Regulation No. 81 - Washtenaw county
- Section R. 281.781.1 - Big Silver lake
- Section R. 281.781.2 - Round lake
- Section R. 281.781.3 - Freedom (Little Silver) lake
- Section R. 281.781.4 - Huron river, Ann Arbor city and township; speed restriction
- Section R. 281.781.5 - Ford lake; hours for high-speed boating
- Section R. 281.781.6 - Ford lake, portion of; vessels prohibited
- Section R. 281.781.7 - Base Line lake, bay; slow-no wake speed
- Section R. 281.781.8 - Canals connecting Huron river and Portage lake; slow-no wake speed
- Section R. 281.781.9 - Huron river; slow-no wake speed zone
- Section R. 281.781.10 - Rescinded
- Section R. 291.781.11 - Hi-Land lake and connecting canals and channels; prohibited conduct
- Section R. 281.781.12 - Little Portage lake; portion of, and connecting canals and channels; slow-no wake speed