Before revision: 7 (Onalaska Dam), La Crescent, Minnesota (USACE) The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow.
After revision: Stevenson Dam Tainter Gate7 (Onalaska Dam), La Crescent, Minnesota (USACE) The Tainter gate is a type of radial arm floodgate used in dams and canal locks to control water flow.