where does the ohio river and the mississippi river meet
Cairo, Illinois
title: Mississippi River System text: Missouri River is the longest river on the North American continent. The Missouri River was one of the main routes for the watershed expansion of the United States during the 19th century. The Ohio River runs 981 miles (1582 km) long, starting at the meeting of the Allegheny River and the Monongahela River in Pittsburgh, Pennsylvania; ending in Cairo, Illinois, where it then flows into the Mississippi. The Ohio River flows through six states, including, Illinois, Indiana, Ohio, Kentucky, Pennsylvania and West Virginia. The river is a location with the capacity to provide enough water for over five million people. title: Ohio River text: course forms the northern borders of West Virginia and Kentucky; and the southern borders of Ohio, Indiana and Illinois, until it joins the Mississippi River at the city of Cairo, Illinois. Where the Ohio joins the Mississippi is the lowest elevation in the state of Illinois, at . The Ohio River, which flows westward from Pittsburgh, Pennsylvania, to Cairo, Illinois, is the largest tributary, by volume, of the Mississippi River in the United States. At the confluence, the Ohio is considerably bigger than the Mississippi. Measured by long-term mean discharge in cubic feet per second and cubic meters per second, title: Ohio River text: the Ohio River, which would have included parts of present-day Eastern Kentucky, Virginia and West Virginia. Pre-Columbian inhabitants of eastern North America considered the Ohio part of a single river continuing on through the lower Mississippi. The combined Allegheny-Ohio river is long and carries the largest volume of water of any tributary of the Mississippi. The Indians and early explorers and settlers of the region also often considered the Allegheny to be part of the Ohio. The forks (the confluence of the Allegheny and Monongahela rivers at what is now Pittsburgh) were considered a strategic military location. The river had title: Ohio River text: Ohio River The Ohio River, which flows westward from Pittsburgh, Pennsylvania, to Cairo, Illinois, is the largest tributary, by volume, of the Mississippi River in the United States. At the confluence, the Ohio is considerably bigger than the Mississippi (by (long-term mean discharge, Ohio at Cairo: 281,500 cu ft/s (7,960 m/s); Mississippi at Thebes: 208,200 cu ft/s (5,897 m/s)) and, thus from a hydrological perspective, is the main stream of the whole river system. The river flows through or along the border of six states, and its drainage basin includes parts of 15 states. Through its largest tributary, the Tennessee title: Ohio River text: beginning in the 1950s. The Ohio River is formed by the confluence of the Allegheny and Monongahela rivers at Point State Park in Pittsburgh, Pennsylvania. From there, it flows northwest through Allegheny and Beaver counties, before making an abrupt turn to the south-southwest at the West Virginia–Ohio–Pennsylvania triple-state line (near East Liverpool, Ohio; Chester, West Virginia; and Ohioville, Pennsylvania). From there, it forms the border between West Virginia and Ohio, upstream of Wheeling, West Virginia. The river then follows a roughly southwest and then west-northwest course until Cincinnati, before bending to a west-southwest course for most of its length. The