Lake Charleston is a reservoir in Coles County, Illinois.

[2] Much of the lake is surrounded by city parkland, and a lakeside circular trail is 3.6 miles (6.0 km) in length.

Power boats are allowed, but the lake enforces a no-wake rule.

The reservoir is fed by the adjacent Embarras River, which was dammed by engineers to create the reservoir.

[2] The reservoir is served by Exit 119 on Interstate 70 in nearby Cumberland County.