Английская Википедия:Catskill Aqueduct
The Catskill Aqueduct, part of the New York City water supply system, brings water from the Catskill Mountains to Yonkers where it connects to other parts of the system.
History
Construction commenced in 1907. The aqueduct proper was completed in 1916 and the entire Catskill Aqueduct system including three dams and 67 shafts was completed in 1924.[1] The total cost of the aqueduct system was $177 million (Шаблон:Inflation).[2]
Specifications
The Шаблон:Convert aqueduct consists of Шаблон:Convert of cut and cover aqueduct, over Шаблон:Convert of grade tunnel, Шаблон:Convert of pressure tunnel, and nine miles (10 km) of steel siphon.[3] The 67 shafts sunk for various purposes on the aqueduct and City Tunnel vary in depth from 174 to Шаблон:Convert.[4] Water flows by gravity through the aqueduct at a rate of about Шаблон:Convert.[5]
The Catskill Aqueduct has an operational capacity of about Шаблон:Convert per day north of the Kensico Reservoir in Valhalla, New York. Capacity in the section of the aqueduct south of Kensico Reservoir to the Hillview Reservoir in Yonkers, New York is Шаблон:Convert per day.[6] The aqueduct normally operates well below capacity with daily averages around 350–Шаблон:Convert of water per day. About 40% of New York City's water supply flows through the Catskill Aqueduct.
Geography
The Catskill Aqueduct begins at the Ashokan Reservoir in Olivebridge, New York, located in Ulster County. From the Ashokan Reservoir, the aqueduct traverses in a southeasterly direction through Ulster, Orange, and Putnam counties. It tunnels first beneath the Rondout Valley and Rondout Creek in the town of Marbletown, then beneath the Wallkill River in the town of Gardiner in Ulster County before flowing toward Orange County, New York. It crosses Шаблон:Convert below the Hudson River bed at Storm King Mountain in Orange County before reaching Putnam County on the east side of the river at Breakneck Mountain. The aqueduct transports water from Ashokan as well as the Schoharie Reservoir, which feeds into Ashokan.[7]
The aqueduct then enters Westchester County, New York, and flows to the Kensico Reservoir, which also receives water from the city's Delaware Aqueduct. It continues from the Kensico reservoir and terminates at the Hillview Reservoir in Yonkers. The Hillview Reservoir then feeds City Tunnels 1 and 2, which bring water to New York City. If necessary, water can be made to bypass both reservoirs.
References
See also
- Delaware Aqueduct
- New York City Water Supply System
- Frank E. Winsor the engineer in charge of construction of Шаблон:Convert of the Aqueduct.
- ↑ A history of the NYC water supply system - Merguerian, 2000c
- ↑ Catskill Water Supply: A General Description and Brief History
- ↑ Kevin Bone, ed. Water-Works: The Architecture and Engineering of the New York City Water Supply (New York: Monacelli, 2006), 258.
- ↑ A history of the NYC water supply system - Merguerian, 2000c
- ↑ Water Supply and Distribution Timeline – Greatest Engineering Achievements of the Twentieth Century
- ↑ New York City water supply system Шаблон:Webarchive
- ↑ The Hudson River Guidebook By Arthur G. Adams
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