Dark houses, fish houses and portables must be off the ice no later than midnight for each of the dates given in the following categories below. County sheriffs may prohibit or restrict the use of motorized vehicles if dangerous ice conditions are present. If shelters are not removed, owners will be prosecuted, and the structure and contents may be confiscated and removed, or destroyed by a conservation officer.
Inland waters – early March
- South of line – March 4
- North of line – March 18
Border waters – early March
- Minnesota–Wisconsin – March 1
- Minnesota–North and South Dakota – March 5
- Minnesota–Canada – March 31
Dates of removal are determined by an east-west line formed by U.S. Hwy. 10, east along Hwy. 34 to Minnesota Hwy. 200, east along Hwy. 200 to U.S. Hwy. 2, and east along Hwy. 2 to the Minnesota-Wisconsin border. After removal dates, shelters may remain on the ice between midnight and one hour before sunrise only when occupied or attended. Storing or leaving shelters on a public access is prohibited.
- All non-portable ice shelters must be licensed.
- Wheeled fish houses are not considered portable and must be licensed.
- An annual shelter license costs $15 for residents and $37 for non-residents, not including issuing fees that may be charged.
- A shelter license is valid from March 1 through April 30 of the following year.
- A shelter license is not required on border waters between Minnesota or Wisconsin, Iowa and North and South Dakota.