Mill Creek drains the Dingman Marsh, a perched wetland within Mackinaw State Forest in northwest Cheboygan County. The Discovery Park includes approximately 1 mile (1.6 km) of the eponymous creek's watercourse as it flows downhill toward Lake Huron, but not the wetland. The creek dam and sawmill (c. 1790) were rebuilt in 1984; the sawmill was restored in part for the 2007 season. The British Workshop (c. 1820) was rebuilt around 1994 on the site of the original. The millwright's house (c. 1820) was rebuilt in 2005. As of 2008, the park had of nature trails, with a small portion handicapped-accessible.