The Colorado River has been in severe decline for years, in part, because a historic drought has reduced rainfall and snowpack. These are all factors above the river.However, the groundwater lurking beneath the Earth’s surface also plays a big role in the river’s levels. Groundwater can be stored for thousands of years, according to Fred Tillman, a research hydrologist with
USGS: A Century of Watching the Colorado River goldrushcam.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from goldrushcam.com Daily Mail and Mail on Sunday newspapers.
A Century of Watching the Colorado River usgs.gov - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from usgs.gov Daily Mail and Mail on Sunday newspapers.