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Siltation of the Újezd water reservoir
 Kebertová, Daniela ; Šobr, Miroslav (advisor) ; Chalupová, Dagmar (referee)
This bachelor thesis focuses on the siltation of water bodies. In April 2020 the first accurate and detailed bathymetric survey of the Újezd water reservoir was conducted using an ADCP RiverSurveyor M9. The aim of the measurement was to determine volume of the reservoir after 39 years since its construction. The obtained data was processed in ArcMap 10.7.1 using the kriging method of interpolation. Based on it a new bathymetric map of current state of the reservoir was created. For the sake of understanding the causes of siltation, a complex physical-geographic characteristics of the upper stream basin of Bílina river, on which the Újezd water reservoir is situated, had been done. The river basin is fundamentally anthropogenically influenced by water supply system and mining activities. The volume of the reservoir at a water surface area of 117.20 ha was shown to be 4718364 m3 , 1.63% larger, compared to the values 4642640 m3 and 120.75 ha presented in the management manual for the waterwork. The volumes are comparable which indicates that there is no significant amount of siltation and the reservoir became a naturally functional and sustainable ecosystem.
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