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Renovation of a water reservoir in the village of Žďárná
Pastorková, Nikola ; Krčma, Marek (referee) ; Duchan, David (advisor)
The theme of this diploma thesis is to restore the existing small reservoir in the village Žďárná. A new safety spillway and bottom outlet will be built, the flood will be shaped according to the cross-sections and the dam of the water reservoir will be fortified. The designed objects will be hydraulically verified. Using the HEC-HMS program, a hydrological model of the river basin is created and subsequently a derived flood wave PV20.
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The influence of forest on the occurrence of N-year flows in the basin
Doleželová, Hana ; Zemanová, Šárka (referee) ; Kozel, Tomáš (advisor)
The thesis deals with the influence of forest on n-year flows in the catchment near Staré Město pod Landštejnem. The aim of the thesis was to perform a schematization of the selected catchment and to determine the necessary parameters for the selected method, with the help of which the simulation of the rainfall-runoff process was carried out. The simulations were carried out on selected episodes during which the forest characteristics changed due to deforestation. Furthermore, simulations were performed in which the forest vegetation was changed to fields and meadows. Variants where RAIN-6H was used were also simulated. The model was built in the HEC-HMS program, in which the SCS Curve Number, SCS Unit Hydrograph and Muskingum methods were selected for the calculation. In the conclusion of the thesis, the model building and the course of the simulated episodes are summarized. Furthermore, the water retention capacity of the area of interest is evaluated.
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Assessment of torrential flood susceptibility for chosen profile
Doleželová, Hana ; BBA, Šárka Zemanová, (referee) ; Kozel, Tomáš (advisor)
The bachelor thesis deals with the course of flash floods in the Oslava and Oskava river basins. The aim of the bachelor thesis was to create a rainfall-runoff model, calibrate it on selected episodes and then evaluate it on validation episodes. Another goal was also to determine the probable behaviour during flash flood occurrence in the area. The model was created in the HEC-HMS program, in which the SCS Curve Number, SCS Unit Hydrograph and Lag methods were selected for the calculation. In the conclusion of the bachelor thesis, the developed model and the course of the simulated episodes are summarized. The suitability of the selected computational methods is also evaluated.
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Studie odtokových poměrů v povodí bezejmenného levostranného přítoku Svratky řkm 93,8 v k. ú. Ujčov
Mach, Arnošt
The diploma thesis is focused on the assessment of runoff conditions in the selected location for a purpose in form of the proposal complex system of measures. First of all was created literary research on topics like hydrology, forest roads, and measures for water retention. Next were in detail described the natural conditions of the chosen location. Thanks to the field survey were possible to identify critical locations for increased water drainage and determine risk factors. Based on the information gathered evaluated runoff conditions in the studied area and created a rainfall-runoff model in open-source software HEC-HMS. Lastly were designed measures for enabling the safe flow of water and measures for an increase in overall ecological stability.
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Influence of spatial snow distribution on flood course
Kučerová, Dana ; Jeníček, Michal (advisor) ; Langhammer, Jakub (referee)
For the purpose of hydrological forecasting on mountains' and sub-mountains' rivers is important knowledge of distribution of snow water equivalent in the watershed. Submitted thesis therefore deals with comparison of 9 interpolation methods in terms of quality of their forecasting when predicting snow depth and snow water equivalent in watershed Bystřice (127,6 km2 ), which is situated in the northwest of Bohemia in the Ore mountains. Point data of snow depth and snow water equivalent used in interpolation were sampled during an off- road measuring in 17. 2. 2010 at the 14 snow sampling locations. The interpolation methods were: (1) Thiessen's polygons, (2) inverse distance weighting, (3) global polynomial (4) local polynomial (5) radial basis functions, (6) ordinary kriging, (7) cokriging, (8) residual kriging and (9) orographic interpolation. Independent variable-altitude used in the calculation of snow depth and snow water equivalent was used only in the last three listed methods. Predictive ability of interpolation methods was evaluated by using cross-validation and visual comparison of predicted maps. The best prediction ability was provided by residual kriging and orographic interpolation. The geostatistical methods were next in the order. The method of Thiessen's polygons and inverse distance...
