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Lake Information

County: LaSalle

Acreage: 18

Average Depth: 6 feet

Recreational Amenities

Boat Fishing? Yes, Electric Motor Only

Boat Ramps? Yes

Boat Rental? No

Skiing? No

Swimming? No

Picnicking? Yes

Camping? No

  Trout stocked in spring

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There are no zebra mussels in this lake.

Lake Status Summary  ( Full PDF Report )

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Fish Status


Very Good

The Bluegill population historically was a low-density population that produced few large individuals. Stockings of Bluegill were done to boost bluegill numbers of post summer fish kills. The 2023 survey showed similar results to the 2022 survey, with good numbers of fish in the 6–8-inch range. The increase in population numbers will help to feed the dense Largemouth Bass population, but also help to control Largemouth and Yellow Perch reproduction.



Good numbers of fish in the 12-24 inch range, with good chance at fish larger than 25 inches, are in the lake. Channel Catfish are stocked annually.



Black Crappie are present in Lake Mendota, but are in low density. The few Black Crappie that do show up in samples have been of quality size and in good condition. Anglers have reported some good catches in the past year.


Very Good

The 2023 sample showed a diverse population. Total catch per unit effort (CPUE) was similar to the 2022 survey. Fish in the 15-20 size group have not rebounded to pre-2019 numbers.



Rainbow Trout are stocked in the Spring only.

Location: Lake Mendota is a small 18-acre lake located on just off Illinois Route 251 in Mendota Illinois.

Description: Lake Mendota is owned by the city of Mendota and the Fishery is managed by the Illinois Department of Natural Resources Fishery Division. Lake Mendota has one boat ramp, but the lake has a no-gas-motor regulation. A handicapped fishing pier, picnic area, shelters and restrooms are available for use at the lake.

Additional Lake Information: All Fish: 2 Pole and Line Fishing Only
Large or Smallmouth Bass: 1 fish over 15 inches and 2 fish under 12 inches daily limit
Bluegill or Redear Sunfish: Statewide regulations
Channel Catfish: 6 fish daily limit
White, Black, or Hybrid Crappie: Statewide regulations

Contact Information:
Mendota Park District
IDNR Fisheries Biologist, David Wyffels