Hoover Dam:
Taming the Colorado River

The Hoover Dam is one of the most ambitious and famous engineering projects of the 20th century. Built during the Great Depression in the narrow Black Canyon on the border between Nevada and Arizona, it not only tamed the wild waters of the Colorado River but also gave a powerful boost to the development of the entire American Southwest. Today, this monumental concrete structure attracts millions of tourists from around the world.

The History of Its Construction: A Feat of the Great Depression Era

In the early 20th century, frequent flooding of the Colorado River destroyed farmland, while during dry periods the region suffered from water shortages. In 1928, the U.S. Congress approved the dam construction project, and work began in 1931. This period coincided with a severe economic crisis, so thousands of workers from across the country flocked to the construction site.

Construction took place under incredibly harsh conditions: in the summer, temperatures in the canyon exceeded 40 degrees, and large-scale work involving concrete and explosives required the utmost caution. Despite all the difficulties, the dam was completed two years ahead of schedule – in 1936. The dam was named in honor of the 31st U.S. President, Herbert Hoover, who made a key contribution to the organization of the project.

Engineering Grandeur and Scale

Even after nearly a century, the Hoover Dam continues to impress with its technical specifications:

• Design: It is an arch-gravity dam 221 meters high (equivalent to a 70-story building) and 379 meters long. It holds back a colossal volume of water thanks to its own enormous mass and the arches’ anchorage in the rocky walls of the canyon.
• Scale of Concrete Work: More than 3.3 million cubic meters of concrete were used in its construction. If this concrete had been poured into a single monolithic mass without a special system of cooling pipes, it would have taken more than 120 years to cool and harden.
• Lake Mead: The dam created the largest man-made lake in the United States—Lake Mead. It supplies water and electricity to millions of residents in Nevada, Arizona, and California, and powers the lights of nearby Las Vegas.

A spectacular view and the bypass bridge

For a long time, a highway ran right along the top of the dam, causing massive traffic jams here. In 2010, the Mike O’Callaghan–Pat Tillman Memorial Bridge opened nearby. This high-span arch bridge literally hovers over the canyon at a height of 270 meters.

It is from the bridge’s pedestrian walkway that you get that classic, postcard-perfect view of the entire dam and reservoir. Looking at the night and day photos taken from this vantage point, it’s easy to appreciate the incredible contrast between the rugged desert cliffs and the austere elegance of the man-made concrete wall.