Analysis of change of retention capacity of a small water reservoir

1st International Conference on Advances in Environmental Engineering

生态环境科学

Výleta, R.^1 ; Danáová, M.^1 ; Valent, P.^1

Department of Land and Water Resources Management, Faculty of Civil Engineering, Slovak University of Technology, Radlinského 11, Bratislava

810 05, Slovakia^1

关键词: Acoustic doppler current profiler;    Agricultural land;    Digital elevation model;    Erosion and sedimentation;    Its efficiencies;    Retention capacity;    Return periods;    Soil particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/92/1/012075/pdf
DOI  :  10.1088/1755-1315/92/1/012075

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

This study is focused on the analysis of the changes of retention capacity of a small water reservoir induced by intensive erosion and sedimentation processes. The water reservoir is situated near the village of Vrbovce in the Western part of Slovakia, and the analysis is carried out for a period 2008-2017. The data used to build a digital elevation model (DEM) of the reservoir's bed came from a terrain measurement, utilizing an acoustic Doppler current profiler (ADCP) to measure the water depth in the reservoir. The DEM was used to quantify the soil loss from agricultural land situated within the basin of the reservoir. The ability of the water reservoir to transform a design flood with a return period of 100 years is evaluated for both design (2008) and current conditions (2017). The results show that the small water reservoir is a subject to siltation, with sediments comprised of fine soil particles transported from nearby agricultural land. The ability of the water reservoir to transform a 100-year flood has not changed significantly. The reduction of the reservoir's retention capacity should be systematically and regularly monitored in order to adjust its operational manual and improve its efficiency.