Washington Aqueduct | |
 The Union Arch Bridge carries the Washington Aqueduct across Cabin John Creek in 2008 | |
  Dalecarlia Reservoir & Treatment Plant | |
| Location | 5900 MacArthur Blvd., NW Washington, D.C. |
|---|---|
| Coordinates | 38°56′15″N 77°6′51″W / 38.93750°N 77.11417°W |
| Built | 1853-1864 |
| Architect | Montgomery C. Meigs |
| NRHP reference No. | 73002123 |
| Significant dates | |
| Added to NRHP | September 8, 1973 |
| Designated NHL | November 7, 1973 |
The Washington Aqueduct is an aqueduct that provides the public water supply system serving Washington, D.C., and parts of its suburbs, using water from the Potomac River. One of the first major aqueduct projects in the United States, it was commissioned by the U.S. Congress in 1852, and construction began in 1853 under the supervision of Montgomery C. Meigs and the U.S. Army Corps of Engineers. Portions of the aqueduct went online on January 3, 1859, and the full pipeline began operating in 1864.[1]: 68
The system is owned and operated by the U.S. Army Corps of Engineers and has been in continuous use ever since. It is listed as a National Historic Landmark. The Union Arch Bridge, which carries a portion of the aqueduct, is also listed as a Historic Civil Engineering Landmark.
- ^ Ways, Harry C. (1996). The Washington Aqueduct: 1852-1992. Baltimore, MD: U.S. Army Corps of Engineers, Baltimore District.