- This data was created based on the survey results at the shore from the "Monitoring Results of Aquatic Organisms" released to the public in the Ministry of the Environment website.
- In this monitoring, concentrations of radioactive cesium and radioactive strontium in water at public waters including rivers, lakes, water sources, and shores in Miyagi Prefecture and Fukushima Prefecture were measured.
- The data consisted of measurement results from January 2012 to December 2016.