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from Twin Mountain
|Location||Ulster County, New York|
|Type||natural lake, reservoir|
|Basin countries||United States|
|Surface area||approx. 150 acres (61 ha)|
|Surface elevation||1,080 ft (330 m)|
Cooper Lake, located near Lake Hill in the Town of Woodstock, Ulster County, New York, is the largest natural lake in the Catskill Mountains. However, it has been expanded somewhat over the years since it serves as the main reservoir for the nearby City of Kingston and Town of Ulster, which stores water there that it pipes from Mink Hollow Stream in addition to the water that reaches the lake from its 8.6-square mile (22.4 km²) drainage basin.
It holds roughly 1.2 billion US gallons (4,500,000 m3) to the city a year; providing an average of 4.6 million US gallons (17,000 m3) a day to Kingston and Ulster.
Swimming and fishing in Cooper Lake are prohibited.