The longest drought in 1,200 years may be giving Glen Canyon back. A YouTuber that I follow hikes in remote areas he discovers on Google Earth. One of his recent posts take place in a series of side canyons that within this young man's lifetime were under many feet of water. He mentions some facts that I've read elsewhere. Lake Powell is dropping so low that it is nearing the level that the dam will not be able to generate hydroelectric power. It is conceivable that it may even drop so low that it is unable to to release water into the Colorado River below the dam meaning the Grand Canyon will be dry and Lake Mead will not receive any new water. He also mentions, and I have not verified this, that if all the water currently in Lake Powell was released, it would not be enough to fill up Lake Mead.

YouTube: This Canyon Has Been Submerged for 62 Years. I Backpacked into it (Topo Traveler)