Rock Lake

Details

DNR lake ID

86018200

County

Wright

Surface area

183 acres

Maximum depth

37 feet

Mean depth

14 feet

Shallow water (littoral) area

99 acres, 54% of the lake

Shoreline

3.0 miles

Average water clarity

3.2 feet (Secchi disk, 2 readings)

Latest DNR fish survey

August 2025, targeted survey

Surveys on record

8, since 1985

Game fish caught in the 2025 survey

bluegill 1,673, largemouth bass 168, green sunfish 58, hybrid sunfish 22, yellow perch 9, pumpkinseed 5, white crappie 2, black crappie 2

Fish species recorded

black crappie, bluegill, crappie, green sunfish, hybrid sunfish, largemouth bass, northern pike, pumpkinseed, walleye, white crappie, yellow perch, and 11 other species

Stocked in 2024

walleye yearlings (942); walleye fry (50,967); walleye fingerlings (77); walleye yearlings (21)

Stocked in 2022

walleye fingerlings (3,074)

Stocked in 2020

walleye yearlings (1,076); walleye fingerlings (120)

Stocking years on record

5 of the last 10 (2016 to 2024)

Rock Lake Public Water Access Site

trailer launch, concrete slab ramp, 1 dock, 10 trailer spaces, run by DNR Division of Parks and Trails

Infested waters list

Eurasian watermilfoil

Fish consumption

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

Size

100 to 499 acres

Deepest point

30 to 59 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.