Demogrqaphic
http://www.library.ca.gov/CRB/97/09/
Flooding risks in the Californis central valley
http://www.water.ca.gov/news/newsreleases/2008/101507challenge.pdf
http://www.waterplan.water.ca.gov/docs/cwpu2013/2013-prd/Vol1_Ch02_ImperativeToInvest_PubReviewDraft_Final_PDFed_wo_JW.pdf
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