New York City Water Tunnel No. 3 - Valve Chambers

Valve Chambers

The largest valve chamber is in Van Cortlandt Park. It is built 250 feet (76 m) below the park surface. When completed it will control the flow of water from the city's Catskill and Delaware systems. These systems provide 90 percent of the city's current drinking water. The Van Cortlandt Park Valve Chamber is 620 feet (190 m) long, and 43 feet (13 m) wide and 41 feet (12 m) high. The complex has nine vertical shafts; and two manifolds. Each manifold is 560 feet (170 m) long and 24 feet (7.3 m) in diameter. It will be finished in 2020.