Hoover Dam

Also known as: Boulder Dam
US Hwy 93, Boulder City, NV

Concrete arch gravity dam built 1931 - 1935


Hoover Dam

Photo taken by Richard Doody in August 2011



Hoover Dam is a concrete arch gravity dam across Black Rock Canyon on the Colorado River in Clark County, NV and Mohave County, AZ. The 726 foot high dam was designed by the U.S. Bureau of Reclamation and built by Six Companies Inc., a consortium of Henry J. Kaiser, Bechtel Company, Morrison-Knudsen,Pacific Bridge Company, MacDonald & Kahn Ltd. and J.F. Shea. at a cost of $49,000,000.

The completed structure was formally dedicated on September 30, 1935 by President Franklin D. Roosevelt.


Built 1935 (572)
Built during 1930s (5,351)
Clark County, Nevada (99)
Dam (144)
In operation (2,249)
Nevada (877)

Update Log 

  • May 22, 2020: New photos from Bill Eichelberger
  • May 2, 2018: Added by Richard Doody