One recent study of flood exposure in Los Angeles suggests that the population exposed to dangerous flooding, or a flooding event with 1 percent annual probability, is between 10 and 40 times greater than US government maps show. … The numbers of at-risk Angelenos surprised even the researchers …. said Brett Sanders, [professor and] director of the Flood Lab at the University of California, Irvine. … Already, the maps are leaving their mark on Los Angeles. Following the study’s publication, the County Board of Supervisors passed a motion directing the city’s public works department to develop a plan to address flood risks and inequities, while improving the city’s water conservation and drought measures. It’s an “impact that you could only dream of,” says Sanders, “seeing your work immediately register with leaders who say we need to act on this problem.” Read More