Rock Lake
Size
371ac
Boat Launch
Yes
Carry-in Launch
No
Toilet
No
Boat Dock
Yes
Species in Rock Lake
Bluegill
Bluegill
Channel catfish
Channel catfish
Crappie
Crappie
Northern pike
Northern pike
Perch
Perch
Walleye
Walleye

Rock Lake Overview

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Fish Species

Bluegill
fish
No survey data
Abundance (CPUE)
No survey data
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
No Survey Data
Channel catfish
fish
No survey data
Abundance (CPUE)
No survey data
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
No Survey Data
Crappie
fish
5-13 in
Length Range
10 in
Length Range
2022
Surveyed
Abundance (CPUE)
Below Avg.
2022
Surveyed
Trapnet
Catch Method
3.22
0Statewide Range10.56

Rock Lake Crappie abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
Northern pike
fish
No survey data
Abundance (CPUE)
No survey data
Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
No Survey Data
Perch
fish
6-10 in
Length Range
9 in
Length Range
2022
Surveyed
Abundance (CPUE)
Below Avg.
2022
Surveyed
Gillnet
Catch Method
8.67
0Statewide Range43.55

Rock Lake Perch abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
Walleye
fish
8-29 in
Length Range
17 in
Length Range
2022
Surveyed
Abundance (CPUE)
Above Avg.
2022
Surveyed
Gillnet
Catch Method
9.33
0Statewide Range16.93

Rock Lake Walleye abundance

Average range for similar lakes

Understanding Abundance

Abundance ratings are based on Catch Per Unit Effort (CPUE) measurements conducted by the MN DNR, and represent a snapshot of a species population at a given point in time.

Source: Minnesota Department of Natural Resources. Survey cadence may vary by state and water body.
Species Lengths
Trophy Potential
This lake has a history of supporting trophy sized walleye based on past surveys.
Survey YearLargest Fish (in)
202228