Trudy Thompson of the Red Cross says flooding knocked out a water well pump, its backup generator and broke a sewage line on the Havasupai (hav-uh-SU'-peye) reservation.
Thompson says the shelter in Peach Springs will be open through at least the weekend. She says about 30 people had registered with tribal officials to stay at the shelter and more are expected.
The village of Supai lies deep in a gorge off the Grand Canyon that is accessible only by foot, mule or helicopter. Its blue-green waterfalls make it a popular tourist destination.
Tribal Chairman Don Watahomigie says the reservation temporarily has been closed to visitors.