(Trent Nelson | The Salt Lake Tribune) A tour boat at Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.(Trent Nelson | The Salt Lake Tribune) A tour boat at Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.(Trent Nelson | The Salt Lake Tribune) The Colorado River near Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.(Trent Nelson | The Salt Lake Tribune) A raft on the Colorado River at Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.(Trent Nelson | The Salt Lake Tribune) A raft on the Colorado River at Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.(Trent Nelson | The Salt Lake Tribune) River guides and clients before a Grand Canyon raft trip, at Lees Ferry in Marble Canyon, Ariz., on Tuesday, May 20, 2025.