Global InformationHoover Dam information
| Hoover Dam | |
|---|---|
 Hoover Dam by Ansel Adams, 1941 | |
| Official name | Hoover Dam |
| Location | Clark County, Nevada/Mohave County, Arizona, U.S. |
| Purpose | Power, flood control, water storage, regulation, recreation |
| Status | Operational |
| Construction began | 1931 |
| Opening date | 1936 |
| Construction cost | $49 million (1931 budget) ($790 million in 2023 dollars[1]) |
| Owner(s) | United States government |
| Operator(s) | U.S. Bureau of Reclamation |
| Dam and spillways | |
| Type of dam | Concrete gravity-arch dam |
| Impounds | Colorado River |
| Height | 726.4 ft (221.4 m) |
| Length | 1,244 ft (379 m) |
| Elevation at crest | 1,232 ft (376 m) |
| Width (crest) | 45 ft (14 m) |
| Width (base) | 660 ft (200 m) |
| Dam volume | 3,250,000 cu yd (2,480,000 m3) |
| Spillway type | 2 controlled Drum-Gate, Side channel |
| Spillway capacity | 400,000 cu ft/s (11,000 m3/s) |
| Reservoir | |
| Creates | Lake Mead |
| Total capacity | 28,537,000 acre⋅ft (35.200 km3) |
| Active capacity | 15,853,000 acre⋅ft (19.554 km3) |
| Inactive capacity | 10,024,000 acre⋅ft (12.364 km3) |
| Catchment area | 167,800 sq mi (435,000 km2) |
| Surface area | 247 sq mi (640 km2)[2] |
| Maximum length | 112 mi (180 km) |
| Maximum water depth | 590 ft (180 m) |
| Normal elevation | 1,219 ft (372 m) |
| Power Station | |
| Operator(s) | U.S. Bureau of Reclamation |
| Commission date | 1936–1960 |
| Hydraulic head | 590 ft (180 m) (Max) |
| Turbines |
|
| Installed capacity | 2,078.8 MW |
| Capacity factor | 23% |
| Annual generation | 3.3 TWh (12 PJ) (2020) [3] |
| Website Bureau of Reclamation: Lower Colorado Region - Hoover Dam | |
Hoover Dam | |
U.S. National Register of Historic Places | |
U.S. National Historic Landmark | |
 | |
    | |
| Nearest city | Boulder City, Nevada |
| Coordinates | 36°0′56″N 114°44′16″W / 36.01556°N 114.73778°W |
| Built | 1933 |
| Architect | Six Companies, Inc. (structural), Gordon Kaufmann (exteriors) |
| Architectural style | Art Deco |
| MPS | Vehicular Bridges in Arizona MPS (AD) |
| NRHP reference No. | 81000382 |
| Significant dates | |
| First Power Generation | September 11, 1936[6] |
| Added to NRHP | April 8, 1981[4] |
| Designated NHL | August 20, 1985[5] |
Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U.S. states of Nevada and Arizona. Constructed between 1931 and 1936, during the Great Depression, it was dedicated on September 30, 1935, by President Franklin D. Roosevelt. Its construction was the result of a massive effort involving thousands of workers, and cost over 100 lives. In bills passed by Congress during its construction, it was referred to as the Hoover Dam, after President Herbert Hoover, but was named the Boulder Dam by the Roosevelt administration. In 1947, the name Hoover Dam was restored by Congress.
Since about 1900, the Black Canyon and nearby Boulder Canyon had been investigated for their potential to support a dam that would control floods, provide irrigation water and produce hydroelectric power. In 1928, Congress authorized the project. The winning bid to build the dam was submitted by a consortium named Six Companies, Inc., which began construction in early 1931. Such a large concrete structure had never been built before, and some of the techniques used were unproven. The torrid summer weather and lack of facilities near the site also presented difficulties. Nevertheless, Six Companies turned the dam over to the federal government on March 1, 1936, more than two years ahead of schedule.
Hoover Dam impounds Lake Mead and is located near Boulder City, Nevada, a municipality originally constructed for workers on the construction project, about 30 mi (48 km) south-east of Las Vegas, Nevada. The dam's generators provide power for public and private utilities in Nevada, Arizona, and California. Hoover Dam is a major tourist attraction, with 7 million tourists a year.[7] The heavily traveled U.S. Route 93 (US 93) ran along the dam's crest until October 2010, when the Hoover Dam Bypass opened.
- ^ Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.
- ^ Cite error: The named reference
meadfaqwas invoked but never defined (see the help page). - ^ "What you need to know about Lake Mead's falling water levels". June 27, 2021.
- ^ Cite error: The named reference
nrhpwas invoked but never defined (see the help page). - ^ Cite error: The named reference
nhlsumwas invoked but never defined (see the help page). - ^ "Construction of Hoover Dam". Water and Power Associates.
- ^ "Nevada and Arizona: Hoover Dam (U.S. National Park Service)". www.nps.gov. Retrieved July 14, 2022.