I only hope that the lake is entirely dry rock at 895 feet. Otherwise, the entire project has long locked some large amount of fresh water from use.
The dead pool is at 895 that’s the lowest outlet to down river Vegas has a water inlet at 860 feet so they still have 35 feet of water depth to drink from. The original base level of the Colorado River gorge at Hoover dam was 725 feet there is a cofferdam that was built to hold the river back during construction that was left in place just up stream of Hoover dam and the space between them has filled in with 100 to 200 feet of fine sediments transported via turbidity currents. The depth to the mud level at Hoover dam face is variable as the sediments compact and dewater they settle and densify. The true bottom of lake mead is around 820 or so.