Scientists have found several large aquifers in California
California’s Central Valley has three times more freshwater in underground aquifers than previously thought, drinking water that could help the state weather future drought and fortify itself against a changing climate, according to a new Stanford University study.
But tapping that water, locked thousands of feet beneath the ground, will be expensive and comes with an enormous risk — it could cause the valley floor to sink, according to the study, published Monday in the Proceedings of the National Academy of Sciences. Sinking land in the Central Valley is threatening roads, homes and other infrastructure, and reduces the amount of water some aquifers can hold.
“It’s not often that you find a ‘water windfall,’ but we just did,” said study co-author Rob Jackson, an earth system science professor at Stanford University. “California’s already using an increasing amount of groundwater from deeper than 1,000 feet. Our goal was to estimate how much water is potentially available.”