"L.A. still gets nearly 90 percent of its drinking water from out-of-town resources, just as it has for more than a century. But the Sierra Nevada snowpack could shrink by as much as 90 percent by 2100, experts say. Runoff already peaks 10 to 15 days earlier today than it did 50 years ago, according to a 2008 Purdue University study.
Meanwhile, aquifers along the coast of Los Angeles County are already experiencing “seawater intrusion,” according to the National Resources Defense Council, which last year called out L.A. officials for lagging behind other big cities in planning for such climate change-related effects. The group warns that a 55-inch sea level rise would double the number of toxic waste sites, power plants and other critical infrastructure situated inside L.A. County’s 100-year flood zones.”
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