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Hoover Dam. Hoover Dam, formerly called Boulder Dam, dam in Black Canyon on the Colorado River, at the Arizona-Nevada border, U.S. Constructed between 1930 and 1936, it is the highest concrete arch dam in the United States. It impounds Lake Mead, which extends for 115 miles (185 km) upstream and is one of the largest manmade lakes in the world.
  The world's largest hydroelectric dam is the Three Gorges Dam located on the Yangtze River in China.   Anoth â¦ er famous dam is the Hoover Dam, located on the Colorado River at the boarder of Arizona and Nevada (US Route 93).  Anmother one is Kaptai Dam, Chittagong, Bangladesh.onfidence votes 5.4K. What I've been able to find for the Hoover Dam says ~$50 million in the 1930's, today that's roughly $690 million. The entire Boulder Canyon Project cost around $165 million, which included the Hoover Dam.