Hoover Dam explosion reported in tourist video

( Fox )

A tourist at the Hoover Dam shared video Tuesday showing a small explosion and black smoke.

"My goodness, something's just blown up," a woman is heard saying in the video first shared by Kristy Hairston, who said she was touring the dam Tuesday and heard an explosion.

A male's voice, perhaps the security guard or tour guide, is also heard noting the explosion and fire at the dam below.

An account for Boulder City, Nevada, later tweeted that the fire was extinguished before the Boulder City Fire Department arrived at the scene.

Fox News Digital reached out to the Bureau of Reclamation, the federal agency under the U.S. Department of Interior, which runs the Hoover Dam, for more information on the incident.

Additional details regarding the circumstances of the incident captured on cell phone camera at the hydroelectric power plant located in Clark County, Nevada, were not immediately clear.

The Hoover Dam, constructed between 1930 and 1936, sits in the Black Canyon of the Colorado River on the border between the Nevada and Arizona and is the highest concrete arch dam in the United States.

The dam forms Lake Mead, the country's largest man-made water reservoir, which serves water to the states of Arizona, California, Utah, Colorado and Nevada, as well as parts of Mexico.

It provides fresh water to nearly 20 million people and farmland.