It is the third largest river by discharge volume in the United States and the largest tributary by volume of the north-south flowing Mississippi River, which divides the eastern from western United States. [ 8 ] It is also the sixth oldest river on the North American continent.

The Ohio River is located at the boundary of the Midwestern and Southern United States, flowing southwesterly 981 miles long. Technically, the river’s formation started between 2.5 and 3 million years ago, marking the occurrence of the earliest ice ages.

Jan 6, 2025 · Ohio River, major river artery of the east-central United States. Formed by the confluence of the Allegheny and Monongahela rivers at Pittsburgh, it flows northwest out of Pennsylvania, then in a general southwesterly direction to join the Mississippi River at Cairo, Illinois (see photograph),

Jul 19, 2021 · The Ohio River is naturally a shallow river that has been artificially deepened by constructing a series of dams. The river has a width of less than 0.8km between the cities of Pittsburgh and Wheeling and a width of 1.6km from the city of Cincinnati to Louisville.

The Ohio River is 981 miles long, starting at the confluence of the Allegheny and the Monongahela Rivers in Pittsburgh, Pennsylvania, and ending in Cairo, Illinois, where it flows into the Mississippi River. The Ohio River flows through or borders six states: Illinois, Indiana, Kentucky, Ohio, Pennsylvania and West Virginia.

With the 1,200-mile extension of the Lewis and Clark National Historic Trail in May 2019, a fourth major North American river became an official part of the Trail – the Ohio River, joining the Mississippi, Missouri, and Columbia Rivers.

The Ohio River is the one of the most important tributaries to the Mississippi River. It is 981 miles long and it forms boundaries for the states of Ohio, Kentucky, Illinois, Indiana, and West Virginia before finally going to its headwaters in Pennsylvania.

The Ohio River’s waters, buzzing with life and industry, are steeped in a rich history and hold an iconic place in the heart of North America. First discovered, navigated, and utilized by prehistoric Native American tribes, its name comes from the Iroquois word “O …

The Ohio River is the largest tributary by volume of the Mississippi River. It is approximately 981 miles (1,579 km) long and is located in the eastern United States.

The Ohio River runs through largely urbanized and industrialized landscapes, brownfields, and main river channels managed largely for commercial interests. The Ohio runs through or along the border of six states, and its drainage basin includes parts of 14 states.