Hoover Dam – dam concrete gravity-arch type, in which the water load is carried by both gravity action and horizontal arch action. The dam was built in vertical columns of blocks that varied in size from about 60 feet square at the upstream face of the dam to about 25 feet square at the downstream face. It was built in the Black Canyon on the Colorado River in the United States, on the border states of Arizona and Nevada. It was opened in 1936. Hoover Dam built during the Depression, it took less than five years, in a harsh and barren land, to build the largest dam of its time. Now, years later, Hoover Dam still stands as a world-renowned structure. 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. These projects control floods; store water for irrigation, municipal, and industrial use; and provide hydroelectric power, year-round recreational opportunities, and fish and wildlife habitat.
lakes and riversNevada, United StatesLas Vegas, Nevada, United States