EN
In this study, natural radioactivity concentration in the surface soils along the Yeşilırmak river in Amasya have been investigated. The activity concentrations of radionuclides of the ²²⁶Ra and ²³²Th decay chains and of the ⁴⁰K were determined by means of gamma-ray spectrometry measurements made using a 3 × 3'' NaI(Tl) detector system. Concerning radiological risk, the absorbed gamma dose in air from those soils and the outdoor annual effective dose equivalent were calculated.