Cannonsville Dam
The town of Cannonsvile was destroyed to make room for the reservoir, which lies within the towns of Tompkins and Deposit.
Its 455 square miles (1,180 km) drainage basin is the largest of all of the NYC reservoirs. Capacity is 95.7 billion US gallons (362,000,000 m). Water from the reservoir flows through the 44-mile (71 km) West Delaware Tunnel into the Rondout Reservoir, before joining the 85-mile (137 km) Delaware Aqueduct, which provides New York City with about 50% of its drinking water.
The Delaware Aqueduct then crosses beneath the Hudson River and continues on to the West Branch Reservoir in Putnam County, New York, then the Kensico Reservoir in Westchester County, both north of the city. It then continues further south to the Hillview Reservoir in Yonkers, where it joins the flows of the Catskill and New Croton aqueducts for distribution through the New York City tunnel system.
The Cannonsville Dam is being considered as a site for a 14.08MW hydroelectric generating station.
Recreation
No motor boats are allowed on the reservoir; non-motorized boats that have been steam-cleaned and that have required tags may be used in the reservoir during the summer.
Tributaries
- Johnny Brook
- Dry Brook
- Sherruck Brook
- Trout Creek
- Loomis Brook
- Chamberlain Brook
- Dryden Brook
- Maxwell Brook
- Fish Brook
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Aerial view of Cannonsville Reservoir
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The entrance to the Cannonsville Reservoir
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Cannonsville Reservoir at Deposit