Browsing Category Archives

Based on “Water Supply and Drought”.

California’s groundwater depletion causes ground to sink in Central Valley

California’s Central Valley, according to researchers, is in a “perfect storm,” whereby drought years, rising temperatures and subsiding clay are causing the ground to collapse. The region’s groundwater has been largely depleted after the state’s $50 billion agricultural industry resorted to pumping during the drought.

How clean is US groundwater? Researchers remain uncertain

Although the U.S. federal government has monitored the country’s groundwater for the last 30 years, scientists say that only now can they begin to understand long-term pollution in the largest aquifers. The U.S. Geological Survey’s National Water Quality Assessment says concentrations of chloride and sodium are on the increase, and in California, nitrate levels are climbing, according to Circle of Blue.