Middle Branch Reservoir is a reservoir in the New York City water supply system located in the Town of Southeast in Putnam County, 65 km north of the city. Created in 1878 by damming the Middle Branch of the Croton River, it is one of twelve in the Croton Watershed.
Middle Branch covers 1.6 km2, with an average depth of 9.4 m, although some areas in the reservoirs southern extent reach 15 m. It drains an area of 55 km2 reaching into Dutchess County. At full capacity, it holds 6.4 million m3.
