Powerton Lake is a 1,426-acre cooling reservoir located in Tazewell County, Illinois, about two miles southwest of Pekin. The lake was constructed in 1971 to provide cooling water for a nearby power plant. Its rectangular shape features very little structure, with a maximum depth of 18 feet and an average depth of 8 feet.

A double concrete boat ramp on the south side of the lake along Manito Blacktop provides access, with parking for 90 vehicles. There are no horsepower restrictions for boats, but use is limited to fishing and waterfowl hunting only. Kayaks and canoes are not permitted.

The lake's warm water from the power plant discharge creates unique conditions. Water temperatures can range from 40°F to 60°F in winter, promoting fast fish growth but negatively impacting reproduction. This warmwater discharge area is a prime fishing spot, especially in early January.

Powerton Lake hosts a variety of fish species, including blue catfish, smallmouth bass, largemouth bass, and hybrid striped bass. The lake is known for trophy-sized blue catfish, with some reaching 50 pounds. Alligator gar up to 60 inches and 65 pounds have also been recorded.

The lake is closed to all unauthorized entry during regular Canada goose and duck seasons. Outside of these periods, summer hours are 6 AM to 8 PM (May 1 - Sept. 30), while winter hours are 8 AM to 4 PM (Oct 1 - April 30).

Facilities are limited, with no food, fuel, or services on site. The area provides basic amenities such as parking, fencing, and toilets. Wildlife enthusiasts may spot various bird species, including diving ducks, mallards, and bald eagles.

Anglers should note the daily harvest limits for catfish species implemented in 2019 to protect larger specimens while maintaining a sustainable fishery.