Delaware Aqueduct

For the historic bridge joining Pennsylvania and New York, see Roebling's Delaware Aqueduct.

41°16′56″N 73°40′04″W / 41.282317°N 73.667908°W / 41.282317; -73.667908

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Delaware Aqueduct, New York
Rondout Reservoir

The Delaware Aqueduct is an aqueduct in the New York City water supply system. It takes water from the Rondout, Cannonsville, Neversink, and Pepacton reservoirs on the west bank of the Hudson River through the Chelsea Pump Station, then into the West Branch, Kensico, and Hillview reservoirs on the east bank, ending at Hillview in Yonkers, New York.

The aqueduct was constructed between 1939 and 1945, and carries approximately half of New York City's water supply of 1.3 billion US gallons (4,900,000 m3) per day. At 13.5 feet (4.1 m) wide and 85 miles (137 km) long, the Delaware Aqueduct is the world's longest tunnel.[1]

  1. ^ "DEP Announces Major Milestone For Delaware Aqueduct Repair As Tunneling Machine Completes Excavation". New York City Department of Environmental Protection (NYCDEP). August 16, 2019. Archived from the original on August 11, 2022. Retrieved August 11, 2022.