Canaan Dam - Stewartstown, NH
Posted by: 
nomadwillie
N 44° 59.944 W 071° 31.791
19T E 300605 N 4985960
The project dam was originally constructed in 1927 as a non-powered dam. The dam was reconstructed and upgraded in 1943, adding hydropower facilities to the project.
Waymark Code: WM16586
Location: New Hampshire, United States
Date Posted: 05/08/2022
Views: 0
The Canaan Dam, a 27-foot hydroelectric dam and adjoining railroad bridge spanning the Connecticut River between Stewartstown, New Hampshire, and Canaan, Vermont.
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The project dam was originally constructed in 1927 as a non-powered dam. The dam was reconstructed and upgraded in 1943, adding hydropower facilities to the project. The Project is owned and operated by Central Rivers Power NH, LLC.
The concrete gravity dam is approximately 275 feet long and 18 feet tall, located on the Connecticut River in Stewartstown, NH. A concrete section is located at the south abutment and is 56 feet wide with stoplogs supported by steel stanchions. The main spillway is a concrete gravity, ogee-shaped section approximately 150 feet long and equipped with 3.5 feet high pipe-supported flashboards. A waste gate is located to the right of the main spillway. It consists of a 20-foot-wide concrete sluiceway equipped with an electrically operated 15-foot high steel tainter gate. A steel penstock, 1,360 feet long with diameter of 9 feet, and two steel surge tanks, 15' 4? in diameter and 21' 4? in height, convey water to the powerhouse located about 200 feet downstream of the surge tanks. These facilities are all located in Canaan, Vermont. The powerhouse contains a single vertical Francis turbine. The bypassed reach is approximately 1,600 feet long and composed of ledge, cobble, and boulders.
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