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Regional Radiation Information

The United States Environmental Protection Agency (EPA), in cooperation with the North Coast Unified Air Quality Management District (District), has been monitoring the levels of radiation in our area for several years. A local RadNet site based in Eureka provides near real-time monitoring of radiation levels in the region.

For current information please visit the following websites:

Historical 2011 Fukushima Incident Information and Resources:

  • U.S. EPA - Japanese Nuclear Emergency Radiation Monitoring 2011
  • USGS and the National Atmospheric Deposition Program (NADP) networks measured fission-product isotopes in the US from the Fukushima Daiichi nuclear power facility atmospheric release incidents in March 2011. The USGS website shows that following the disaster, radioactive iodine and cesium were detected in precipitation samples but at levels well below any level of public health concern.
  • Japan Tsunami Marine Debris - What to do if you see debris.
  • Tsunami Debris on California's North Coast - The March 11, 2011, tsunami produced five million tons of debris. Most of the debris stayed near Japan, but NOAA estimates 1.5 milllion tons were caught in the Pacific Ocean currents and pushed by winds towards North America. Tsunami debris may begin arriving on the North Coast later this year and continue over the next several years.

If you have additional questions or require further assistance, staff are available to assist you at (707) 443-3093 or