The death toll from flash floods that have struck the western state of Utah rose to 15 with five people still missing, authorities said.
Twelve of the victims were from two families who were in two vehicles caught off guard Monday afternoon by raging waters in the small town of Hildale.
Further north, three people were killed by flash flooding in Zion National Park and four remain missing, authorities said Tuesday.
"Rangers received a report of a group of seven individuals canyoneering in Keyhole Canyon shortly before the flooding began (Monday afternoon)," emergency officials said in a statement, adding that rescue efforts were being hampered by continued rain.
A flash flood warning was still in effect at the park on Tuesday, with rivers and streams swelling to dangerous levels.