Water use in the Western Lake Michigan Drainages

Public suppliers provide about 371 million gallons of water per day (Mgal/d), of which 69 Mgal/d is from ground-water sources. Rural domestic users obtain about 21 Mgal/d, of which 13 Mgal/d is from ground-water sources. Lakes Michigan and Winnebago provide most of the surface-water supply (Horn, written communication, 1997).