Overview
Castle Rock Lake Map
Fishing Regulations
Special Fishing regulations: This lake has special fishing regulations that differ from statewide or border water regulations for those species identified below and take precedence. Regulations listed below are currently in place. Visit the fishing regulations page for links to upcoming regulations for specific lakes.
Special Waterbody Regulations
- Hook and line fishing is open all year for fish species except muskellunge, lake sturgeon, trout, paddlefish and threatened or endangered species. Motor Trolling is allowed with up to 3 hooks, baits, or lures, per angler.
Special Species Regulations
- Bluegill: See Panfish.
- Lake sturgeon: Closed. No fishing allowed.
- Muskellunge and hybrids: May 3, 2025 to December 31, 2025: The minimum length limit is 50” and the daily bag limit is 1
- Northern pike: Open all year: The minimum length limit is 32” and the daily bag limit is 1
- Largemouth bass and smallmouth bass: Open all year: The minimum length limit is 14” and the daily bag limit is 5
- Largemouth bass: See Largemouth and Smallmouth Bass.
- Smallmouth bass: See Largemouth and Smallmouth Bass.
- Paddlefish: Closed. No fishing allowed.
- Rock, Yellow, and White Bass: Open all year: No minimum length limit and the daily bag limit is unlimited
- Rough fish: Open all year: No minimum length limit and the daily bag limit is unlimited
- Round goby: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Ruffe: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Shovelnose sturgeon: Closed. No fishing allowed.
- Trout and salmon: See Trout regulations layer.
- White perch: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
- Bowfin: See Rough Fish.
- Channel catfish: See Catfish.
- Crappies: See Panfish.
- Flathead catfish: See Catfish.
- Hybrid, Striped, Yellow, and White Bass: See Rock, Yellow and White Bass.
- Longnose gar: See Rough Fish.
- Sauger and hybrids: See Walleye, Sauger, and Hybrids.
- Shortnose gar: See Rough Fish.
- Urban waters gamefish: This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
- Walleye: See Walleye, Sauger, and Hybrids.
- Catfish: Open all year: No minimum length limit and the daily bag limit is 10
- Bullheads: Open all year: No minimum length limit and the daily bag limit is unlimited
- Walleye, Saugers, and Hybrids: Open all year: The minimum length is 15”, but walleye, sauger, and hybrids from 20” to 28” may not be kept, and only 1 fish over 28” is allowed. The daily bag limit is 3
- Panfish: Open all year: No minimum length limit and the daily bag limit is 25
- Cisco and whitefish: Open all year: No minimum length limit and the daily bag limit is 10
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Fish Species
Castle Rock Lake Bluegill abundance
Average range for similar lakes
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.| Survey Year | Largest Fish (in) |
|---|---|
| 2021 | 9 |
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.Castle Rock Lake Crappie abundance
Average range for similar lakes
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.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.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.Castle Rock Lake Muskellunge abundance
Average range for similar lakes
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.| Survey Year | Largest Fish (in) |
|---|---|
| 2021 | 48 |
Castle Rock Lake Northern pike abundance
Average range for similar lakes
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.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.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.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.Castle Rock Lake Smallmouth bass abundance
Average range for similar lakes
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.| Survey Year | Largest Fish (in) |
|---|---|
| 2021 | 18 |
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.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.Castle Rock Lake Walleye abundance
Average range for similar lakes
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.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.
