Groundwater in the Colorado River basin won't run out — but eventually we won’t be able to get at it, scientists warn

Groundwater in the Colorado River basin won't run out — but eventually we won’t be able to get at it, scientists warn

The Colorado River basin has lost a Lake Mead’s worth of water in the last 20 years — and scientists say we’re passing a "critical point" where pumping groundwater will become too expensive.