This Thursday, July 12, 2018 photo released by Benji Xie shows a helicopter landing to rescue people from flooding on the Havasupai reservation in Supai, Ariz. Rescue workers were evacuating about 200 tourists Thursday who were caught in flash flooding at a popular campground on tribal land near the Grand Canyon where visitors go to see towering blue-green waterfalls. (Benji Xie via AP)
This Thursday, July 12, 2018 photo released by Benji Xie shows a helicopter landing to rescue people from flooding on the Havasupai reservation in Supai, Ariz. Rescue workers were evacuating about 200 tourists Thursday who were caught in flash flooding at a popular campground on tribal land near the Grand Canyon where visitors go to see towering blue-green waterfalls. (Benji Xie via AP)
This Thursday, July 12, 2018 photo released by Benji Xie shows a helicopter landing to rescue people from flooding on the Havasupai reservation in Supai, Ariz. Rescue workers were evacuating about 200 tourists Thursday who were caught in flash flooding at a popular campground on tribal land near the Grand Canyon where visitors go to see towering blue-green waterfalls. (Benji Xie via AP)

Flooding cancels hundreds of trips to coveted waterfalls

July 13, 2018 05:57 PM