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1. Active Management and Irrigated Nonexpansion Areas, Arizona, 2002
2002. Arizona. Department of Water Resources. The dataset depicts both active management areas (AMAs) and Irrigated Nonexpansion Areas (INAs) in Arizona. Arizona Department of Water Resources.
2. American Indian Reservations, Arizona, 1870
1870. University of Arizona. Library. Statewide coverage of 1870 American Indian Reservations. Reservation boundaries cross into the adjacent states. For example, the Navajo Nation cros... University of Arizona.
3. American Indian Reservations, Arizona, 1880
1880. University of Arizona. Library. Statewide coverage of 1880 American Indian Reservations. Reservation boundaries cross into the adjacent states. For example, the Navajo Nation cros... University of Arizona.
4. American Indian Reservations, Arizona, 1890
1890. University of Arizona. Library. Statewide coverage of 1890 American Indian Reservations. Reservation boundaries cross into the adjacent states. For example, the Navajo Nation cros... University of Arizona.
5. American Indian Reservations, Arizona, 1900
1900. University of Arizona. Library. Statewide coverage of 1900 American Indian Reservations. Reservation boundaries cross into the adjacent states. For example, the Navajo Nation cros... University of Arizona.
6. American Indian Reservations, Arizona, 1910
1910. University of Arizona. Library. Statewide coverage of 1910 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
7. American Indian Reservations, Arizona, 1920
1920. University of Arizona. Library. Statewide coverage of 1920 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
8. American Indian Reservations, Arizona, 1930
1930. University of Arizona. Library. Statewide coverage of 1930 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
9. American Indian Reservations, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
10. American Indian Reservations, Arizona, 1950
1950. University of Arizona. Library. Statewide coverage of 1950 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the A... University of Arizona.
11. American Indian Reservations, Arizona, 1960
1960. University of Arizona. Library. Statewide coverage of 1960 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the U... University of Arizona.
12. American Indian Reservations, Arizona, 1970
1970. University of Arizona. Library. Statewide coverage of 1970 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data is from the U... University of Arizona.
13. American Indian Reservations, Arizona, 1980
1980. University of Arizona. Library. Statewide coverage of 1980 American Indian Reservations. Boundaries that cross into the adjacent states are included. Population data from U.S. Bur... University of Arizona.
14. Annual Mean Daily Average Temperature, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
15. Annual Mean Daily Maximum Temperature, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
16. Annual Mean Daily Minimum Temperature, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
17. Annual Mean Daily Temperature Range, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
18. Annual Mean Dew Point Temperature, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's Surface Airways Hourly (TD-3280) database (NOAA, 2000a). The original... National Climatic Data Center (U.S.).
19. Annual Mean Length of Freeze-Free Period, Arizona, 1961-1990
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.).
20. Annual Mean Maximum Daily Snowfall, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 1999c). The... National Climatic Data Center (U.S.).
21. Annual Mean Number of Days with Measurable Precip., Arizona, 1961-1990
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.).
22. Annual Mean Number of Days with Temp 90 Deg F, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set 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.).
23. Annual Mean Number of Days with Temp. less than 32 Deg F, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set 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.).
24. Annual Mean Relative Humidity, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's Surface Airways Hourly (TD-3280) database (NOAA, 2000a). The original... National Climatic Data Center (U.S.).
25. Annual Mean Total Heating Degree Days, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
26. Annual Mean Total Precipitation, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
27. Annual Mean Total Snowfall, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). The data set was computed using data from the National Climatic Data Center's United States Snow Climatology (TD-9641M) database (NCDC, 1999c). The... National Climatic Data Center (U.S.).
28. Annual Median Length of Freeze-Free Period, Arizona, 1961-1990
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.).
29. Areas of High Potential for Large Scale Solar Facilities, Arizona, 2014
2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.
30. Areas of High Potential for Small Scale Solar Facilities, Arizona, 2014
2014. University of Arizona. Cooperative Extension. The REOA model approach used to generate this dataset incorporates two main objectives (physical and economic) and a range of sub-objectives to det... University of Arizona. Cooperative Extension.
