Rule 12. On the waters of the Black river commencing at a point 1,000feet south of the intersection of the Black river and the Black river canal, to a point 500 feet northwest of the intersection, section 27, town 7 north, range 17 east, township 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. 281.774.12