Rule 1. On the frozen surfaces of Lake Cadillac, sections 4, 5, and 6, T21N, R9W, and on the frozen surfaces of that part of Lake Mitchell within the boundary of the City of Cadillac, section 6, T21N, R9W, City of Cadillac, Wexford county, a person shall not operate a snowmobile at a speed greater than that necessary to maintain forward movement of the snowmobile when the snowmobile is being operated within 100 feet of any open water.
Mich. Admin. Code R. 257.1601