Moore Reservoir is an impoundment on the Connecticut River located in the communities of Littleton, New Hampshire; Dalton, New Hampshire; Waterford, Vermont; and Concord, Vermont. It occupies approximately 3,490 acres.

It was created by the completion of the Moore Dam in 1956, which caused the flooding of several villages, including Pattenville, New Hampshire, and old Waterford, Vermont. Moore Dam is now owned and operated by TransCanada Corporation. With a capacity of 192 megawatts, it is the most productive of TransCanada’s thirteen hydroelectric facilities in New England.