Terrestrial Radioactivity and Gamma-ray Exposure in the United States and Canada (gridded K, Th, U)

Name: Terrestrial Radioactivity and Gamma-ray Exposure in the United States and Canada (gridded K, Th, U)
Creator: U.S. Geological Survey, Mineral Resources Program
License: https://creativecommons.org/publicdomain/mark/1.0/

U.S. Geological Survey, Mineral Resources Program

License: Public domain
Commercial: Yes
Format: GeoTIFF, Several
Coverage: United States and Canada

Last updated: Added to findgis 31 Oct 2026 · Update frequency Static

Source and attribution

Publisher

U.S. Geological Survey, Mineral Resources Program

License

Public domain

Commercial use: Yes
Attribution required: No
Modification allowed: See publisher
Redistribution allowed: See publisher
Share-alike: No

U.S. Government work (17 U.S.C. 105); public domain. USGS-authored information is in the public domain (https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits); no commercial-use restriction. Credit to USGS requested.License text

Region

North AmericaUS, CA

Type

Raster

Download

NArad_K_geog83.tif (GeoTIFF, 42.7 MB)NArad_Th_geog83.tif (GeoTIFF, 43.6 MB)NArad_U_geog83.tif (GeoTIFF, 42.8 MB)NArad_exp_geog83.tif (GeoTIFF, 43.0 MB)NArad_CCM_geog83.tif (GeoTIFF, 41.4 MB)

Service

WMShttps://mrdata.usgs.gov/services/aerorad

Extent

-16825-5371.33West, south, east, north. Data extent.

View on CartaTerra

Related datasets

HazardsNatural Occurrences of Asbestos in the United StatesVectorUnited States About 900 natural occurrences of asbestos minerals and fibrous amphiboles across the United States.
Geology and soilsNational Mineral Resource Assessment 1998 (undiscovered gold, silver, copper, lead and zinc deposits)VectorUnited States Permissive tracts and estimated numbers of undiscovered gold, silver, copper, lead and zinc deposits in the United States.
Geology and soilsAirborne Geophysical Surveys Inventory (USGS, North America)VectorNorth America Where airborne magnetic, electromagnetic and gamma-ray surveys have been flown across North America, with links to each survey's results.
HazardsFEMA National Flood Hazard LayerVectorUnited StatesFloodFEMA flood-hazard areas covering the United States, issued by county and by state.
HazardsFEMA National Risk IndexVectorUnited StatesRisk scores for 18 natural hazards by community.
HazardsCDC/ATSDR Social Vulnerability IndexVectorUnited StatesRankings of how vulnerable communities are to disasters.