Heidecke Lake State Fish and Wildlife Area

Heidecke Lake State Fish and Wildlife Area is an Illinois state park on 1,300 acres (526 ha) in Grundy County, Illinois, United States. It is an artificial cooling pond originally excavated to enable the operation of the now defunct Collins Generating Station.

Heidecke Lake State Fish and Wildlife Area
IUCN category IV (habitat/species management area)
Map of the U.S. state of Illinois showing the location of Heidecke Lake State Fish and Wildlife Area Show map of Illinois Heidecke Lake State Fish and Wildlife Area (the United States) Show map of the United States
Location	Grundy County, Illinois, U.S.
Nearest city	Morris, Illinois
Coordinates	41°22′00″N 88°20′09″W[1]
Area	1,300 acres (526 ha)
Elevation	495 feet (151 m)
Established	1978
Governing body	Illinois Department of Natural Resources
Website	www2.illinois.gov/dnr/Parks/Pages/HeideckeLake.aspx