Colorado River Basin Faces Severe Groundwater Depletion

Research from Virginia Tech reveals an unprecedented pattern of groundwater loss across the Colorado River Basin. While the Lower Basin historically saw greater declines, the Upper Basin experienced a rapid depletion of 4.6 trillion gallons between 2020 and 2022, nearly double the loss of the Lower Basin.

Using NASA satellite data, scientists found that surface-water shortages are increasingly driving groundwater extraction as a buffer. Experts warn that current management strategies must move beyond surface-level monitoring to address the critical decline of groundwater reserves, which threatens the stability of the entire basin's water supply.

Editor's note: The brief provides a clear summary of the research findings, including the specific figures and the shift in hydrological patterns.