Skiers will encounter a few downhill slopes, but nothing too difficult, making for an overall easy ski trail. Iargo Springs See also Ausable River (Lake Huron), an Ontario tributary of Lake Huron Notes External links Map of Au Sable River watershed Anglers of the Au Sable Au Sable Canoe Marathon Huron-Manistee National Forest Lumberman's Monument Lumberman's Monument at the U.S. Forest Service River Road Scenic Byway at America's Byways. Rivers of Michigan Rivers of Roscommon County, Michigan Rivers of Otsego County, Michigan Rivers of Oscoda County, Michigan Rivers of Alcona County, Michigan Rivers of Iosco County, Michigan Huron-Manistee National Forests Tributaries of Lake Huron Wild and Scenic Rivers of the United States