Rule 1. On the waters of the south branch of the AuSable river and Mud lake, sections 8, 9 and 16, T23N, R1W, Richfield township, Roscommon county, from the dam on section 8, upstream to Lake St. Helen, it is unlawful for the operator of a vessel to exceed a slow-no wake speed.
Mich. Admin. Code R. 281.772.1