McIndoes Reservoir is a 545-acre impoundment on the Connecticut River on the boundary between Vermont and New Hampshire. The dam forming the reservoir lies between the communities of McIndoe Falls, Vermont, and Monroe, New Hampshire. Monroe Road (Frazier Road) crosses the reservoir 600 feet north (upstream) of the dam, leading west 0.2 miles to US-5 in McIndoe Falls and east the same distance to NH-135 in the center of Monroe. The next river crossing upstream is a bridge carrying the North Monroe Road (Barnet Road), 1.5 miles north of McIndoe Falls.

McIndoe Falls Dam creating the reservoir was built in 1931 as a project of the New England Electric System, along with the nearby Frank D. Comerford Dam.