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

Overview

Rock Lake Map

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Fish Species

Bluegill
fish
No survey data
Abundance (CPUE)
No abundance 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
21-24 in
Length Range
23 in
Length Range
2018
Surveyed
Abundance (CPUE)
Unknown
2018
Surveyed
Gillnet
Catch Method
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
2014
Jun
2018
Jul
Crappie
fish
8-29 in
Length Range
17 in
Length Range
2022
Surveyed
Abundance (CPUE)
Below Avg.
2022
Surveyed
Trapnet
Catch Method
3.2222
0Statewide Range10.4166

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
2018
Jul
2022
Jul
Northern pike
fish
15-18 in
Length Range
17 in
Length Range
2014
Surveyed
Abundance (CPUE)
Unknown
2014
Surveyed
Gillnet
Catch Method
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
2002
Jun
2014
Jun
Perch
fish
8-29 in
Length Range
17 in
Length Range
2022
Surveyed
Abundance (CPUE)
Below Avg.
2022
Surveyed
Gillnet
Catch Method
8.6667
0Statewide Range43.5833

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
2018
Jul
2022
Jul
Walleye
fish
8-29 in
Length Range
17 in
Length Range
2022
Surveyed
Abundance (CPUE)
Above Avg.
2022
Surveyed
Gillnet
Catch Method
9.3333
0Statewide Range16.9168

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
2018
Jul
2022
Jul
Trophy Potential
This lake has a history of supporting trophy sized walleye based on past surveys.
Survey YearLargest Fish (in)
202228