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The Ohio River 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 western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illinois. It is the third largest river by discharge volume in the United ...
The Mississippi River[b]is the primary riverand second-longest riverof the largest drainage basin in the United States. [c][15][16]From its traditional source of Lake Itascain northern Minnesota, it flows generally south for 2,340 miles (3,766 km)[16]to the Mississippi River Deltain the Gulf of Mexico.
This is a list of locks and dams of the Ohio River, which begins at the confluence of the Allegheny and Monongahela rivers at The Point in Pittsburgh, Pennsylvania and ends at the confluence of the Ohio River and the Mississippi River, in Cairo, Illinois . A map and diagram of U.S. Army Corps of Engineers operated locks and dams on the Ohio River.
New Albany and Louisville. 1912. 38°16′57″N 85°48′05″W. / 38.28250°N 85.80139°W / 38.28250; -85.80139. McAlpine Locks and Dam (Only to Shippingport Island, not all the way across river) New Albany and Louisville. ( Falls of the Ohio) 1830. 38°16′41″N 85°47′25″W / .
The Mississippi River System, also referred to as the Western Rivers, is a mostly riverine network of the United States which includes the Mississippi River and connecting waterways. The Mississippi River is the largest drainage basin in the United States. [3] In the United States, the Mississippi drains about 41% of the country's rivers.
The Lower Mississippi River is the portion of the Mississippi River downstream of Cairo, Illinois. From the confluence of the Ohio River and the Middle Mississippi River at Cairo, the Lower flows just under 1000 miles (1600 km) to the Gulf of Mexico. [1] It is the most heavily travelled component of the Mississippi River System.
Government. County government. Subdivisions. cities, towns, unincorporated communities, census designated place. There are 82 counties in the U.S. state of Mississippi. Mississippi is tied with Arkansas for the most counties with two county seats, at 10. Mississippi's postal abbreviation is MS and its FIPS state code is 28 .
Subregion Map 0801 Lower Mississippi–Hatchie subregion: The Mississippi River Basin from the confluence of the Ohio River to and including the Horn Lake Creek Basin, but excluding the drainage west of the West-Bank Levee along the Mississippi River. Arkansas, Kentucky, Mississippi, Missouri, and Tennessee. 11,000 sq mi (28,000 km 2) HUC0801: 0802