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21. Groundwater Elevation Change Contours, California, Spring 2011 to Spring 2016

2011. California. Department of Water Resources. This line shapefile represents changes in groundwater levels in California. These data represent groundwater changes between spring 2011 and spring... California. Department of Water Resources.

22. Groundwater Elevation Color Ramp, California, Spring 2011

2011. California. Department of Water Resources. This raster dataset (GeoTIFF) represents groundwater elevation in California for spring 2011 using a color ramp. This layer is a smoothed approxima... California. Department of Water Resources.

23. Groundwater Elevation Contours, California, Spring 2011

2011. California. Department of Water Resources. This line shapefile represents groundwater elevation in California for spring 2011. This layer is a smoothed approximation of the groundwater level... California. Department of Water Resources.

24. Kelp Canopy: Southern California, 2011

2011. Naval Air Systems Command (NAVAIR), Ocean Imaging, Corp., and California Department of Fish and Wildlife. This polygon shapefile depicts the 2011 aerial kelp survey that was created from Digital Multi-Spectral Camera image files. The data was collected ... California. Department of Fish and Game. Marine Resources Region.

25. Lead (Pb): Federal Area Designations: California, 2011

2011. United States. Environmental Protection Agency. This polygon shapefile contains area designations of lead attainment (Pb) in California (Region 9). There are three categories of designations: : n... United States. Environmental Protection Agency. Region IX.

26. Particulate Matter (PM-10): Federal Area Designations: California, 2011

2011. United States. Environmental Protection Agency. Region IX. This polygon shapefile shows designated areas for particulate matter < 10 microns according to the 24-Hour National Ambient Air Quality Standard... California. Air Resources Board.

27. Particulate Matter (PM-2.5) Non-Attainment Areas: California, 2011

2011. United States. Environmental Protection Agency. . This polygon shapefile identifies areas in the U.S. where air pollution levels have not met the 2006 National Ambient Air Quality Standards (NAAQS)... California. Air Resources Board.

28. Shaded Surface Relief: California, 150-Meter Resolution

2011. Bay Area Open Space Council. This raster dataset depicts a 150 meter resolution shaded surface relief of California. This hillshade was generated by GreenInfo Network and was c... Bay Area Open Space Council.

29. Traffic Bottlenecks, California, 2011

2011. California. Department of Transportation. This line shapefile represents traffic bottlenecks, or heavy congestion during peak a.m. and p.m. travel periods, on California's State Highway sys... California. Department of Transportation.

30. Truck Networks, California, 2011

2011. California. Department of Transportation. This line shapefile represents the truck network in California as of 2011. This layer shows sanctioned routes for commercial truck traffic located ... California. Department of Transportation.