- Shandaken Tunnel
The Shandaken Tunnel is an underground tunnel in Eastern
New York State , part of theNew York City water supply system . It was constructed between 1917 and 1924. The aqueduct starts inGilboa, New York at theSchoharie Reservoir , which is in the counties of Schoharie, Delaware, and Greene. The water flows south towards theEsopus Creek inUlster County . It finally empties into a man-made pool inAllaben, New York , within the Township of Shandaken, and enters Esopus Creek there.The tunnel is over 18 miles (29
kilometres ) in length, and carries water through Greene County and Ulster County. Water flows through the tunnel by gravity; it slopes at a rate of 4.4 feet per mile. It is 11.5 feet high, and 10.2 feet wide. There are seven shafts along the tunnel, serving as air vents to introduceoxygen to the water, and to bring out impurities.ee also
*
Schoharie Reservoir
*Ashokan Reservoir
*Esopus Creek
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