31. Areas of Land Subsidence, Arizona, 2014
2014. Arizona. Department of Water Resources. The Arizona Department of Water Resources Geophysics/Surveying Unit has been collecting and processing Interferometric Synthetic Aperature Radar (I... Arizona Department of Water Resources.
32. Arson Rates by County, Arizona, 1990-2001
1990. Arizona. Department of Public Safety. Research and Planning. Depiction of arson by county from 1990-1999 & 2001. Rates are per 100,000 persons. Rates are calculated using the population estimate for the year ... Arizona Department of Public Safety Research and Planning & Arizona Criminal Justice Commission Statictical Analysis Center.
33. Average Age of Death by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of the average age of death by county in Arizona in 2000. Arizona Deptartment of Health Services.
34. AZGS Earth Fissures, Arizona, 2015
2015. Arizona Geological Survey. This line shapefile displays the surface trace of earth fissures mapped by the AZGS, as well as reported, unconfirmed earth fissures within study a... Arizona Geological Survey.
35. AZGS Earth Fissures Study Area, Arizona, 2015
2015. Arizona Geological Survey. This polygon shapefile displays the extents of the earth fissures study areas. A blank area on the map does not guarantee earth fissures are not pr... Arizona Geological Survey.
36. Biotic Communities, Arizona, 1993
1993. Arizona. State Land Department. This dataset adapted from the map provided "Biotic Communities of the Southwest", August 1980 by David E. Brown and Charles H. Lowe. The datasest s... Arizona State Land Department.
37. Buddhist Temples (BGIS Version 1.1), China, 2006
2006. Jiang Wu, University of Arizona. This is a georeferenced dataset of contemporary Chinese Buddhist sites based on a Chinese directory published in 2006. The source data is based on ... Jiang Wu, University of Arizona.
38. Causes of Death by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of the number of births and deaths and death rates by selected causes by county of occurrence. Causes of death include cardiovascular, lu... Arizona Deptartment of Health Services.
39. Census Places, Arizona, 1870
1870. University of Arizona. Library. Statewide coverage of 1870 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Statistics of ... University of Arizona.
40. Census Places, Arizona, 1880
1880. University of Arizona. Library. Statewide coverage of 1880 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Statistics of ... University of Arizona.
41. Census Places, Arizona, 1890
1890. University of Arizona. Library. Statewide coverage of 1890 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Report on Popu... University of Arizona.
42. Census Places, Arizona, 1900
1900. University of Arizona. Library. Statewide coverage of 1900 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Twelfth Census... University of Arizona.
43. Census Places, Arizona, 1910
1910. University of Arizona. Library. Statewide coverage of 1910 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Thirteenth Cen... University of Arizona.
44. Census Places, Arizona, 1920
1920. University of Arizona. Library. Statewide coverage of 1920 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Fourteenth Cen... University of Arizona.
45. Census Places, Arizona, 1930
1930. University of Arizona. Library. Statewide coverage of 1930 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Fifteenth Cens... University of Arizona.
46. Census Places, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Sixteenth Cens... University of Arizona.
47. Census Places, Arizona, 1960
1960. University of Arizona. Library. Statewide coverage of 1960 Places based on population data available from the U.S. Bureau of the Census. Population data is from the Eighteenth Dec... University of Arizona.
48. Census Places, Arizona, 1970
1970. University of Arizona. Library. Statewide coverage of 1970 Places based on population data available from the U.S. Bureau of the Census. Population data is from the 1970 Census of... University of Arizona.
49. Central Arizona Project Aqueduct, Arizona, 2002
2002. Central Arizona Project (U.S.). A polyline depicting the approximate location of the Central Arizona Project Aqueduct from start at the diversion point on the Colorado river throu... Central Arizona Project (U.S.).
50. Chlamydia Rates by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of the incidence rate of Chlamydia in Arizona in 2000 by county. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
51. County Subdivisions, Arizona, 1930
1930. University of Arizona. Library. Statewide coverage of 1930 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
52. County Subdivisions, Arizona, 1940
1940. University of Arizona. Library. Statewide coverage of 1940 Census County Subdivisions (Minor Civil Divisions). University of Arizona.
