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1. Adjudicated Groundwater Basins, California, 2013

2013. California. Department of Water Resources. This polygon shapefile contains the boundaries of adjudicated groundwater basins in California. These data were developed using the best available ... California. Department of Water Resources.

2. Level III Ecoregions, Arizona, 2013

2013. US Environmental Protection Agency. Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to... U.S. EPA Office of Research & Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL).

3. Level IV Ecoregions, Arizona, 2013

2013. US Environmental Protection Agency. Ecoregions by state were extracted from the seamless national shapefile. Ecoregions denote areas of general similarity in ecosystems and in the typ... U.S. EPA Office of Research and Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL).

4. United States Census Urbanized Areas, 2010

2013. U.S. Census Bureau. Geography Division and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the 2010 Census urban areas in the United States. An urban area comprises a densely settled core of census tracts... Environmental Systems Research Institute (Redlands, Calif.).

5. U.S. Census Urban Areas, 2013

2013. U.S. Department of Commerce, Census Bureau, Geography Division and Esri. U.S. Census Urban Areas represents the 2010 Census urban areas in the United States. An urban area comprises a densely settled core of census tract... Esri.

6. World Administrative Divisions (Disputed Boundaries), 2013

2013. DeLorme Publishing Company and Environmental Systems Research Institute (Redlands, Calif.). This line shapefile represents the disputed boundaries of the world. This layer is part of the 2014 ESRI Data and Maps collection for ArcGIS 10.2.W... Environmental Systems Research Institute (Redlands, Calif.).

7. World Urban Areas, 2013

2013. DeLorme Publishing Company and Environmental Systems Research Institute (Redlands, Calif.). This polygon shapefile represents the urban areas of the world with populations of more than 10,000. This layer is part of the 2014 ESRI Data and M... Environmental Systems Research Institute (Redlands, Calif.).