USA HISTORY

Detailed explanation-1: -Flood Control In addition to helping farmers, dams help prevent the loss of life and property caused by flooding. Flood control dams impound floodwaters and then either release them under control to the river below the dam or store or divert the water for other uses.

Detailed explanation-2: -The Boulder Canyon Project Act of 1928 authorized construction of a dam in Boulder, or Black, Canyon, construction of the All-American Canal to connect the Imperial and Coachella Valleys with the Colorado River, and divided the lower basin waters among the lower basin states.

Detailed explanation-3: -Hoover Dam generates, on average, about 4 billion kilowatt-hours of hydroelectric power each year for use in Nevada, Arizona, and California-enough to serve 1.3 million people. From 1939 to 1949, Hoover Powerplant was the world’s largest hydroelectric installation; today, it is still one of the country’s largest.

Detailed explanation-4: -Boulder Canyon was replaced by Black Canyon, when Black Canyon was discovered to be a more suitable spot to place the dam. Having started its legislative life under the moniker of Boulder Canyon, the dam project simply adopted the title Boulder Dam.