Regulation No. 74 - St. Clair county
- Section R. 281.774.1 - Lake St. Clair; certain creeks, channels, and canals
- Section R. 281.774.2 - Lake St. Clair; certain channel
- Section R. 281.774.3 - Black river, from mouth to Grand Trunk bridge; speed restriction
- Section R. 281.774.4 - Black river, adjacent to highway 94 bridge, part in city of Port Huron; speed restriction
- Section R. 281.774.5 - Black river, adjacent to intersection with canal, part in city of Port Huron; speed restriction
- Section R. 281.774.6 - Swan creek and connecting channels; speed restriction
- Section R. 281.774.7 - Rescinded
- Section R. 281.774.8 - Channels and canals, city of Algonac; slow-no wake speed
- Section R. 281.774.9 - Belle river from King road to Marine City; slow-no wake speed
- Section R. 281.774.10 - Belle river, part in Marine City; slow-no wake speed
- Section R. 281.774.11 - Black river adjacent to highway 94 bridge, part in township of Port Huron; speed restriction
- Section R. 281.774.12 - Black river adjacent to intersection with canal; part in township of Port Huron, speed restriction
- Section R. 281.774.13 - Black river adjacent to intersection with canal; part in township of Fort Gratiot, speed restriction
- Section R. 281.774.14 - Pine river in city of St. Clair; slow-no wake speed
- Section R. 281.774.15 - St. Clair river and connected waters; slow-no wake speed
- Section R. 281.774.16 - Black river canal; prohibited conduct
- Section R. 281.774.18 - Black river; slow-no wake speed