Defending San Diego County against rising seas would cost about $1 billion, according to a new study that estimated that the cost of coastal armoring would be at least $22 billion for California, and more than $400 billion for the United States as a whole. And that’s just a “minimum down payment for short-term defense against rising seas in California,” says the study released today by the Washington, D.C.-based Center for Climate Integrity and the environmental engineering firm Resilient Analytics.
