River Facts

What are the major causes of pollution in the Ohio River?

Nonpoint source pollution from urban runoff, agricultural activities, and abandoned mines is a major cause of water pollution in the Ohio River.

What's the widest part of the Ohio River?

The widest point along the Ohio River is approximately 1 mile at the Smithland Dam.

What's the average depth of the Ohio River?

The average depth of the Ohio River is approximately 24 feet.

How many fish species live in the Ohio River?

Approximately 150 species of fish have been collected from the Ohio River.

How many people live in the Ohio River Basin?

More than 25 million people, 10% of the U.S. population, live in the Ohio River Basin.

How many people get their water from the Ohio River?

The Ohio River is a source of drinking water for more than five million people.

How long is the Ohio River and what does its features entail?

The Ohio River is 981 miles (1582 km) 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.

What towns are located along the Ohio River?

For a list of towns along the Ohio River, click here: Towns along the Ohio River

What states does the Ohio River flow through?

The Ohio River flows through or borders six states: Illinois, Indiana, Kentucky, Ohio, Pennsylvania, and West Virginia.