Harriman Dam is a hydroelectric dam in

Windham County, Vermont Windham County is a county located in the U.S. state of Vermont. As of the 2020 census, the population was 45,905. The shire town (county seat) is Newfane, and the largest municipality is the town of Brattleboro. History Fort Bridgman, Vernon ...

in the town of Whitingham. The water from the dam flows through a

penstock A penstock is a sluice or gate or intake structure that controls water flow, or an enclosed pipe that delivers water to hydro turbines and sewerage systems. The term is inherited from the earlier technology of mill ponds and watermills. H ...

to a power generation plant in the adjacent town of Readsboro. The dam was built in 1923 by the New England Power Company. Some high and long as its crest, it's one of the ten hydroelectric dams impounding the

Deerfield River Deerfield River is a river that runs for from southern Vermont through northwestern Massachusetts to the Connecticut River. The Deerfield River was historically influential in the settlement of western Franklin County, Massachusetts, and its n ...

.http://www.lowimpacthydro.org/assets/files/Deerfield%2520documents/Attachment%2520C% Owned and operated by Great River Hydro LLC it was purchased from the

TransCanada Corporation TC Energy Corporation (formerly TransCanada Corporation) is a major North American energy company, based in the TC Energy Tower building in Calgary, Alberta, Canada, that develops and operates energy infrastructure in Canada, the United States, ...

in 2017. The facility is an earthen dam with a relatively unusual concrete "Ben’s glory hole" (freestanding conical drain)

spillway A spillway is a structure used to provide the controlled release of water downstream from a dam or levee, typically into the riverbed of the dammed river itself. In the United Kingdom, they may be known as overflow channels. Spillways ensure tha ...

, similar to another example at

Monticello Dam Monticello Dam is a high concrete arch dam in Napa County, California, United States, constructed between 1953 and 1957. The dam impounded Putah Creek to create Lake Berryessa in the Vaca Mountains. Lake Berryessa is currently the seventh-large ...

in California.

The reservoir it creates, Harriman Reservoir, has a water surface area of , a maximum depth of , and has a gross storage capacity of . The name comes from utility executive Henry I. Harriman, president of the New England Power Company.

References

{{authority control Dams in Vermont Reservoirs in Vermont TC Energy dams Embankment dams Hydroelectric power plants in Vermont Dams completed in 1923 Energy infrastructure completed in 1923 Buildings and structures in Whitingham, Vermont Bodies of water of Windham County, Vermont 1923 establishments in Vermont