Lake Springfield
 Lake Springfield is a 4260 acre (17.2 km²) reservoir located in the city of Springfield Illinois southeast of downtown. It is 560 feet (171 m) above sea level. It was formed in 1931-1935 by building Spaulding Dam across Sugar Creek a tributary of the Sangamon River.The lake was created at a cost of $2.5 million in 1930s $USD as a source of water for Springfield and to provide coolant for the City Water Light & Power coal-fired electrical generating plant.