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Retention Reservoir Design in the Police Cadastr
Hadaš, Zdeněk ; Menšík, Pavel (referee) ; Starý, Miloš (advisor)
This thesis deals with the river basin flood protection Loučka. The goal of the thesis is to assess the need of flood control measures supplement in the watershed. The first part deals with exploration of river basin, acquiring geographic factors and obtaining information about the topic, establishment and application of rainfall model used for solving the problem. The second part deals with improving of flood protection at critical selected places by using design of reservoir system with retention effect and by increasing river basin capacity. For basin schematisation was used ArcGIS program and the simulation of rainfall-runoff process was made by Hydrog program.
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Flood control measures in the Nectava River basin
Boháč, Ondřej ; Menšík, Pavel (referee) ; Starý, Miloš (advisor)
This bachelor’s thesis deals with the flood control in the basin Nectavy. The aim is to assess the need enhance flood control in the basin. The work is divided into two parts, the first part deals with own description of the basin and the second part with data processing in programs ArcGIS and Hydrog. The description of the basin consists of a personal acquaintance with the basin and its surroundings, interview with residents of communities located along the river and description of geographic factors in the basin. After obtaining all necessary informations will be basin schemed in the program ArcGIS where it will be divided into smaller sub-basins which will require for further work. The output from the previous step is used for processing in the program Hydrog, to work in this program is also needed to calculate the replacement intensity of rains. Simulation in the program Hydrog are obtained critical period of rains and set N-year flows. In the end the obtained values of peak flows are compared with the actual flows and identifying critical points are assessed for possible flow and flood.
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Flood control measures in the Loučka Catchment
Hadaš, Zdeněk ; Marton, Daniel (referee) ; Starý, Miloš (advisor)
This thesis deals with the river basin flood protection Loučka. The aim to assess the need tu supplement flood control measures in the watershed. The first half deals with exploration of river basin, providing geographic factors and obtaining information on the topic. The second part deals with the establishment and application of rainfall model to solve the problem. For schematisation basin was used ArcGIS program. Rainfall simulation process were calculated critical duration of rainfall intensity and spare set of N-year flows. It was by searching for critical points and assessed for possible overflow.
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Management of Brno Dam Water Reservoir
Kala, David ; Syrovátka, Oldřich (advisor) ; Duchek, Stanislav (referee)
Focus of this bachelor thesis is a long-term, sustainable management of environment of dam in Brno, more precisely environment of a basin of the river Svratka, with regards to creation of optimal balance between ecological, economic and social field. Need to solve this issue arose as a result of catastrophic quality of water in a water reservoir, which was caused by inappropriate agricultural activities in the basin and improper waste management especially in the area of municipal waste. In accordance with effort to start up process that would result in better management of environment in the basin of river Svratka, model project "Čisté povodí Svratky" is being realized. Its goal is to attain rectification by implementation of several essential measures. Project came to be as a joint effort of several regions (Pardubický, Vysočina and Jihomoravský as a coordinator of the project), statutory city of Brno, Povodí Moravy, state enterprise (as a guarantor of the project). On behalf of process of revitalization in the basin of river Svratka, or rather water reservoir Brněnská přehrada, several model situations and consequent measures to improve quality of water have been proposed, based on gathered data. Extent of the proposed measures should allow maintaining balance within all of the monitored spheres. My focus in practical ecological part of this thesis lays in observation of coefficient of ecological stability and complex estate modifications in chosen localities of area in question.
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The influence of extreme precipitation on washout of potassium and sodium ions from the Liz basin in the period of 2002-2009
Vondrka, A. ; Tesař, Miroslav ; Šír, M.
Extreme rains strongly influence the intensity of leaching of sodium and potassium from the soil cover. The question therefore arises whether it is possible to find some connection between extreme rains and sodium and potassium leaching. During the period of 2002-2009, measurement of rainfall, runoff, and chemical data on catchment Liz (Czech Republic, Bohemian Forest, 828–1074 m a. s. l., mature spruce forest, Podzolic Eutric Cambisol) gave the following conclusions about the washout of potassium and sodium ion from the basin: (1) In monthly periods, extreme loss of both potassium and sodium ions correlated with high precipitation amounts. (2) In annual periods, only extreme loss of sodium ions correlated with high precipitation amounts.
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The costs of water retention in landscape and wetland creation in Czech republic.
ČERNÝ, Jan
Different types of man-made retention systems (polder, small water reservoir, large water reservoir) have been characterized by means of their retention potential and cost of retention per one cubic meter. As part of these man-made retention systems, wetland area has been created. Its acreage and build expense has been counted up inreference to total area, which differed within various types of retention systems. The results of these calculations, Hessenian method, and the metohod of agricultural land use were used to evaluate natural river basin and its retention potential. The calculations reveal, that model locality of natural river basin has the lowest value, when used for agriculture cultivation. Hessenian method showed the highest value. The expense of substituting the natural retention of the model locality with different man-made retention systems is estimated to be 0.5?1.6 billion CZK.
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The occurrence of brook lamprey [Lampetra planeri (BLOCH, 1784)] in Novohradské Mountains (South Bohemia, Czech Republic)
Matěnová, V. ; Matěna, Josef
The occurrence of brook lamprey was studied in Novohradské Mountains during 1999-2003. Altogether 83 profiles on 22 second to fourth order brooks and streams were fished by means of electroshockers. The area investigated can be divided into three basins. Significant differences were found between basins with respect to frequency of occurrence and density of lamprey populations. The highest frequency of occurrence was in the Stropnice River basin (6 streams of 8 investigated, average abundance 2598 inds ha-1), followed by the Malše River (4 streams of 8 investigated, average abundance 844 inds ha-1). In the Černá Rivulet basin only in 1 of 6 streams investigated the brook lamprey was found at very low densities - 28 inds ha-1 on average. The lamprey contributed substantially to the whole forming more than 50
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