53. County Subdivisions, Arizona, 1950
1950. University of Arizona. Library. Statewide coverage of 1950 Census County Subdivisions. University of Arizona.
54. County Subdivisions, Arizona, 1960
1960. University of Arizona. Library. Statewide coverage of 1960 Census County Subdivisions. University of Arizona.
55. County Subdivisions, Arizona, 1970
1970. University of Arizona. Library. Statewide coverage of 1970 Census County Subdivisions. University of Arizona.
56. Date of Extreme Latest Snowfall, Arizona, 1961-1990
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.).
57. Environmental Observations along the Agua Fria River, Arizona, 2008
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.
58. Environmental Observations along the Agua Fria River, Arizona, 2009
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.
59. Environmental Observations along the Agua Fria River, Arizona, 2010
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.
60. Environmental Observations along the Agua Fria River, Arizona, 2011
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.
61. 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.
62. EPA Superfund Sites, Arizona, 1997
1983. United States. Environmental Protection Agency. Dataset depicts EPA Superfund sites throughout Arizona. This dataset was created from the CERLIS database. CERCLIS is a national computerized manag... U.S. Environmental Protection Agency.
63. Ephemeral and Perennial Streams, Arizona, 1993
1993. Arizona. State Land Department. Dataset identifies both Ephemeral and Perennial Streams throughout Arizona. This dataset was converted in the fall of 1988 from USGS 1:100,000 scal... Arizona State Land Department, Arizona Land Resources Information System.
64. Extreme First 32 Degree Fahrenheit Temperature in Autumn, Arizona, 1961-1990
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.).
65. Extreme Last 32 Degree Fahrenheit Temperature in Spring, Arizona, 1961-1990
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.).
66. Field work travel routes taken during vegetation mapping in Sonoran Proghorn Habitat, Cabeza Prieta NWR, 2004
2004. Jim Malusa, USGS. This dataset offers supplementary info to the vegetation associations identified in CabezaPrietaNWR_Vegetation_2004.shp. The dataset depicts the ro... United States Geological Survey.
67. Firearm Deaths by County, Arizona, 2000
1990. Arizona. Department of Health Services. Depiction of Firearm related deaths by county in Arizona. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
68. General Soil Groups, Arizona, 1975
1975. Arizona. State Land Department. This statewide coverage consists of several major soils and some minor soils groups. Digitized at 1:1,000,000 scale, 'General Soil Map - 1975', by ... Arizona State Land Department.
69. Geologic Fault Formations, Arizona, 2000
2000. Arizona. State Land Department. This data set consists of geologic fault formations throughout the State of Arizona. Arizona State Land Department.
70. Geologic Formations, Arizona, 2000
2000. Arizona. State Land Department. This data set consists of general geologic formations throughout the State of Arizona. Arizona State Land Department.
71. Gonorrhea Rates by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of incidence rate of Gonorrhea by county in Arizona. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
72. Grandfathered Groundwater Rights (GFRs), Arizona, 1981
1981. Arizona. Department of Water Resources. An Irrigation Non-expansion Area (INA) is a geographical area that has been designated as having insufficient groundwater to provide a reasonably s... Arizona. Department of Water Resources.
73. Groundwater Basins and Subbasins, Arizona, 2015
2015. Arizona. Department of Water Resources. The data provide base information for use in GIS systems to aid in assessment for a variety of planning and analysis purposes and to provide a geog... Arizona Department of Water Resources.
74. Groundwater Savings Facility Permit Areas, Arizona, 2015
2015. Arizona. Department of Water Resources. A Groundwater Savings Facility (GSF) Permit (A.R.S. Section 45-812.01 ) allows the permit holder to deliver a renewable water supply, called "in-li... Arizona Department of Water Resources.
75. Hepatitis A Incidence Rates by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of disease incidence rate for Hepatitis A by county in Arizona. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
76. Hepatitis B Incidence Rates by County, Arizona, 2000
2000. Arizona. Department of Health Services. Depiction of disease incidence rate for Hepatitis B by county in Arizona. Incidence rate is per 100,000 persons. Arizona Department of Health Services.
77. Incidence of Aggravated Assault by County, Arizona, 1990-2001
1990. Arizona. Department of Public Safety. Research and Planning. Depiction of aggravated assaults by county from 1990-2001. Rates are per 100,000 persons. Rates are calculated using the population estimate for th... Arizona Department of Public Safety Research and Planning & Arizona Criminal Justice Commission Statictical Analysis Center.
