Climate change is decreasing water level extremes in reservoirs across the country. Longer and more severe periods of low storage threaten critical water supplies By Caelan Simeone, USGS Oregon Water Science Center Major water reservoirs across the continental United States are experiencing longer, more severe, and more variable periods of low storage than several decades ago, a new study reports. The problems are most severe in the western and central United States, but reservoirs in the eastern and southeastern United … Continue reading AGU: US water reservoirs are shrinking and becoming less reliable