how did they change the flow of the chicago river
Chicago River Finally, in 1900, the Sanitary District of Chicago, then headed by William Boldenweck, completely reversed the flow of the Main Stem and South Branch of the river using a series of canal locks, increasing the river's flow from Lake Michigan and causing it to empty into the newly completed Chicago Sanitary and Ship Canal. In 1999, this system was named a "Civil Engineering Monument of the Millennium" by the American Society of Civil Engineers (ASCE).[6] Before this time, the Chicago River was known by many local residents of Chicago as "the stinking river" because of the massive amounts of sewage and pollution that poured into the river from Chicago's booming industrial economy.
Wabash River The Wabash River /ˈwɔːbæʃ/ (French: Ouabache) is a 503-mile-long (810 km)[2] 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.