The Hoover Dam was the first man made structure to exceed the masonry mass of the Great Pyramid of Giza.

The dam contains enough concrete to pave a strip 16 feet wide and 8 inches thick from San Francisco to New York City.

The dam is a National Historic Landmark and has been rated by the American Society of Civil Engineers as one of America's Seven Modern Civil Engineering Wonders.

Hoover Dam borders the State of Nevada and Arizona.

The Hoover Dam is a true testimony to a country's ability to construct monolithic projects in the midst of adverse conditions.

Built during the Depression; thousands of men and their families came to Black Canyon to tame the Colorado River. It took less than 5 years, in a harsh and barren land, to build the largest dam of its time. Now, more than 60 years later, Hoover Dam still stands as a world-renowned structure.

Where is Hoover Dam?

In Black Canyon on the Colorado River, about 30 miles southeast of Las Vegas, Nevada.

How tall is Hoover Dam?

It is 726.4 feet from foundation rock to the roadway on the crest of the dam. The towers and ornaments on the parapet rise 40 feet above the crest.

How much does Hoover Dam weigh?

More than 6,600,000 tons.

What type of dam is Hoover?

A concrete arch-gravity type, in which the water load is carried by both gravity action and horizontal arch action.

How long did it take to build the dam, power plant?

Five years. The contractors were allowed 7 years from April 20, 1931, but concrete placement in the dam was completed May 29, 1935, and all features were completed by March 1, 1936.

How many men were employed during the dam's construction?

An average of 3,500 and a maximum of 5,218, which occurred in June 1934. The average monthly payroll was $500,000.

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