page_title: Croton River
section_title: History
hierarchical_section_title: Croton River / History
caption_attribution_description: English: New Croton Dam spillway near Croton, New York, USA Français&#160;: Barrage de New Croton, près de Croton, New York, Etats-Unis
context_page_description: The Croton River is a river in southern New York with three principal tributaries: the West Branch, Middle Branch, and East Branch. Their waters, all part of the New York City water supply system, join downstream from the Croton Falls Reservoir. Together, their waters and the reservoirs linked to them represent the northern half of the New York City water system's Croton Watershed.
  Shortly after the confluence of the three Croton River branches the Croton River proper, along with its tributary, the Muscoot River, flows into the Muscoot Reservoir, after which it empties into the New Croton Reservoir, which feeds the New Croton Aqueduct supplying water to New York City. Excess water leaves the spillway at the New Croton Dam and empties into the Hudson River at Croton-on-Hudson, New York at Croton Point, about 30 miles north of New York City. The river has a watershed area of 361 square miles.
context_section_description: The Croton River was the main source of New York City's water supply from 1842 on. It was brought to the city through the Croton Aqueduct, which was later called the Old Croton Aqueduct.
  Seeking to expand New York City's water supply, engineers of the city Aqueduct Commission designed in 1884 a 275-to-300-foot-high (84 to 91 m) masonry dam spanning the Croton River near its mouth. The resulting storage reservoir, impounding a 16-square-mile (41 km²) watershed, would hold 14.2 billion US gallons (54,000,000 m³) at full capacity. This dam, now known as the New Croton Dam, was completed in 1906. Further upstream, two tributaries of the Croton were dammed, creating the Croton Falls Reservoir, which was placed into service in 1911.
  In the 1890s, rather than resorting to expensive filtration, New York City ordered the destruction or relocation of any village or hamlet threatening to pollute the Croton or its tributaries.  Many were moved.
  In the late 1990s, New York City stopped using water from the Croton as it became more and more unsuitable for drinking.  In 2004, a project was started to rehabilitate the New Croton Aqueduct and build a filtration plant which is expected to come on line after 2015.
caption: The Croton River is part of the New York City water supply system, the flow of its three branches are collected at the New Croton Reservoir.  Pictured, New Croton Dam
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