When is smallmouth bass season in Wisconsin?

Northern zone: harvest 3rd Sat in June – 1st Sun in March. Southern: harvest 1st Sat in May. Those are the 2026 Wisconsin dates; always confirm against Wisconsin Department of Natural Resources before a trip, because an emergency order can shift an opener with little notice.

What is the Wisconsin bag limit for smallmouth bass?

The Wisconsin daily bag limit for smallmouth bass is 5 / day (smallmouth + largemouth combined). The possession limit is 5 in possession. Some named waters set a different limit — check the water-body overrides above.

What size smallmouth bass can you keep in Wisconsin?

The Wisconsin size rule for smallmouth bass is 14 in minimum statewide.

Do you need a license to fish for smallmouth bass in Wisconsin?

Yes. Wisconsin requires a valid fishing license to fish for smallmouth bass, with the usual exemptions for young children, state free-fishing days, and some senior or disabled-veteran categories. A license is valid only in the state that issued it, so non-residents need a Wisconsin license — compare resident and non-resident Wisconsin fees on the state regulations page below.

Are there gear restrictions for smallmouth bass in Wisconsin?

Yes. In Wisconsin, smallmouth bass fishing carries these gear rules: Hook-and-line on most waters; Catch-and-release window in Northern zone: no harvest 1st Sat in May – 3rd Fri in June.

Do specific Wisconsin waters have different smallmouth bass rules?

Yes. 4 named Wisconsin waters carry rules that override the statewide smallmouth bass regulation, including Mississippi River, Wolf River, Wisconsin River (lower), and 1 more. See the named water-body overrides above for the exact rule on each.

2026 regulation year

Wisconsin Smallmouth bass 2026 — Season, Bag Limit, Size Rules

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Last updated May 20, 2026

Wisconsin's smallmouth fishery is split between the Mississippi River pools, the Wolf and Wisconsin rivers, and northern lakes. A 14-inch minimum and 5-fish combined bass bag apply statewide outside of catch-and-release windows.

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Season

Northern zone: harvest 3rd Sat in June – 1st Sun in March. Southern: harvest 1st Sat in May.

Jun 20 – Mar 1Northern zone harvest
May 2 – Mar 1Southern zone harvest

Bag & possession

Daily bag: 5 / day (smallmouth + largemouth combined)
Possession: 5 in possession

Size, slot, trophy rules

Size: 14 in minimum statewide

Gear restrictions

Hook-and-line on most waters
Catch-and-release window in Northern zone: no harvest 1st Sat in May – 3rd Fri in June

Named water-body overrides

Where statewide rules differ on specific Wisconsin waters:

Mississippi River
MN/WI boundary; 14 in min, 5 / day combined
Wolf River
Statewide rule; spring smallmouth run heavily fished
Wisconsin River (lower)
Statewide rule; smallmouth + sauger water
Green Bay (Lake Michigan)
Great Lakes booklet: 14 in, 5 / day

Official source

Wisconsin Department of Natural Resources publishes the authoritative 2026 Wisconsinfishing regulations. Always verify the current rule before fishing — emergency closures and in-season changes can override what's published here.

Visit official Wisconsin fishing regulations →

Emergency-order channel

Smallmouth bass closures, slot-limit changes, and harvest pauses are posted to Wisconsin Department of Natural Resources's emergency-order feed — check it before any Wisconsin trip during the active season.

Frequently asked questions

When is smallmouth bass season in Wisconsin?: Northern zone: harvest 3rd Sat in June – 1st Sun in March. Southern: harvest 1st Sat in May. Those are the 2026 Wisconsin dates; always confirm against Wisconsin Department of Natural Resources before a trip, because an emergency order can shift an opener with little notice.
What is the Wisconsin bag limit for smallmouth bass?: The Wisconsin daily bag limit for smallmouth bass is 5 / day (smallmouth + largemouth combined). The possession limit is 5 in possession. Some named waters set a different limit — check the water-body overrides above.
What size smallmouth bass can you keep in Wisconsin?: The Wisconsin size rule for smallmouth bass is 14 in minimum statewide.
Do you need a license to fish for smallmouth bass in Wisconsin?: Yes. Wisconsin requires a valid fishing license to fish for smallmouth bass, with the usual exemptions for young children, state free-fishing days, and some senior or disabled-veteran categories. A license is valid only in the state that issued it, so non-residents need a Wisconsin license — compare resident and non-resident Wisconsin fees on the state regulations page below.
Are there gear restrictions for smallmouth bass in Wisconsin?: Yes. In Wisconsin, smallmouth bass fishing carries these gear rules: Hook-and-line on most waters; Catch-and-release window in Northern zone: no harvest 1st Sat in May – 3rd Fri in June.
Do specific Wisconsin waters have different smallmouth bass rules?: Yes. 4 named Wisconsin waters carry rules that override the statewide smallmouth bass regulation, including Mississippi River, Wolf River, Wisconsin River (lower), and 1 more. See the named water-body overrides above for the exact rule on each.

← Back to Wisconsin regulations overview