FILE - Sean de Guzman, right, snow survey manager for the Department of Water Resources, measures the snow with the help of DWR engineer Jacob Kollen for the final snow survey of the season at Phillips Station on April 3, 2023. A new study finds the snow deluge in California, which quickly erased a two decade long megadrought, was essentially a once-in-a-lifetime rescue from above. The study authors coined the term “snow deluge” for one-in-20-year heavy snowfalls.