Highbridge Reservoir was a reservoir in the New York City water supply system, which received water from a portion of the Croton Aqueduct system. It was located on Amsterdam Avenue between 172nd Street and 174th Street, in Upper Manhattan adjacent to the High Bridge Water Tower and the High Bridge across the Harlem River Valley. The reservoir covered about 7 acres (28,000 m2), was 16 feet (4.9 m) deep, and had a total capacity of 10,794,000 US gallons (40,860,000 L).