The Wabash River / ˈwɔːbæʃ / (French: Ouabache) is a 503 - mile - long (810 km) river in the Midwestern United States that flows southwest from near the Indiana border in northwest Ohio, across northern and central Indiana to southern Illinois, where it forms the Illinois - Indiana border before draining into the Ohio River, of which it is the largest northern tributary. From the dam near Huntington, Indiana, to its terminus at the Ohio River, the Wabash flows freely for 411 miles (661 km). Its watershed drains most of Indiana.
where does the wabash river begin and end
from near the Indiana border in northwest Ohio, across northern and central Indiana to southern Illinois, where it forms the Illinois - Indiana border before draining into the Ohio River