Harriman Dam
Harriman Dam is a hydroelectric dam in Windham County, Vermont in the town of Whitingham. The water from the dam flows through a penstock to a power generation plant in the adjacent town of Readsboro.
The dam was built in 1923 by the New England Power Company.[1] Some 215 feet (66 m) high and 1,250 feet (380 m) long as its crest, it's one of the ten hydroelectric dams impounding the Deerfield River.[2] Owned and operated by Great River Hydro LLC it was purchased from the TransCanada Corporation in 2017.[3] The facility is an earthen dam with a relatively unusual concrete "Ben’s glory hole" (freestanding conical drain) spillway, similar to another example at Monticello Dam in California.

The reservoir it creates, Harriman Reservoir, has a water surface area of 2,039 acres (825 ha), a maximum depth of 180 feet (55 m), and has a gross storage capacity of 117,300 acre-feet (144.7 million cubic metres).[2]
The name comes from utility executive Henry I. Harriman, president of the New England Power Company.
References
- "Molly Stark Byway Project". Mollystarkbyway.org. Retrieved 11 April 2018.
- http://www.lowimpacthydro.org/assets/files/Deerfield%2520documents/Attachment%2520C%
- "Our History".