City Water, Light & Power owns and manages Lake Springfield and its surrounding 57 miles of shoreline, which includes over 735 residential sites, eight public parks, and several public boat docks and launches. The lake and lake-area parks are host to some 600,000 recreational visitors each year.
Lake Springfield's primary purpose is to serve as the source of drinking water for the city of Springfield and several nearby communities. In addition, it is a major central Illinois recreation center, as well as the source of condenser cooling water for the utility's lakeshore power plant complex.
The average depth of the lake is 12.5 feet and the maximum depth is 27 feet near the water intake tower just south of the Spaulding Dam gates. The lake's current storage capacity is about 16.7 billion gallons and its drainage area is 265 square miles.