Hoover Dam was known as Boulder Dam. This means that the foundation relies on gravity to keep the structure from falling. Hoover Dam was built from 1931 to 1936. Frank Crowe was the general manager of the building. The Hoover Dam site is visited by millions of people who will continue to provide energy to many cities each year. Another term people call Hoover Dam is a concrete arch gravity dam in the Black Canyon of the Colorado River. It is also on the border between Arizona and Nevada. This dam was originally named and known as the Boulder Dam, but in 1947 it was renamed in honor of President Herbert Hoover. This dam was 726 feet high and 1,244 feet long, Hoover Dam was one of the largest man-made structures in the world at that time. Hoover Dam was built between 1931 and 1936, a time when the Great Depression was at its highest peak. The construction of Hoover Dam required many efforts involving thousands of workers and a hundred lives. Hoover Dam was the most expensive engineering project in United States history at this time. Between the years 1931 and 1935 the cost was approximately $49 million. The idea of ​​building a dam was to provide water to Southern California. Secretary of Commerce Herbert Hoover had started a committee and assigned the task of helping and develop a plan that will provide water to neighboring states of the Colorado River. As a result, a plan, the Colorado River Compact, was initiated in 1922, which called for the construction of a dam spanning the waters of the Colorado. President Calvin Coolidge approved the project in 1928. The following year, becoming president of the United States Hoov...... middle of paper...... concrete curve looming between the cliffs. “People were walking along the top of the dam. They were so small they looked like fleas." Being so high off the ground looking at the dam can be a scary sight if you have a fear of heights. So, as you can see, it takes a lot of courage to do what these workers did, especially knowing that they can lose their lives working in a job like this. Just recently this year they expanded the Hoover Dam Bridge. The bridge is 1,900 feet long, making it the seventh highest bridge in the world. The construction of the bridge cost approximately 240 million dollars and involved 1,200 workers and 300 engineers. As you can see, Hoover Dam is used for multiple reasons and was built during the worst economic time in the United States. So if you were Herbert Hoover, you would continue to maintain the dam through the Great Depression??.