Georgetown Reservoir

The Georgetown Reservoir is a reservoir that is part of the water supply and treatment infrastructure for the District of Columbia. It is located in the Palisades neighborhood of Washington, D.C., approximately two miles downstream from the Maryland–D.C. boundary.

Georgetown Reservoir
The Castle Gatehouse, modeled after the U.S. Army Corps of Engineers insignia
LocationDistrict of Columbia
Coordinates38°54′44.43″N 77°5′33.94″W
TypeReservoir
Basin countriesUnited States
Water volume140,000,000 US gallons (530,000 m3)[1]
Georgetown Reservoir

The reservoir was built by the United States Army Corps of Engineers as part of the Washington Aqueduct project. It was partially completed by 1858, but work was suspended for lack of funds. Construction began again in 1862, and was complete in 1864.[2] Additional construction and modifications to the reservoir were carried out through the 1860s and 1870s.[3]

Water from the Dalecarlia Reservoir is pumped to the Georgetown Reservoir for further sedimentation before being treated at the McMillan Reservoir. The reservoirs and the nearby Dalecarlia water treatment plant are operated by the Army Corps of Engineers. The treated water is distributed throughout the city in water mains managed by the D.C. Water and Sewer Authority.

At the outlet of the Georgetown facility is a sluice gate building that controls the flow of water into Washington City Tunnel, which leads to the McMillan Reservoir. This structure, called the Georgetown Castle Gatehouse, was built by the Army (c. 1901) in the shape of a castle.[3]

References
  1. Hardy, E.D. (June 1911). "Water Purification Plant, Washington, D.C. Results of Operation". Transactions of the American Society of Civil Engineers. LXXII. Retrieved 2012-05-02. Paper No. 1191.
  2. Proposed Water Treatment Residuals Management Process for the Washington Aqueduct: Environmental Impact Statement. Vol. 1. Washington Aqueduct Division. Baltimore District. U.S. Army Corps of Engineers. Washington, D.C.: U.S. Government Printing Office, 2005, p. 3-32. Archived 2013-02-16 at the Wayback Machine Accessed 2012-12-16.
  3. Ways, Harry C. (1996). The Washington Aqueduct: 1852-1992. Baltimore, MD: U.S. Army Corps of Engineers, Baltimore District.
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