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Hist 140   hoover dam
Hist 140   hoover dam
Hist 140   hoover dam
Hist 140   hoover dam
Hist 140   hoover dam
Hist 140   hoover dam
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Hist 140 hoover dam


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  • 1. Hoover Dam Andrew Lelja History 140 70979
  • 2. Hoover Dam
    • Hoover dam, once known as Boulder Dam, is a concrete anti-gravity dam built in the Black Canyon of the Colorado River, on the border between Nevada and Arizona.
    • The construction took place during 1931-1936, and involved thousands of workers and cost over a hundred lives.
    • It was dedicated by President Franklin Roosevelt on September 30, 1935.
  • 3. Hoover Dam
    • As the United States developed the Southwest, the Colorado River was seen as a potential source of irrigation water.
    • They looked at many potential site in the Lower Colorado area starting in the early 1900s, but realized the site’s were not the best.
    • In 1922 The Reclamation Service researched the Black Canyon area and wrote a report stating how this area would be ideal for a dam to produce hydroelectric power.
    • There were many who opposed the dam, and fought for years to not let it be built.
  • 4. Hoover Dam
    • Even before Congress approved the Boulder Canyon Project, the Bureau of Reclamation was considering what kind of dam should be used.
    • They decided on an anti-gravity dam, that would be 660 feet thick at the bottom, and tapering to 45 feet thick at the top.
    • It would present a convex face towards the water above the dam, allowing the curving arch of the dam to transmit the waters force into the rock walls of the canyon.
    • On January 10, 1931, the Bureau made the bid documents available to interested parties, at five dollars a copy.
    • The government would provide the materials, but the contractor was to prepare the site and build the dam.
  • 5. Hoover Dam
    • The Joint Venture called Six Companies, Inc., were the ones to build the damn.
    • The companies consisted of The Wattis Brothers, Morrison-Knudsen, Pacific Bridge Company, Henry J. Kaiser & W. A. Betchel Company, MacDonald & Kahn Ltd, and the J.F. Shea Company.
    • Their bid of 48,890,955 dollars was the lowest of three bids.
    • They built a new city at the dam site called Boulder City, Nevada, and this would be the main headquarters for the project.
    • In September of 1930, they built a railroad line connecting Boulder City to Las Vegas.
  • 6. Citations
    • Hoover Dam - Wikipedia, the free encyclopedia. (n.d.). Wikipedia, the free encyclopedia . Retrieved December 2, 2011, from
    • Photos. (n.d.). Hoover Dam Review . Retrieved December 2, 2011, from http://