Estimating sedimentation rates in small reservoirs - Suitable approaches for local municipalities in central Europe

Journal of Environmental Management
David HonekMichaela Danáčová

Abstract

Small reservoirs, as the preferred blue-green engineering infrastructure for use against intensive runoff processes, have risen in number in Central Europe during the past three decades. However, the modelling of sediment siltation is not included in reservoir planning. The unknown temporal sedimentation of a reservoir can lead to the lifespan of the construction being uncertain. The aim of this study is to present a relatively simple process for local managers to model siltation and, consequently, accurately estimate the lifetime of a small reservoir. Three empirical models (USLE, RUSLE and USPED) were applied to two small catchments in Central Europe. This paper takes advantage of real measured and modelled sedimentation during 2012 and 2017, presenting two different terrain measurement approaches. Our study emphasizes the importance of the R-factor value. The temporal development of the R-factor is dependent on climate change, and the R-factor value has been rising steadily during the last decades. The annual mean R-factor has increased 1.04-times due to changes in precipitation patterns between the periods 1961-1980 and 1997-2016. These changes can explain possible growth in the levels of incoming sediment into reservoirs. ...Continue Reading

References

Aug 24, 2007·Journal of Environmental Management·Bheshem Ramlal, Serwan M J Baban
Mar 26, 2013·Journal of Environmental Management·Bau-Shian Lee, Gene Jiing-Yun You
Jan 27, 2015·The Science of the Total Environment·Panos PanagosChristine Alewell
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May 29, 2018·The Science of the Total Environment·Guangju ZhaoJiacong Huang

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