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Fishing Regulations for Thompson Lake - Pepin County

General Waterbody Restrictions
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.

Fishing Regulations
NOTE: Regulations listed below may not reflect fish species actually found in the lake. See Thompson Lake's WI DNR Lake Page for more information on this lake's characteristics.
Fish Season Regulation
Bullheads Open All Year No minimum length limit and the daily bag limit is unlimited.
Catfish Open All Year No minimum length limit and the daily bag limit is 10.
Cisco And Whitefish Open All Year No minimum length limit and the daily bag limit is 10.
Lake Sturgeon Closed No fishing allowed.
Largemouth Bass And Smallmouth Bass Open All Year The minimum length limit is 14" and the daily bag limit is 5.
Muskellunge And Hybrids May 25, 2024 to December 31, 2024 The minimum length limit is 40" and the daily bag limit is 1.
Northern Pike Open All Year No minimum length limit and the daily bag limit is 5.
Paddlefish Closed No fishing allowed.
Panfish Open All Year No minimum length limit and the daily bag limit is 25.
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 See specific regulations https://dnr.wisconsin.gov/topic/fishing/trout/.
Walleye, Sauger, And Hybrids Open All Year The minimum length limit is 15" and the daily bag limit is 3.
White Perch Open All Year The daily bag limit is 0, one may be killed and possessed for transport to a WDNR Office.

DISCLAIMER: Information on this site is an interpretive summary of Wisconsin's fishing laws and regulations, and only applies to inland lakes. All other regulations, including those for trout and salmon, rivers, and border waters of the state (the Mississippi River or Great Lakes), can be found at https://dnr.wisconsin.gov/topic/fishing/regulations/index.html . For complete fishing laws and regulations, consult the Wisconsin State Statutes Chapter 29 and the Administrative Code of the Department of Natural Resources. The regulations listed here may not reflect the exact species found in the lake or flowage. Please check to make sure there is public access and water available for fishing. Consult the Menominee Tribal Legislature for fishing regulations within the boundaries of the Menominee Reservation.

For more information or to report a regulation inconsistency, contact

Fisheries Management