Baldwin Lake is a Reservoir in Randolph, Illinois.

Have you fished Baldwin Lake? Help your fellow anglers out by giving a fishing report, some fishing tips or general information about Baldwin Lake.

Baldwin Lake is a 2,018-acre (817 ha) artificial lake which spans part of the border between Randolph County, Illinois and St. Clair County, Illinois.

The lake is part of the Kaskaskia River State Fish and Wildlife Area, operated by the Illinois Department of Natural Resources, and it is adjacent to, but not part of, the Kaskaskia River. Its elevation may fluctuate with powerplant operations, but averages 423 feet (129 m) above sea level.

While Dynegy continues to own Baldwin Lake, they have transferred the operating rights over much of the lake (except that part closest to the power plant, which is closed to the public for security reasons) to the state of Illinois, which manages the lake for sport fishing. As with many power plant lakes, the lake is stocked with fish that are tolerant of the warm waters discharged from the power plant's boilers, such as largemouth bass and crappie.