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Riverkeeper studies the water quality of the Hudson. The river water is measured for salinity, oxygen, temperature, suspended sediment, chlorophyll and sewage. As of 2008, it is estimated that each year New York City's 460 Combined Sewer Overflows (CSOs) dump more than 27 billion gallons of raw sewage into the river and New York Harbor. [29]
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The original Croton Dam (Old Croton Dam) was built between 1837 and 1842 to improve New York City's water supply.By 1881, after extensive repairs to the dam, which was 50 feet (15 m) high, the Old Croton Reservoir was able to supply about 90 million US gallons (340,000 m 3) a day to the city via the Old Croton Aqueduct. [5]
The latter two aqueducts provide 90% of New York City's drinking water, and the watershed for these aqueducts extends a combined 1 million acres (400,000 ha). Two-fifths of the watershed is owned by the New York City, state, or local governments, or by private conservancies.
The Croton Aqueduct or Old Croton Aqueduct was a large and complex water distribution system constructed for New York City between 1837 and 1842. The great aqueducts, which were among the first in the United States, carried water by gravity 41 miles (66 km) from the Croton River in Westchester County to reservoirs in Manhattan.
Rondout Reservoir is part of New York City's water supply network. It is located 75 miles (121 km) northwest of the city in the Catskill Mountains, near the southern end of Catskill Park, split between the towns of Wawarsing in Ulster County and Neversink in Sullivan County. It is the central collection point for the city's Delaware System ...
Location: Delaware County, New York: Coordinates: 1]: Type: Reservoir: Primary inflows: West Branch Delaware River: Primary outflows: West Branch Delaware River, West Delaware Tunnel: Catchment area: 455 sq mi (1,180 km 2): Basin countries: United States: Water volume: 362,000,000 m 3 (0.087 cu mi): Surface elevation: 1,148 feet (350 m) [1]: The Cannonsville Reservoir is a reservoir in the New ...
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.