361 </Td> </Tr> <Tr> <Th> Source confluence </Th> <Td> </Td> </Tr> <Tr> <Td> - location </Td> <Td> Pittsburgh, Pennsylvania </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 730 ft (223 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 40 ° 26 ′ 32" N 80 ° 00 ′ 52" W ﻿ / ﻿ 40.44222 ° N 80.01444 ° W ﻿ / 40.44222; - 80.01444 </Td> </Tr> <Tr> <Th> Mouth </Th> <Td> Mississippi River </Td> </Tr> <Tr> <Td> - location </Td> <Td> at Cairo, Illinois / Ballard County, Kentucky </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 290 ft (88 m) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 36 ° 59 ′ 12" N 89 ° 07 ′ 50" W ﻿ / ﻿ 36.98667 ° N 89.13056 ° W ﻿ / 36.98667; - 89.13056 Coordinates: 36 ° 59 ′ 12" N 89 ° 07 ′ 50" W ﻿ / ﻿ 36.98667 ° N 89.13056 ° W ﻿ / 36.98667; - 89.13056 </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Length </Th> <Td> 981 mi (1,579 km) </Td> </Tr> <Tr> <Th> Basin </Th> <Td> 189,422 sq mi (490,601 km) </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> for Cairo, Illinois </Td> </Tr> <Tr> <Td> - average </Td> <Td> 281,000 cu ft / s (7,957 m / s) (1951--80) </Td> </Tr> <Tr> <Td> - max </Td> <Td> 1,850,000 cu ft / s (52,386 m / s) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Ohio River basin </Td> </Tr> </Table> <Tr> <Td_colspan="2"> Ohio River </Td> </Tr>

Where does the ohio river begin and end
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