Read this excerpt from the State of California, Climate Change Change Center.
A first-of-its-kind multi-sector strategy to help guide California's efforts in adapting to climate change impacts is available below. In cooperation and partnership with multiple state agencies, the 2009 California Climate Adaptation Strategy summarizes the best known science on climate change impacts in seven specific sectors and provides recommendations on how to manage against those threats.
Read more... http://www.climatechange.ca.gov/adaptation/index.html
California Governor Executive Order S-13-08, http://gov.ca.gov/press-release/11035, a proactive step toward planning for Climate Change impact.
Sample E.O. S-13-08 sector impact, transportation, http://www.climatechange.ca.gov/adaptation/infrastructure/2008-12-05_meeting/CAS_INF_PDF.pdf.