Rule 12. On the waters of the Grand river, sections 33 and 34, town 8 north, range 15 west, Crockery and Robinson townships, Ottawa county, from a point where 120th avenue, as extended, meets the water's edge, downstream for 2,500 feet and upstream for 1,500 feet, it is unlawful for an operator of a vessel to exceed a slow-no wake speed.
Mich. Admin. Code R. 281.770.12