The map above shows the location of the Grand Canyon flash flood and the rainfall outlook for the area over the next three days. (AP Digital Embed)

People stand at the rim of the Grand Canyon as rain moves into the canyon, Monday, Aug. 31, 2026, in Grand Canyon National Park, Ariz. (AP Photo/John Locher)

Tourists check out of the El Tovar Hotel as lodging along the rim of the canyon was shut down due to flooding, Monday, Aug. 31, 2026 at Grand Canyon National Park, Ariz. (AP Photo/Josh Biggs)

Bright Angel Canyon, middle left, the scene of flash floods, meets with the Colorado River in the Grand Canyon, Monday, Aug. 31, 2026, at Grand Canyon National Park, Ariz. (AP Photo/John Locher)

Buildings are seen in a flood damaged Bright Angel Canyon the Grand Canyon, Monday, Aug. 31, 2026, in Grand Canyon National Park, Ariz. (AP Photo/John Locher)

FILE - A section of pipeline that brings water to the South Rim of Grand Canyon National Park is seen below Bright Angel Lodge in Arizona, Aug. 30, 2024. (AP Photo/Ty ONeil, File)

In the photo of a computer screen, a Google map showing Lake Ontario renamed as Lake America is seen Sunday, Aug. 30, 2026, in St. Louis. (AP Photo/Jeff Roberson)

Venezuelans protest against President Donald Trump's deal giving the United States a stake in Venezuela’s oil reserves in Caracas, Saturday, Aug 29, 2026. (AP Photo/Pedro Mattey)