Gee, putting a gazillion people into a desert environment drawing water from one river...gee, what could go wrong?
I also read the river compact was based on a faulty assumption of how much water actually flows; they based it on abnormally wet years and thought the river flowed at 16.4 acre-feet per year when it's really only 12.4.
This time-lapse video is remarkable, showing the reduction in size of Lake Mead correlating directly to the growth in Las Vegas Metro area, from 1 million people to today's 3 million.
Link: https://www.facebook.com/share/r/1BhYu9Jq87/