One man is dead and another is still missing after a slot canyon in southern Utah suddenly flooded on Tuesday.

Kane County Sheriff’s Lt. Allen Alldredge said the two men were part of a group of three hiking near the Utah-Arizona border.

The third man was rescued and was being treated for hypothermia and other injuries after days of exposure.

Three other groups of hikers, 11 people total, needed rescuing Tuesday because of the floodwaters.

The sheriff’s office said the spouse of a hiker called Monday to report that they had not returned home from a hike that they started last Friday. The three men were on a multi-day hike through Buckskin Gulch in the Glen Canyon National Recreation Area, which is more than 20 miles of narrow canyon that offers few exit points.

Helicopter searchers located what appeared to be a campsite.

“They were able to from the air ... find some areas where it looked like camping equipment, a backpack,” Alldredge said.

One man was pulled from the water with “serious health problems at that time, being cold and in the water for three days and struggling with that,” Alldredge said.

Searchers then found the body of the deceased man.

Authorities said recent storms in the western United States raised water levels in the canyons. Levels went even higher after additional flooding this week due to more rain and the melting of the region’s snowpack as spring ramps up.

None of the hikers’ names were released, but the sheriff’s office said the dead hiker was from Tampa, Fla.

With News Wire Services