Dalecarlia Reservoir

Dalecarlia Reservoir
Location	Bethesda, Maryland / Washington, D.C.
Coordinates	38°56′32.83″N 77°6′37.05″W / 38.9424528°N 77.1102917°W / 38.9424528; -77.1102917Coordinates: 38°56′32.83″N 77°6′37.05″W / 38.9424528°N 77.1102917°W / 38.9424528; -77.1102917
Lake type	Reservoir
Primary inflows	Washington Aqueduct
Basin countries	United States
Surface area	50 acres (20 ha)

Dalecarlia Reservoir is the primary storage basin for drinking water in Washington, D.C., fed by an underground aqueduct in turn fed by low dams which divert portions of the Potomac River near Great Falls and Little Falls.^[1] The reservoir is located between Spring Valley and the Palisades, two neighborhoods in Northwest Washington, and Brookmont, a neighborhood in Montgomery County, Maryland.

The 50-acre (200,000 m²) reservoir was built by the U.S. Army Corps of Engineers as part of the Washington Aqueduct project in the mid-19th century. Reservoir construction was completed in 1858. Initially the reservoir provided water to the city from the adjacent Little Falls Branch until the aqueduct construction was completed. Regular water service from the Potomac River source through the aqueduct commenced in 1864. The reservoir was modified in 1895 and 1935 to improve water quality and increase water supply.^[2]

The Capital Crescent Trail runs adjacent to the reservoir and through the center of the pumping campus. The boundary between Maryland and the District of Columbia passes through the reservoir. An historic D.C. boundary marker (Northwest No. 5) is located in a woodland east of the reservoir. Another (Northwest No. 4) is located a short distance east of the Capital Crescent Trail, near the Dalecarlia water purification facility.

The reservoir is maintained by the Washington Aqueduct division of the Army Corps of Engineers.

See also

• Georgetown Reservoir
• McMillan Reservoir
• Washington Aqueduct

References

1. ^ "Facilities". DC Water and Sewer Authority (DCWASA). http://www.dcwasa.com/about/facilities.cfm. 
2. ^ Ways, Harry C. (1996), The Washington Aqueduct: 1852-1992, Baltimore, MD: U.S. Army Corps of Engineers, Baltimore District.

External links

• Washington Aqueduct Division - U.S. Army Corps of Engineers

Potomac River system Cities and towns | Bridges | Islands | Tributaries | Variant names District of Columbia | Maryland | Pennsylvania | Virginia | West Virginia Streams shown as: Major tributaries • subtributaries • (subsubtributaries) • (subsubsubtributaries)

Tidal Potomac River Gulf Branch | Donaldson Run | Maddox Branch | Windy Run | Spout Run | Foundry Branch | Rock Creek | Boundary Channel | Tiber Creek | Rocky Run | Washington Channel | Anacostia River • Pope Branch • Watts Branch • Hickey Run • Northwest Branch • (Sligo Creek) • Northeast Branch • (Paint Branch) | Four Mile Run | Oxon Creek | Hunting Creek • Cameron Run | Broad Creek | Henson Creek | Swan Creek | Piscataway Creek | Little Hunting Creek | Dogue Creek | Accotink Creek • Daniels Run | Pohick Creek | Pomonkey Creek | Occoquan River • Bull Run • Broad Run • Cedar Run | Neabsco Creek | Powells Creek | Mattawoman Creek | Chicamuxen Creek | Quantico Creek | Little Creek | Chopawamsic Creek | Tank Creek | Aquia Creek | Potomac Creek • Accokeek Creek | Nanjemoy Creek | Port Tobacco River | Popes Creek (Maryland) | Gambo Creek | Piccowaxen Creek | Upper Machodoc Creek | Cuckold Creek | Wicomico River | Monroe Creek | Mattox Creek | Popes Creek (Virginia) | St. Marys River | Yeocomico River | Coan River | Hull Creek Upper Potomac River North Branch Potomac River | South Branch Potomac River | Town Creek | Little Cacapon River • North Fork Little Cacapon River • South Fork Little Cacapon River | Fifteenmile Creek | Sideling Hill Creek | Cacapon River • Lost River • Trout Run • Capon Springs Run • Dillons Run • Edwards Run • Mill Branch • North River • (Grassy Lick Run) • (Tearcoat Creek) • (Bearwallow Creek) | Sir Johns Run | Warm Spring Run | Tonoloway Creek • Little Tonoloway Creek | Sleepy Creek • Meadow Branch | Licking Creek | Cherry Run | Back Creek • Hogue Creek • Isaacs Creek • Tilhance Creek | Little Conococheague Creek | Conococheague Creek • Back Creek | Opequon Creek • Abrams Creek • Mill Creek • Middle Creek • Tuscarora Creek (West Virginia) | Antietam Creek | Shenandoah River | Little Catoctin Creek | Catoctin Creek (Virginia) | Catoctin Creek (Maryland) | Tuscarora Creek (Maryland) | Monocacy River • Rock Creek • Marsh Creek • Alloway Creek • Toms Creek • (Middle Creek) • Double Pipe Creek • (Big Pipe Creek) • (Little Pipe Creek) • Owens Creek • Tuscarora Creek • Carroll Creek • Linganore Creek • Israel Creek • Double Pipe Creek • Bush Creek • Ballenger Creek • Bennett Creek | Little Monocacy River | Goose Creek • Little River | Broad Run (Virginia) | Sugarland Run | Broad Run (Maryland) | Seneca Creek • Dry Seneca Creek • Little Seneca Creek • Great Seneca Creek | Difficult Run | Cabin John Creek | Dead Run | Little Falls Branch | Pimmit Run | Rock Run | Watts Branch | Muddy Branch Shenandoah River North Fork Shenandoah River • Cedar Creek • Smith Creek | South Fork Shenandoah River • North River • (Middle River) • South River North Branch Potomac River Stony River | Abram Creek | Savage River | Georges Creek • Laurel Run | New Creek | Limestone Run | Warrior Run | Wills Creek • Brush Creek • Little Wills Creek | Evitts Creek | Patterson Creek • Mill Creek | Dans Run | Green Spring Run South Branch Potomac River North Fork South Branch Potomac River • Mill Creek • Seneca Creek | South Fork South Branch Potomac River • Kettle Creek | Lunice Creek | Mill Run | Mill Creek | Big Run | Buffalo Creek Lakes and reservoirs Lake Accotink | Lake Anne | Lake Artemesia | Lake Bernard Frank | Lake Braddock | Breckenridge Reservoir | Brushy Fork Lake | Burke Lake | Dalecarlia Reservoir | Georgetown Reservoir | Jennings Randolph Lake | Kingman Lake | Little Seneca Lake | McMillan Reservoir | Mount Storm Lake | Lake Needwood | Sleepy Creek Lake | Stony River Reservoir | Tidal Basin | Trout Pond | Warden Lake