Old Croton Dam

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Site of Old Croton Dam
Croton Reservoir.jpg
The Old Croton Dam lies submerged in the New Croton Reservoir
Old Croton Dam is located in New York
Old Croton Dam
Old Croton Dam is located in the United States
Old Croton Dam
LocationS of Yorktown Heights on NY 129, Yorktown, New York
Coordinates41°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
Area110 acres (45 ha)
ArchitectJohn B. Jervis; Multiple
NRHP reference No.73001289 [1]
Added to NRHPJune 19, 1973

The Old Croton Dam is a historic dam located in Yorktown, Westchester County, New York, now lying submerged beneath the waters of the New Croton Reservoir. The dam was built on the Croton River between 1837 and 1842, and was the first substantial masonry dam in the United States. Construction was delayed by a January 1841 storm that washed away most of the dam,[2][3][4] with heavy downstream damage and loss of life.


The 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 impounded water from the Croton River watershed, forming a reservoir several miles long to the 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 River, and roughly follows the Hudson south.

The dam and aqueduct constitute a major part of the original New York City water supply system. The New Croton Aqueduct opened in 1890, augmenting the original until supply from the Delaware and Catskill Aqueducts was sufficient to take it off line in 1955. When the New Croton Dam was completed in 1906, the old dam was submerged to a depth of 34 feet (10 m).[5][6]

The dam site 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. March 13, 2009.
  2. ^ Fyfe, Joan J. (Fall 2004). "Preserve the Past - Enlighten the Future" (PDF). Yorktown Historical Society. Archived from the original (PDF) on 2012-04-02. Retrieved 2011-11-03.
  3. ^ "Croton Water Supply System". ASCE Metropolitan Section. Retrieved 2016-11-12.
  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. ^ "Cultural Resource Information System (CRIS)". New York State Office of Parks, Recreation and Historic Preservation. Archived from the original (Searchable database) on 2015-07-01. Retrieved 2016-08-01. Note: This includes Rennenkampf, Lenore M. (April 1973). "National Register of Historic Places Registration Form: Site of Old Croton Dam" (PDF). Retrieved 2016-08-01. and Accompanying four photographs
  6. ^ Lange, Robie S. (October 1991). "National Register of Historic Places Registration Form" (PDF). National Park Service. Retrieved 2011-11-03.