2003. This data represents the locations of earth fissures in central and southeastern Arizona. Earth fissures are pervasive cracks found on valley floor... Arizona Geological Survey.
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1994. These data sets consist of the School Districts in Arizona by county. Arizona State Land Department.
2008. Arizona NEMO. A shapefile of all the observations collected by volunteers in 2008 during the annual Wet/Dry mapping of the Agua Fria River. This file and other a... Arizona NEMO.
2009. Arizona NEMO. A shapefile of all the observations collected by volunteers in 2009 during the annual Wet/Dry mapping of the Agua Fria River. This file and other a... Arizona NEMO.
2010. Arizona NEMO. A shapefile of all the observations collected by volunteers in 2010 during the annual Wet/Dry mapping of the Agua Fria River. This dataset and othe... Arizona NEMO.
2011. Arizona NEMO. A shapefile of all the observations collected by volunteers in 2011 during the annual Wet/Dry mapping of the Agua Fria River. This file and other a... Arizona NEMO.
1998. This dataset provides a locational map of 2,471 dams in Arizona, California, Colorado, Idaho, Nevada, New Mexico, Oregon, and Utah. The National In... United States Environmental Protection Agency.
1998. The ECOREG coverage provides polygon coverage of the Level III ecoregions for the conterminous United States. The ecoregions shown here have been d... United States Environmental Protection Agency.
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.
1982. This data was prepared by the U.S. Environmental Protection Agency (EPA) in 1982 and include all hydrography shown on USGS maps having a scale of 1... United States Environmental Protection Agency.