Minn. Stat. § 484.02: CONCURRENT JURISDICTION; BOUNDARY WATERS.

For the purposes of exercising the concurrent jurisdiction of the courts of this state in civil and criminal cases arising upon rivers or other waters which constitute a common boundary to this and any adjoining state, the counties bordering upon such waters shall be deemed to include so much of the area thereof as would be included if the boundary lines of such counties were produced in the direction of their approach and extended to the opposite shore.