Hoover Dam is 726 feet (221 metres) high and 1,244 feet (379 metres) long at the crest. The thickness of the dam’s base is 660 feet, which is equivalent to 2 football stadiums.

Construction of the Hoover Dam, on the Nevada-Arizona border, began on this day in history, July 7, 1930. It covers over 220 acres and is a National Historic Landmark.

A picture shows the newly completed Hoover Dam and Lake Mead on the Colorado River, in 1935. Hulton Archive/Getty. According to Glennon, completing the crucial reservoir was not an easy feat.

Saturday commemorates the 89th anniversary of the Hoover Dam's completed construction, considered by most experts "a modern miracle" and one of the most visited sites in the world. The 726-foot ...

The Hoover Dam is the most famous such example in North America, and for good reason. Built between 1931 and 1936 during the Great Depression, the project was truly a feat of engineering for the time.

Hoover Dam is 726 feet (221 metres) high and 1,244 feet (379 metres) long at the crest. The thickness of the dam's base is 660 feet, which is equivalent to 2 football stadiums.