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Start Over Publisher National Atlas of the United States Bounding Box -40.000931 39.999015 -39.999064 40.000987

32. Magnetic Field - Total Field Intensity for the Epoch 2010.0

Datasets Stanford University Public content
2010. National Geophysical Data Center. This shapefile contains isodynamic lines (lines of equal total intensity of the Earth's magnetic field), derived from the International Geomagnetic... National Atlas of the United States.

34. National Fire Plan - Hazardous Fuels Reduction Program, 2004

Datasets Stanford University Public content
2004. National Atlas of the United States. This polygon shapefile portrays county level data for the fiscal-year-2004 National Fire Plan - Hazardous Fuels Reduction Program. The purpose of t... National Atlas of the United States.

35. National Wilderness Preservation System of the United States, 2006

Datasets Stanford University Public content
1972. National Atlas of the United States. This polygon shapefile contains National Wilderness Preservation System areas of 640 acres or more, in the United States, Puerto Rico, and the U.S.... National Atlas of the United States.

36. Omernik's Level III Ecoregions of the Continental United States, 2003

Datasets Stanford University Public content
2003. United States. Environmental Protection Agency. This polygon shapefile shows Omernik's Level III ecoregions, derived from a 1:7,500,000 map created by J.M. Omernik in 1987 and from refinements of... National Atlas of the United States.

37. Seismic Hazard Map for the United States

Datasets Stanford University Public content
2012. Rukstales, Kenneth S. (compiler). This polygon shapefile represents seismic hazards in the United States. The data represent a model showing the probability that ground motion will ... National Atlas of the United States.

38. Significant United States Earthquakes, 1568-2009

Datasets Stanford University Public content
2005. Geological Survey (U.S.). This point shapefile contains the locations and attributes of significant, historic earthquakes that caused deaths, property damage, and geological... National Atlas of the United States.

39. Spread of Africanized Honey Bees in the United States, 1990-2005

Datasets Stanford University Public content
2006. United States. Agricultural Research Service. This polygon shapefile portrays the spread, by year, of the Africanized honey bee (AHB) in the United States, Puerto Rico, and the U.S. Virgin Isla... National Atlas of the United States.

40. Time Zones of the United States, 2005

Datasets Stanford University Public content
2005. National Atlas of the United States. This polygon shapefile portrays the time zones of the United States, Puerto Rico, and the U.S. Virgin Islands. Also included are the Greenwich Mean... National Atlas of the United States.