Deluges during the atmospheric river give reservoirs a pleasant boost . But much more is needed after years of drought , NASA says in a new analysis . The drought has dug so deep in the past three years that it has tapped into groundwater . The study found that water stored by glaciers and snow on land has been declining since 2000. Water reserves have fallen so far , California is depleting its groundwater .
Deluges during the atmospheric river give reservoirs a pleasant boost . But much more is needed after years of drought , NASA says in a new analysis . The study found that water stored by glaciers and snow on land has been declining since 2000. Water reserves have fallen so far , California is depleting its groundwater .