US water reservoirs are shrinking and becoming less reliable, new study finds

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 States are not immune, the study finds. Overall, reservoirs are less reliable and more vulnerable to climate change than they used to be.