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Site of Old Croton Dam
U.S. National Register of Historic Places
The Old Croton Dam lies submerged in the New Croton Reservoir
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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; -73.80056
Area	110 acres (45 ha)
Built	1842
Architect	John B. Jervis; Multiple
NRHP reference No.	73001289
Added to NRHP	June 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, with heavy downstream damage and loss of life.

History

The gravity dam was 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 started just upstream of the dam, carrying water down the Croton River valley toward the Hudson River, then roughly following the Hudson south.

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

The dam site was added to the National Register of Historic Places in 1973.

See also

• National Register of Historic Places listings in northern Westchester County, New York

References

1. ^ "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.

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• Buildings and structures in Westchester County, New York
• Dams completed in 1842
• Water infrastructure of New York City
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• Dams on the National Register of Historic Places in New York (state)
• National Register of Historic Places in Westchester County, New York
• Yorktown, New York
• Westchester County, New York Registered Historic Place stubs