2013. United States. Environmental Protection Agency. Region IX. This polygon shapefile contains nonattainment areas for particulate matter < 10 microns. Nonattainment areas are geographic areas which have not... United States. Environmental Protection Agency. Region IX.
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2000. California. Department of Fish and Game. Marine Resources Region and Geological Survey (U.S.). This point shapefile contains information on names, locations, and types of geographic features in California. The layer source is a custom state e... California. Department of Fish and Game. Marine Resources Region.
2003. California. Department of Water Resources. The polygon shapefile contains the boundaries of 515 groundwater basins and subbasins as defined by the California Department of Water Resources (B... California. Department of Water Resources.
2013. California. Department of Water Resources. This point shapefile represents the depth to groundwater below the ground surface in California during spring of 2013. These data show depth to gro... California. Department of Water Resources.
2014. California. Department of Water Resources. This point shapefile represents the depth to groundwater below the ground surface in California during spring of 2014. These data show depth to gro... California. Department of Water Resources.
2013. California. Department of Water Resources. This point shapefile represents groundwater elevation in California for spring 2013. This layer shows the depth to groundwater values collected fro... California. Department of Water Resources.
2014. California. Department of Water Resources. This point shapefile represents groundwater elevation in California for spring 2014. This layer shows the depth to groundwater values collected fro... California. Department of Water Resources.
2013 and 2014. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2013 and fall 20... California. Department of Water Resources.
2014 and 2015. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between fall 2014 and fall 20... California. Department of Water Resources.
2013 and 2014. California. Department of Water Resources. This point shapefile represents changes in groundwater levels in California. These data represent groundwater changes between spring 2013 and sprin... California. Department of Water Resources.