About: Ames Mill Dam

Ames Mill Dam is a 6-foot (2 m) low-head dam located near South Water Street in Northfield city, in southeastern Minnesota, in the United States. It lies on the Cannon River, a tributary of the Mississippi River 35 miles (55 km) south of St. Paul. Ames Mill was originally built as a wooden dam in 1855 and then rebuilt as one of the six concrete dams on the Cannon River in 1919. The Cannon River was central to industrial development in the late 19th century through hydroelectric power production. The presence of dams along the river has influenced geomorphologic changes which affect fish, mussel populations and sediment. The Ames Mill Dam was used to power the Ames Flour Mill; however, it is no longer used for hydroelectric power because the dam is old and nearing the end of its lifespan. C