Castle Rock Lake

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

• Round goby: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
• Lake sturgeon: Closed. No fishing allowed.
• Cisco and whitefish: Open all year: No minimum length limit and the daily bag limit is 10
• 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
• White perch: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
• Trout and salmon: See Trout regulations layer.
• Shovelnose sturgeon: Closed. No fishing allowed.
• Ruffe: Open all year: The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office
• Urban waters gamefish: This waterbody is not considered an urban water, Urban Waters Gamefish regulations do not apply.
• Shortnose gar: See Rough Fish.
• Sauger and hybrids: See Walleye, Sauger, and Hybrids.
• Longnose gar: See Rough Fish.
• Hybrid, Striped, Yellow, and White Bass: See Rock, Yellow and White Bass.
• Flathead catfish: See Catfish.
• Crappies: See Panfish.
• Channel catfish: See Catfish.
• Bowfin: See Rough Fish.
• Bluegill: See Panfish.
• Walleye: See Walleye, Sauger, and Hybrids.
• 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