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2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, and 2013. California. Department of Water Resources. This line shapefile represents changes in groundwater levels in California. These data represent groundwater changes between spring 2003 and spring... California. Department of Water Resources.
1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, and 2008. Environmental Systems Research Institute (Redlands, Calif.) and United States. Bureau of Transportation Statistics. This line shapefile represents rural and urban interstate highways. U.S. National Transportation Atlas Interstate Highways is part of the National ... Environmental Systems Research Institute (Redlands, Calif.).