The Waterbury Dam was built between 1935-1938 by 2,000 men working for the Corps of Engineers, United States Army, to serve as one of three dams to control the flow of Little River, Vermont, Winooski River and its tributaries. In 1927, flood waters from the Winooski River killed over 55 people and caused an estimated $13,000,000 in damage. Along with flood control, the dam also generates electric energy, generating an average of 15,000,000 kilowatt-hours (54,000,000 MJ) annually. The dam and the reservoir it creates, the , are located in the town of Waterbury in northwestern Washington County.