Groundwater pumping is making California’s San Joaquin Valley sink about an inch per year: Study

California’s San Joaquin Valley may be sinking nearly an inch per year due to the over-pumping of groundwater supplies, with resource extraction outpacing natural recharge, a new study has found.  This agriculture-rich region, located within the state’s Central Valley, has been sinking at record-breaking rates over the past two decades, according to the study, published…