Watershed Summary 

Located in northeastern Lower Michigan, the entire Au Sable River Watershed drains 1,932 square miles before flowing into Lake Huron.  The watershed covers parts of eight counties: Otsego, Crawford, Montmorency, Roscommon, Ogemaw, Oscoda, Iosco, and Alcona.  The Upper Au Sable River watershed plan was approved under the CMI administrative rules and was funded under section 319. 

MDEQ Nonpoint Source Links 

For a copy of the approved watershed management plan, please contact Peter Vincent via email, or at 517-241-8351.

• Au Sable River Conservation Easement and Education Project (220 KB PDF) 

Watershed Websites 

• Huron Pines RC&D Council 

Suggestions, corrections, or comments? Please contact us .