LaSalle Cooling Lake

Info / LaSalle County

Location 2058 acres

LaSalle Lake State Fish and Wildlife Area, is located in LaSalle County approximately 8 miles southeast of Marseilles or 8 miles southwest of Seneca on County Road 6. Anglers can use the following number for updates on lake conditions as it impacts boat fishing: call 815-357-1608.

Fishing Outlook

Recent Stocking History
2025 Blue Catfish Advanced Fingerling (4 - 7") 20580
2025 Bluegill Fingerling (1 - 3") 121560
2025 Largemouth Bass Advanced Fingerling (4 - 7") 4757
2025 Largemouth Bass Fingerling (1 - 3") 58291
2025 Smallmouth Bass Advanced Fingerling (4 - 7") 1398

Contact

Illini State Park
815-795-2448
Caputo, Brennan
IDNR Fisheries Biologist
Send Message
630-360-4181

Description

LaSalle Lake is a perched cooling lake impounding 2,058 surface acres of water with 100 percent of the shoreline comprised of rock rip–rapped dikes. The average depth of the lake is 15 feet, but there are excavated areas within the lake up to 70 feet deep. Caution should be used on windy days as LaSalle Lake may become extremely rough. For safety, please observe wind warning lights. There is usually a 20 degree water temperature difference between the discharge and the intake. There is no horsepower limitation for boats; the maximum speed is 40 mph except in designated “no wake” areas; a working gasoline engine is required as the main propulsion unit; boats under 14 feet are not recommended. The lake has a concrete three-lane boat ramp and a paved parking lot large enough for 140 car/trailer parking. The boat launch is ADA accessible. Zebra mussels have been found in LaSalle Lake, therefore boaters should take appropriate measures upon departure to prevent spreading.

Fishery History

The fishery is managed by annual species-specific surveys and stocking. LaSalle Lake receives an annual stocking of Largemouth Bass, Smallmouth Bass, Hybrid Striped Bass, and Blue Catfish.

Site Regulations

Anglers can use the following number for updates on lake conditions as it impacts boat fishing. The number to call is 815-357-1608. The Lake is scheduled to open on March 15th each year. Hours are from 6:00 AM to sunset 7 days a week. The lake closes on October 15. There is no horsepower limitation for boats; the maximum speed is 40 mph except in designated “no wake” areas.

Site-Specific Fishing Regulations:

  • Recreational Use Restriction: Waterfowl Refuge or Hunting Area (see above)
  • All Fish: 2 pole and line fishing only and each pole must not have more than 2 hooks or lures attached while fishing
  • Large or Smallmouth Bass: 18 inch Minimum Length Limit; 1 Fish Daily Harvest Limit
  • Striped, White, or Hybrid Striped Bass: 10 Fish Daily Harvest Limit with no more than 3 fish greater than or equal to 17 inches

Additional Information

Planning to eat your catch?  Fish Consumption Advisory information can be found here: Fish Consumption Advisory Page

Bath Map

Bath Map: LaSalle Cooling Lake Bath Map:  LaSalle Cooling Lake