Rapid declines are most common in aquifers under croplands in drier regions, including California, the most extensive analysis of groundwater trends so far shows.
With above-average reservoir levels, El Niño, and a dry start to the water year, California is preparing for flood or dry conditions in the months ahead.
Much recent attention towards groundwater sustainability has focused on the heavily overdrafted San Joaquin Valley. However, the Sacramento Valley also needs to bring its groundwater basins into balance and avoid significant undesirable results of pumping.
A recent 23-year-and-counting megadrought on the overallocated Colorado River has led to significant cutbacks for Arizona and junior water rights holders. Could a desalination plant help?