Rock Lake

Details

DNR lake ID

11032400

County

Cass

Surface area

261 acres

Maximum depth

17 feet

Shallow water (littoral) area

235 acres, 90% of the lake

Shoreline

3.4 miles

Average water clarity

7.0 feet (Secchi disk, 1 readings)

Nearest town (DNR)

Casino

Latest DNR fish survey

August 2025, standard survey

Surveys on record

3, since 1980

Game fish caught in the 2025 survey

pumpkinseed 71, bluegill 47, yellow perch 46, black crappie 44, northern pike 37, hybrid sunfish 5, largemouth bass 2

Fish species recorded

black crappie, bluegill, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, rock bass, walleye, yellow perch, and 6 other species

Stocked in 2023

black crappie adults (20); bluegill sunfish adults (12); largemouth bass adults (145)

Stocked in 2022

walleye fry (200,000)

Stocked in 2019

walleye fry (230,000)

Rock Lake Public Water Access Site

trailer launch, concrete slab ramp, 1 dock, 6 trailer spaces, toilet, run by DNR Division of Forestry

Fish consumption

Follow the statewide guidelines; fish from this lake have not been tested

Size

100 to 499 acres

Deepest point

15 to 29 feet

Public access

Yes

Stocked in the last 3 years

Yes

Sources

• Minnesota DNR LakeFinder
  Checked September 24, 2026
• Minnesota DNR Public Water Access Sites
  Checked September 24, 2026

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.