Rule 5. On the waters of the Black river, commencing at a point 1,000 feet south of the intersection of the Black river and the Black river canal to a point 500 feet northwest of the intersection, city of Port Huron, county of St. Clair, state of Michigan, no operator of any motorboat shall exceed a slow-no wake speed, which means a very slow speed whereby the wake or wash created by the motorboat would be minimal.
Mich. Admin. Code R. 281.774.5