|
|
Evaluation of a Water Reservoir Bed Morphology Using Bathymetric Data
Jílek, David ; Menšík, Pavel (referee) ; Marton, Daniel (advisor)
Sedimentation of reservoirs is one of the current problems in the field of water resource management. The actual conditions of the bed morphology can be scan by modern bathymetric sensors or measuring and then transferred to digital terrain models. This bachelor thesis evaluates the process of the sedimentation of the upper reservoir of Nové Mlýny reservoir since its first filling in 1978 to the newest measuring in 2018 using an assessment of a water volume changes in the reservoir. The thesis also describes a detailed manual of reservoir volumes evaluation in the programs ArcGIS and Atlas DMT, and verification of the method accuracy. These programs were used for creating the digital terrain models and calculating area-volume curves that were utilized for evaluation of a volume change and then for the amount of the reservoir sedimentation. The total volume of the reservoir loss during the forty years is estimated as 500 thousand m3 which equals 28 % of the total reservoir volume, at least the 300 thousand m3 of sedimentation was realised in the last ten years. The outcomes are part results of the project ATCZ28 SEDECO – Sediments, ecosystem services and interrelation with the floods and droughts in the AT-CZ border region.
|
|
|
Assessment of the Vranov Reservoir Storage Capacity in the Context of the Reservoir Bed Morphology Evolution and Hydrology Characteristic of the River Basin
Jílek, David ; Pavel,, Menšík (referee) ; Marton, Daniel (advisor)
The main function of the reservoir storage volumes is an accumulation of fresh water. Due to the reservoir sedimentation, the impact of climate change, and also unsuitable agricultural land management, a gradual capacity loss in the reservoir storage volumes is happening. The aim of the paper is to provide a storage capacity analysis of the Vranov reservoir. The analysis was made using the historical and updated input data, specifically morphological and hydrological data. The historical-morphological data were taken from the handling regulation guidelines. The upgraded morphological data were in the form of actual reservoir bathymetry measurement from 2021, from which the values of the volume and of the area for reservoir area-volume curves drawing were calculated. Bathymetric measurement was a part of an international project INTERREG AT-CZ "ATCZ28 SEDECO - Sediments, ecosystem services and interrelation with floods and droughts in the AT-CZ border region" as a cooperation between Povodí Moravy, s.p. and BUT FCE. The hydrologic data were provided by Czech Hydrometeorological Institute and have been updated till 2020. It includes an extreme drought event between 2015 and 2018 that significantly affected the results of the analysis. Based on the input data as well as reservoir storage simulation, an analysis of the reservoir storage capacity considering the water evaporation loss was created. The analysis has been made both for the deterministic and statistic solutions. In the statistic solution, a calculation of storage volume involving input data uncertainty was done. The partial results of the analysis were published in the paper Marton and Jílek: Posouzení zásobního objemu nádrže Vranov na aktualizovaná vstupní data. This paper was also a part of the presentation at the international conference Vodní nádrže 2022 in Brno organised by Povodí Moravy, s. p.
|
|
|
Evaluation of a Water Reservoir Bed Morphology Using Bathymetric Data
Jílek, David ; Menšík, Pavel (referee) ; Marton, Daniel (advisor)
Sedimentation of reservoirs is one of the current problems in the field of water resource management. The actual conditions of the bed morphology can be scan by modern bathymetric sensors or measuring and then transferred to digital terrain models. This bachelor thesis evaluates the process of the sedimentation of the upper reservoir of Nové Mlýny reservoir since its first filling in 1978 to the newest measuring in 2018 using an assessment of a water volume changes in the reservoir. The thesis also describes a detailed manual of reservoir volumes evaluation in the programs ArcGIS and Atlas DMT, and verification of the method accuracy. These programs were used for creating the digital terrain models and calculating area-volume curves that were utilized for evaluation of a volume change and then for the amount of the reservoir sedimentation. The total volume of the reservoir loss during the forty years is estimated as 500 thousand m3 which equals 28 % of the total reservoir volume, at least the 300 thousand m3 of sedimentation was realised in the last ten years. The outcomes are part results of the project ATCZ28 SEDECO – Sediments, ecosystem services and interrelation with the floods and droughts in the AT-CZ border region.
|
|
| |
guest ::
RSS feed.