Hoover Dam

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Hoover Dam
Ansel Adams - National Archives 79-AAB-01.jpg
Hoover Dam by Ansel Adams, 1942
Official nameHoover Dam
LocationClark County, Nevada / Mohave County, Arizona, U.S.
PurposePower, flood control, water storage, regulation, recreation
StatusOperational
Construction began1931
Opening date1936
(83 years ago)
 (1936)
Construction cost$49 million (1931 budget)
($639 million in 2016 dollars[1])
Owner(s)United States Government
Operator(s)U.S. Bureau of Reclamation
Dam and spillways
Type of damConcrete gravity-arch
ImpoundsColorado River
Height726.4 ft (221.4 m)
Length1,244 ft (379 m)
Elevation at crest1,232 ft (376 m)
Width (crest)45 ft (14 m)
Width (base)660 ft (200 m)
Dam volume3,250,000 cu yd (2,480,000 m3)
Spillway type2 controlled drum-gate
Spillway capacity400,000 cu ft/s (11,000 m3/s)
Reservoir
CreatesLake Mead
Total capacity28,537,000 acre⋅ft (35.200 km3)
Active capacity15,853,000 acre⋅ft (19.554 km3)
Inactive capacity10,024,000 acre⋅ft (12.364 km3)
Catchment area167,800 sq mi (435,000 km2)
Surface area247 sq mi (640 km2)[2]
Maximum length112 mi (180 km)
Maximum water depth590 ft (180 m)
Normal elevation1,219 ft (372 m)
Power Station
Operator(s)U.S. Bureau of Reclamation
Commission date1936–1960
Hydraulic head590 ft (180 m) (Max)
Turbines13× 130 MW
2× 127 MW
1× 68.5 MW
1× 61.5 MW Francis-type
2× 2.4 MW Pelton-type
Installed capacity2,080 MW
Capacity factor23%
Annual generation4.2 TWh (15 PJ)[3]
Website
"Bureau of Reclamation: Lower Colorado Region - Hoover Dam". Archived from the original on 20030622. Check date values in: |archivedate= (help)
Hoover Dam
2017 Aerial view Hoover Dam 4774.jpg
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Nearest cityBoulder City, Nevada
Coordinates36°0′56″N 114°44′16″W / 36.01556°N 114.73778°W / 36.01556; -114.73778Coordinates: 36°0′56″N 114°44′16″W / 36.01556°N 114.73778°W / 36.01556; -114.73778
Built1933
ArchitectSix Companies, Inc. (structural), Gordon Kaufmann (exteriors)
Architectural styleArt Deco
MPSVehicular Bridges in Arizona MPS (AD)
NRHP reference #81000382
Significant dates
Added to NRHPApril 8, 1981
Designated NHLAugust 20, 1985[4]

The Hoover Dam is a large dam on the Colorado River. It is on the border of the states of Arizona and Nevada. The reservoir it made is called Lake Meade. The dam is named after the former US President Herbert Hoover. At first it was called "Boulder Dam", but the name was changed to honor Hoover, who was president when the idea of building the dam started.

References[change | change source]

  1. Inflated values automatically calculated.
  2. "Frequently Asked Questions: Lake Mead". Bureau of Reclamation. Archived from the original on 2012-06-03. Retrieved 2010-07-02.
  3. "Frequently Asked Questions: Hydropower". Bureau of Reclamation. Archived from the original on 2010-03-23. Retrieved 2017-02-22.
  4. "Hoover Dam". National Historic Landmark summary listing. National Park Service. Archived from the original on 2010-07-16. Retrieved 2010-07-04.

Other websites[change | change source]