78. Interstate Highways, Arizona, 1988
1988. Arizona. State Land Department. This data set consists of all interstate highways in Arizona. Converted in the fall of 1988 from the DLG to ARC format. This dataset was created by... Arizona State Land Department, Arizona Land Resources Information System.
79. Irrigation Districts, Arizona, 2014
2014. Arizona. Department of Water Resources. Irrigation districts are municipal corporations with broad powers and purposes. Districts can purchase or acquire water rights, own or sell propert... Arizona Department of Water Resources.
80. Irrigation Grandfathered Rights in AMAs, Arizona, 1979
1975. Arizona. Department of Water Resources. An Irrigation Grandfathered Right (IGFR) is a right to irrigate land in an active management area that was legally irrigated any time between 1975 ... Arizona Department of Water Resources.
81. Known Mineral Deposit Areas, Arizona, 1993
1993. Arizona. State Land Department. This coverage shows known mineral deposit areas (KMDA's) in Arizona for locatable minerals. Locatable minerals include all that may be obtained by ... Arizona State Land Department.
82. Lakes, Arizona, 1974
1974. Arizona. State Land Department. Hydro polygon features in the State of Arizona with an emphasis on lakes, ponds and reservoirs. This polygon cover consists of all the lakes and bo... Arizona State Land Department.
83. Land Ownership, Arizona, 1988
1988. Arizona. State Land Department. Depicts geographic boundaries of various land ownership. Ownership holders include Bureau of Land Management, State Trust Land, Private Land, Natio... Arizona State Land Department.
84. Larceny and Theft Rates by County, Arizona, 1990-2001
1990. Arizona. Department of Public Safety. Research and Planning. Depiction of larceny and theft by county in Arizona for 1990-1999 & 2001. Rates are per 100,000 persons. Rates are calculated using the population ... Arizona Department of Public Safety Research and Planning & Arizona Criminal Justice Commission Statictical Analysis Center.
85. 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).
86. 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).
87. Major and Minor River Systems, Arizona, 1993
1993. Arizona. State Land Department. Data layer depicts all rivers and streams. Converted in the fall of 1988 from USGS 1:100,000 scale DLG data to ARC format. Since then, multiple and... Arizona State Land Department.
88. 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.
89. Major Lakes, Arizona, 1993
1993. Arizona. State Land Department. Depiction of major lakes in Arizona. Arizona State Land Department.
90. Major Rivers and Primary Tributaries, Arizona, 1993
1993. Arizona. State Land Department. Data layer depicts major rivers, main stem and primary reach tributaries. Converted in the fall of 1988 from USGS 1:100,000 scale DLG data to ARC f... Arizona State Land Department, Arizona Land Resources Information System.
91. Major Rivers, Arizona, 1993
1993. Arizona. State Land Department. Data layer depicts major rivers with main stem. Converted in the fall of 1988 from USGS 1:100,000 scale DLG data to ARC format. Since then, multipl... Arizona State Land Department, Arizona Land Resources Information System.
92. Mean First 32 Degree Fahrenheit Temperature in Autumn, Arizona, 1961-1990
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.).
93. Mean Last 32 Degree Fahrenheit Temperature in Spring, Arizona, 1961-1990
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.).
94. Mean Number of Days with Measurable Snowfall > 0.1 inch, Arizona, 1961-1990
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.).
95. Mean Number of Days with Measurable Snowfall > 1.0 inch, Arizona, 1961-1990
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.).
96. Mean Number of Days with Measurable Snowfall > 10.0 inch, Arizona, 1961-1990
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.).
97. Mean Number of Days with Measurable Snowfall > 5.0 inches, Arizona, 1961-1990
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.).
98. Mean Relative Humidity - Annual, Arizona, 1961-1990
1961. National Climatic Data Center (U.S.). This element was computed using data from the National Climatic Data Center's U.S. National 1961-1990 Climate Normals (NOAA, 1994b). The original d... National Climatic Data Center (U.S.).
99. Median Date of First Snowfall, Arizona, 1961-1990
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.).
100. Median Date of Last Snowfall, Arizona, 1961-1990
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.).