Data Catalog

• Federal

  Total Terrestrial Gamma Activity Polygons for an Aerial Radiological Survey of Abandoned Uranium Mines, Navajo Nation, 1994-1999, USEPA and USDOE

  U.S. Environmental Protection Agency —

  This polygon shapefile presents ranges of ground surface exposure rate from total terrestrial gamma activity, and calculated from aerial gross count data (all gamma...

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• Federal

  Excess Bismuth 214 Contours for an Aerial Radiological Survey of Abandoned Uranium Mines, Navajo Nation, 1994-1999, USEPA and USDOE

  U.S. Environmental Protection Agency —

  This line shapefile provides iso-contours of excess Bismuth 214 in counts per second based upon the 1764keV photopeak. Excess Bismuth 214 is based upon measured minus...

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  • HTML
• Federal

  Total Terrestrial Gamma Activity Countours for an Aerial Radiological Survey of Abandoned Uranium Mines, Navajo Nation, 1994-1999, USEPA and USDOE

  U.S. Environmental Protection Agency —

  This line shapefile documents ground surface exposure rate from total terrestrial gamma activity, and calculated from aerial gross count data (all gamma events in the...

  • Esri REST
  • HTML
• Federal

  Fish Locations for Mercury Contamination Concentrations, Lahontan, 2013, NDOW and EPA

  U.S. Environmental Protection Agency —

  This is a summary of mercury (Hg) data from fish collected in the Lahontan Reservoir area of the Carson River Basin. NDOW collected the fish and the EPA Region 9...
• Federal

  Soil and Sediment Mercury Samples, Lahontan, 1993, USBR

  U.S. Environmental Protection Agency —

  This is a summary of mercury (Hg) data from the Lahontan Reservoir area of the Carson River Basin. USBR provided an information overview and reference source on...
• Federal

  Surface Water Hg and MeHg Samples, Below Lahontan, 1997-2013, USGS

  U.S. Environmental Protection Agency —

  The Carson River is a vital water resource for local municipalities and migratory birds travelling the Pacific Flyway. Historic mining practices that used mercury...
• Federal

  Abandoned Uranium Mine (AUM) Surface Areas, Navajo Nation, 2016, U.S. EPA Region 9

  U.S. Environmental Protection Agency —

  This GIS dataset contains polygon features that represent all Abandoned Uranium Mines (AUMs) on or within one mile of the Navajo Nation. Attributes include mine...

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  • Esri REST
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• Federal

  Water Quality Samples, Lahontan Spillway, 1996-2006, USBR

  U.S. Environmental Protection Agency —

  This is a summary of mercury (Hg) data from the Lahontan spillway area of the Carson River Basin. USBR provided an information overview and reference source on...
• Federal

  Piscivorous Birds Mercury Samples, Lahontan, 1997-2006, USGS

  U.S. Environmental Protection Agency —

  The dynamic nature of the annual volume of water discharged down the Carson River over a 10-year period, which included a century flood and drought, was examined in...
• Federal

  Excess Bismuth 214 Polygons for an Aerial Radiological Survey of Abandoned Uranium Mines, Navajo Nation, 1994-1999, USEPA and USDOE

  U.S. Environmental Protection Agency —

  This polygon shapefile presents ranges of ground surface exposure rate from excess Bismuth 214 in counts per second based upon the 1764keV photopeak. Excess Bismuth...

  • Esri REST
  • HTML
• Federal

  Fish Tissue Samples, CRMS, 2012, EPA, USFWS, and USGS

  U.S. Environmental Protection Agency —

  EPA has collected soil, sediment, surface water and biota data to complete the remedial investigation (RI) at the Operable Unit (OU) No. 2 of the Carson River Mercury...
• Federal

  Operable Unit 2 Boundary, CRMS, 2017, EPA

  U.S. Environmental Protection Agency —

  EPA has compiled a significant volume of soil, sediment, surface water and biota geodata, collected either directly, by our contractors and in many cases by our...
• Federal

  Wetland Contaminant Samples, Stillwater NWR, 1996, USFWS and USGS

  U.S. Environmental Protection Agency —

  Investigations of wetlands in Lahontan Valley have documented concentrations of inorganic contaminants in water, sediment, and biological samples in excess of...
• Federal

  Surface Water Hg and MeHg Samples, Above Lahontan, 1997-2013, USGS

  U.S. Environmental Protection Agency —

  The Carson River is a vital water resource for local municipalities and migratory birds travelling the Pacific Flyway. Historic mining practices that used mercury...
• Federal

  XRF Incremental Sampling Method Study, Six Mile Canyon, 2019, EPA

  U.S. Environmental Protection Agency —

  The current conceptual site model (CSM) includes data gaps related to the extent of mercury contamination throughout the site, as well as the presence of other metal...

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