Daniel Swain in CNN—Thousands of acres are underwater in California, and the flood could triple in size this summer

“The ground is literally sunk in some places by 10 or 15 feet over the past decade,” said Daniel Swain, a climate scientist at the University of California at Los Angeles. “That has literally changed the topography of the historical lakebed. Some places are lower even than they were the last time there was a big flood event.”