2000. Department of Conservation & Development, Contra Costa County. This dataset represents the 10ft contour map of Contra Costa, California. Latest data revision occurred in November 2000 ; Data was mapped and prov...
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2000. Department of Conservation & Development, Contra Costa County. This dataset represents the 50ft contour map within Contra Costa, California. Latest data revision occurred in May 2000 ; Data was mapped and provi...