Minn. Stat. § 97C.077: FISH SCREENS IN LAKES.

Subdivision 1. Lake in single county.

If all or a major part of a navigable lake is located within a single county and has been stocked with fish by the United States government, the county board, in order to maintain fish in the lake and prevent their escape from the lake, may erect and maintain screens at the inlets and outlets of the lake. The county board may appropriate from the county treasury money for the erection and maintenance of the screens.

Subd. 2. Lake in more than one county.

If a lake is located in more than one county, the county boards of the affected counties may jointly provide for the erection and maintenance of screens. The expense of the screens and maintenance must be paid equally between the counties, and the county boards must appropriate money from the county treasury of their respective counties to pay the expenses of the screens and maintenance.