Journal of Radioanalytical and Nuclear Chemistry

, Volume 303, Issue 3, pp 2539–2545 | Cite as

Efficiency testing of Red Lake protection dam on Rosu stream by 210Pb method



The Red lake, a small lake from Romania is threatened by massive sedimentation, therefore two protection dams were constructed on Oii and Rosu brooks. The aim of this study is to get information about the variation of the retention capability of the dams using the 210Pb method. 210Pb, 226Ra and 137Cs were measured by gamma- and 210Po by alpha spectrometry. The values for mass sedimentation are between 0.17 ± 0.03–2.3 ± 0.4 g/cm2y for the Red Lake and 0.21 ± 0.03–0.9 ± 0.1 g/cm2y for the dam lake. Due to these high values, the dam lake will fill up in 20 ± 8y and 80 % of the Red Lake in 81 ± 30y.


210Pb dating method Sedimentation rate Protection dams 


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  1. 1.Faculty of Environmental Science and Engineering“Babes-Bolyai” UniversityCluj-NapocaRomania

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