Boulder Dam Construction

Alisha McTaggart - 2nd hour


The construction of the Boulder (Hoover) Dam occurred from 1931 and 1936, which was during the Great Depression.

Time Frame/Exact Date

  • 1928 - Congress authorized the project of constructing a dam between the Black Canyon.
  • 1931 - Construction was started by Six Companies, Inc.
  • 1936 - Construction finished nearly two years ahead of schedule.
  • September 30, 1935 - Boulder Dam was dedicated to President Herbert Hoover.
  • October 2010 - Hoover Dam Bypass opened.


  • Controls floods
  • Provides irrigation water to farmers
  • Produces hydroelectric power
  • Provides jobs
  • Killed over 100 people during construction
  • Started the decline of the estuarine (marine life) ecosystem
  • Sparked controversy during the naming process
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The U.S. government was searching for a place to put a damn that would control floods, provide irrigation water, and produce hydroelectric power.


  • Colorado River was controlled for the first time in history.
  • Farmers had a dependable water supply.
  • Cities received an inexpensive source of electricity.


  • Killed off thousands of species of fish and other marine life.
  • Killed hundreds of people during construction.
  • Naming sparked controversy.


Clark County, Nevada/Mohave County, Arizona in the Black Canyon of the Colorado River.
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Thousands of people were impacted, including workers and their families and people living in cities that were being provided hydroelectricity.
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Government involvement

  • Presidents - Franklin Roosevelt and Herbert Hoover
  • Government branches - U.S. Bureau of Reclamation
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The Construction of Hoover Dam AKA Boulder Dam