Ohio River 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,
Big Rib River at Lake Chelsea. He left his partner at the rapids to carry some supplies and was never seen again. Big Rib River The Big Rib River is a river in central Wisconsin. It originates in northeastern Taylor County at Rib Lake, and flows into Marathon County where it joins the Wisconsin River. "Rib River" is a translation of the Native American name. The Big Rib River flows through Rib Falls then to Marathon City, before it converges into the Wisconsin River at the northeast face of Rib Mountain. The Dells of the Big Rib River, below Goodrich, are believed to