The Ohio River watershed is a vast region
Population | 25 million
The Ohio River runs 981 miles from Pittsburgh, Pennsylvania, to Cairo, Illinois, where it joins the Mississippi.
Ohio River Watershed
The Ohio River watershed covers 205,000 square miles across 15 states: Pennsylvania, Ohio, Kentucky, West Virginia, Indiana, Illinois, Tennessee, New York, Virginia, Maryland, Georgia, Mississippi, Alabama, North Carolina and South Carolina.
Water Pollution
The Ohio is commonly cited as the most polluted river in the United States.
Fresh Water Source
The river supplies about five million people with drinking water.
