According to The Mercury News, California’s water supply is reliant on storms off the Pacific Ocean that the past two winters did not provide. Instead, the past two years were the driest in half a century, affecting reservoir levels, increasing wildfire risk, and making water supplies more tenuous. Future predictions indicate that increased temperatures will create record dry years and wet years. California may become more dependent on storing floodwater in aquifers during the wet years so that it can be utilized in the dry years.
Read more on this story from The Mercury News.