Walleye lake, Northern pike lake, Bass lake, Crappie lake, Sunfish lake

Thunder Lake

Lake-specific eating adviceZebra musselsPublic accessStocked 2025

Thunder Lake is a 1,347-acre lake in Cass County, 95 feet at its deepest. The DNR last surveyed its fish in 2025. Recorded species include walleye, northern pike, largemouth bass, smallmouth bass and crappie.

Details

DNR lake ID
11006200
County
Cass
Surface area
1,347 acres
Maximum depth
95 feet
Mean depth
37 feet
Shallow water (littoral) area
226 acres, 17% of the lake
Shoreline
15.9 miles
Average water clarity
17.5 feet (Secchi disk, 10 readings)
Latest DNR fish survey
September 2025, targeted survey
Surveys on record
21, since 1980
Game fish caught in the 2025 survey
walleye 3
Fish species recorded
black crappie, bluegill, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, smallmouth bass, sunfish, walleye, yellow perch, and 28 other species
Stocked in 2025
walleye fingerlings (11,752)
Stocked in 2023
walleye fingerlings (9,800)
Stocked in 2021
walleye fingerlings (9,040)
Stocking years on record
5 of the last 10 (2017 to 2025)
Big Thunder Lake Public Water Access Site
trailer launch, concrete slab ramp, 1 dock, 15 trailer spaces, run by DNR Division of Parks and Trails
Infested waters list
Eurasian watermilfoil, starry stonewort, zebra mussel
Eating advice, general populations
cisco: all sizes - 2 servings/week
Size
500 to 1,999 acres
Deepest point
60 feet or more
Public access
Yes
Stocked in the last 3 years
Yes
Lake-specific eating advice
Yes

Sources

Survey catches show what DNR nets and electrofishing found on the survey date, not how the fishing is today. Check the current regulations and the Department of Health advice before you keep fish, and confirm access conditions before you tow a boat.

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