'It flows from Pittsburgh to Cairo, Illinois, where it empties into the Mississippi River'
the Ohio River
U.S. RIVERS: It flows from Pittsburgh to Cairo, Illinois, where it empties into the Mississippi River
It flows from Pittsburgh to Cairo, Illinois, where it empties into the Mississippi River
It flows from Pittsburgh to Cairo, Illinois, where it empties into the Mississippi River
U.S. RIVERS
the Ohio River
U.S. RIVERS