Almost 100 years ago, seven states signed the Colorado River Compact, which lays out how much river water each state gets. If the river keeps drying up, that agreement could soon be broken.
Why water levels in megadrought-impacted Southwestern states have some experts concerned go.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from go.com Daily Mail and Mail on Sunday newspapers.