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1. EPA RCRIS Sites, AZ, CA, NV, 1998
1983. United States. Environmental Protection Agency. Whenever appropriate, portions of this metadata were directly taken from the metadata of the original data set. RCRIS (Hazardous Waste - Violations... U.S. Environmental Protection Agency.
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. Major Dams, USA, 2013
2013. United States. Geological Survey. This dataset is provided as part of the USGS National Hydrology Dataset and depicts the point locations for major dams in all fifty states and Puer... United States Geological Survey.
5. Quadrangle Boundaries, Arizona, 2002
2002. Arizona. State Land Department. Index Grids, This statewide data set consists of polygons representing the 1:250,000 USGS Quad boundaries spanning Arizona. The Lat/Long grid has a... Arizona State Land Department.
6. Township, Range, and Section Grid, Arizona, 1988
1988. Arizona. State Land Department. This statewide coverage consists of the Township, Range, and Section grid lines for Arizona. American Indian Reservations are included, but without... Arizona State Land Department.