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RadNet Searchable Database
The RadNet searchable database contains 23 years of environmental radiation monitoring data from all fifty states and U.S. territories and 40 years of measurements of strontium in milk. Approximately 200 stations nationwide sample the nation's air, precipitation, drinking water and milk. Surface water was also collected by the system since its inception in 1973 but it was discontinued in March 1999. In some cases, the air and precipitation stations are co-located. The database provides important environmental radiation information about nuclear fallout from weapons tests and reports significant releases of radioactivity into the environment, such as the Chinese weapons tests of 1976 and 1977, Three Mile Island in 1979, and the Chernobyl incident in 1986. The database allows users to perform statistical analyses on subsets of data graphically, displaying these analyses. The RadNet database is also linked to EPA's EnviroMapper, which allows users to display data by location.
How to access the RadNet Database: http://www.epa.gov/enviro/html/erams/