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).
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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).
1993. Arizona. State Land Department. Depiction of major lakes in Arizona. Arizona State Land Department.
2017. Geographic depiction of the potential distribution of mammal species in a depicted area. Species richness estimates are based on individual species... United States Environmental Protection Agency.
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Cooperative Summary of the Day (TD-3200) database (NCDC, 1995). The o... National Climatic Data Center (U.S.).
1961. National Climatic Data Center (U.S.). This element was computed using snowfall data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 19... National Climatic Data Center (U.S.).
1961. National Climatic Data Center (U.S.). This element was computed using snowfall data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 19... National Climatic Data Center (U.S.).
1961. National Climatic Data Center (U.S.). This element was computed using snowfall data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 19... National Climatic Data Center (U.S.).
1961. National Climatic Data Center (U.S.). This element was computed using snowfall data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 19... National Climatic Data Center (U.S.).