Site of Old Croton Dam

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Site of Old Croton Dam
Croton Reservoir.jpg
New Croton Reservoir, in whose waters the dam site is located
Site of Old Croton Dam is located in New York
Site of Old Croton Dam
Location S of Yorktown Heights on NY 129, Yorktown, New York
Coordinates 41°14′00″N 73°48′02″W / 41.23333°N 73.80056°W / 41.23333; -73.80056Coordinates: 41°14′00″N 73°48′02″W / 41.23333°N 73.80056°W / 41.23333; -73.80056
Area 110 acres (45 ha)
Built 1842
Architect John B. Jervis; Multiple
Governing body Local
NRHP Reference #


Added to NRHP June 19, 1973

Site of Old Croton Dam is a historic dam site located at Yorktown, Westchester County, New York. The dam was built between 1837 and 1842 and was the first substantial masonry dam in the United States. Construction of the dam was delayed by a January 1841 storm that washed away most of the dam.[2][3][4]

A gravity dam constructed with a rubble core and granite ashlar foundation, it was 57 feet (17 m) high and 670 feet (200 m) long. The dam formed a reservoir several miles long, extending northeast along the path of the Croton River. Water flowed to New York City through the Old Croton Aqueduct, which starts just upstream of the dam and carries water down the Croton River valley toward the Hudson, and roughly follows the Hudson south. The dam and aqueduct constitute a major part of the original New York City water supply system. When the New Croton Dam was completed in 1906, the old dam was submerged, but the aqueduct continued to operate until 1955. When the reservoir created by the New Croton Dam is full, the old dam is submerged to 34 feet (10 m).[5][6]

It was added to the National Register of Historic Places in 1973.[1]

1872 engraving showing the dam

See also[edit]


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13. 
  2. ^ Fyfe, Joan J. (Fall 2004). "Preserve the Past - Enlighten the Future" (PDF). Yorktown Historical Society. Retrieved 2011-11-03. 
  3. ^ "Croton Water Supply System". ASCE Metropolitan Section. Retrieved 2011-11-03. 
  4. ^ Tompkins, Christopher R. (2000). The Croton Dams and Aqueduct. Images of America. Charleston, SC: Arcadia Publishing. p. 8. ISBN 0-7385-0455-6. 
  5. ^ Rennenkampf, Lenore M. (April 1973). "National Register of Historic Places Registration:Site of Old Croton Dam". New York State Office of Parks, Recreation and Historic Preservation. Retrieved 2011-01-01.  See also: "Accompanying four photos". 
  6. ^ Lange, Robie S. (October 1991). "National Register of Historic Places Registration Form" (PDF). National Park Service. Retrieved 2011-11-03.