11 Facts About Hoover Dam

Hoover Dam is a concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border between the U S states of Nevada and Arizona.

Hoover Dam is a major tourist attraction, with 7 million tourists a year.

The original timetable called for Boulder City to be built before the dam project began, but President Hoover ordered work on the dam to begin in March 1931 rather than in October.

Hoover Dam agreed to ask the Federal government to supplement the pay, but no money was forthcoming from Washington.

Concrete cores were removed from the dam for testing in 1995; they showed that "Hoover Dam's concrete has continued to slowly gain strength" and the dam is composed of a "durable concrete having a compressive strength exceeding the range typically found in normal mass concrete".

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Hoover Dam concrete is not subject to alkali–silica reaction, as the Hoover Dam builders happened to use nonreactive aggregate, unlike that at downstream Parker Dam, where ASR has caused measurable deterioration.

Hoover Dam designed sculpted turrets rising seamlessly from the dam face and clock faces on the intake towers set for the time in Nevada and Arizona—both states are in different time zones, but since Arizona does not observe daylight saving time, the clocks display the same time for more than half the year.

True's work on the Hoover Dam was humorously referred to in a poem published in The New Yorker, part of which read, "lose the spark, and justify the dream; but worthy of remark will be the color scheme".

Hoover Dam's works include the monument of dedication plaza, a plaque to memorialize the workers killed and the bas-reliefs on the elevator towers.

Amount of electricity generated by Hoover Dam has been decreasing along with the falling water level in Lake Mead due to the prolonged drought since year 2000 and high demand for the Colorado River's water.

Hoover Dam was recognized as a National Historic Civil Engineering Landmark in 1984.