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Rainfall Runoff Model of the Kotojedka River Basin
Černá, Daniela ; Starý, Miloš (referee) ; Marton, Daniel (advisor)
The bachelor’s thesis deals with the modeling of the rainfall-runoff process in the Kotojedka river basin. Since there is no continuous hydrological measurements in the catchment, the main task was to develop a hydrological model using the HEC HMS software and then validate it using the additional calculation of the design flood hydrograph according to A. Čerkašin method. Moreover, a N-year return period flood hydrographs were derived, which can be used as a basis for flood protection measures planning in the river basin area and in the adjacent cadastral area of the Kroměříž city. The creation and simulation of the hydrological model were carried out for several model settings, respectively different methods for the calculation of hydrologic and hydraulic transformation of the water flow in the river network were tested and subsequently compared with each other.
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Simulace vlivu potenciálně vybudované vodní nádrže na odtok vody z vybraného povodí
HOŘEJŠÍ, Štěpán
This thesis consists of a literature review and a practical part focused on water retention - one of the crucial functions of water reservoirs. The aim of the thesis is to use the hydrological model HEC-HMS to simulate the impact of the water reservoir on the water runoff from the catchment area in the selected watershed and demonstrate how water reservoirs are able to affect the hydrograph during rainfall runoff events. In the included literature review, water reservoirs and their classifications are defined. Subsequently, precipitation and runoff, as well as the rainfall-runoff events, are explained. At the end of the literature review, various hydrological models are presented, with a closer description of the HEC-HMS hydrological model. The practical part consists of a description of the catchment area and the constructed water reservoir. This is followed by an analysis of the used method, including the necessary calculations for hydrological modelling. Finally, obtained results are presented and evaluated.
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Assessment of torrential flood susceptibility for chosen profile
Doleželová, Hana ; BBA, Šárka Zemanová, (referee) ; Kozel, Tomáš (advisor)
The bachelor thesis deals with the course of flash floods in the Oslava and Oskava river basins. The aim of the bachelor thesis was to create a rainfall-runoff model, calibrate it on selected episodes and then evaluate it on validation episodes. Another goal was also to determine the probable behaviour during flash flood occurrence in the area. The model was created in the HEC-HMS program, in which the SCS Curve Number, SCS Unit Hydrograph and Lag methods were selected for the calculation. In the conclusion of the bachelor thesis, the developed model and the course of the simulated episodes are summarized. The suitability of the selected computational methods is also evaluated.
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Modelling snow accumulation and melting in the Bystřice River basin
Kutláková, Lucie ; Jeníček, Michal (advisor) ; Daňhelka, Jan (referee)
Dealing with the issue of spring flood events is primarily based on their causes. It is therefore important to study the processes of snow accumulation and snowmelt especially in mountain areas where the development of snow water equivalent (SWE) is primarily observed. The snow water equivalent indicates amount of the water in the snow and thus represents a runoff volume during the spring melting period and demonstrates the flood risk potential. In this thesis the lumped modelling approach of the rainfall-runoff model HEC- HMS was used. The model was applied in the Bystřice River basin in the Ore Mountains where the field measurements of the snow cover and SWE is carried out. Applied temperature-index method is the well-developed method because it takes into account both the melting during precipitation and melting in the period without any precipitation and aims to capture snow energy balance by means of air temperature. Three winter periods (2006, 2008 and 2009) were simulated. The evolution of the snow water equivalent was observed and the agreement between observed and simulated hydrographs was assessed in the closure profile Ostrov. Published results show the influence of winter course and character on the model capability to simulate the snow water equivalent and runoff. The observed and...
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