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71. Date of Extreme Earliest Snowfall, Arizona, 1961-1990

Datasets University Of Arizona Public content
1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, and 1990. This element was computed using snowfall data from the National Climatic Data Center's United States Climatology database. The extreme date is the ... National Oceanic and Atmospheric Administration.

72. Date of Extreme Latest Snowfall, Arizona, 1961-1990

Datasets University Of Arizona Public content
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.).

73. Earth Fissures, Arizona, 2003

Datasets University Of Arizona Public content
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.

79. EPA Dam Locations, Western United States, 1998

Datasets University Of Arizona Public content
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.

80. EPA Ecoregions for the Conterminous U.S., United States, 1998

Datasets University Of Arizona Public content
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.