Minn. Stat. § 97C.363
Subd. 1. Prohibition.
A person using a shelter, a motor vehicle, or any other conveyance on the ice of state waters may not deposit garbage, rubbish, cigarette filters, debris from fireworks, offal, the body of a dead animal, litter, sewage, or any other waste outside the shelter, motor vehicle, or conveyance unless the material is:
Subd. 2. Definition.
For purposes of this section, "sewage" means excrementitious or other discharge from the bodies of human beings or animals, together with such other water as may be present.
Subd. 3. Penalty.
A violation of this section is a petty misdemeanor, and a person who violates this section is subject to a civil penalty of $100 for each violation.