The Framingham Reservoir No. 1 Dam and Gatehouse are a historic water works facility in Framingham, Massachusetts. They are located at the end of Framingham Reservoir No. 1, off Winter Street and north of Long Avenue. They were constructed 1876-78 as part of an expansion of the water supply of the city of Boston and were designed by its first city architect George A. Clough. The historical purpose of the reservoir, which was located at the confluence of two branches of the Sudbury River, was to control the river's water level, and to provide reserve supply capacity. It is no longer in service as part of the water supply system, although it is still owned by the Massachusetts Water Resources Authority, successor to the Boston Water Board which oversaw its construction.