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AUTOMATED ASSESSMENT OF PROFILES FOR BUILDING SMALL WATER RESERVOIRS
Abstract
Small water reservoirs are considered to be an important part of landscape retention capacity. Historically, such reservoirs occupied much more space in the area of present Czech Republic. According to droughts in recent years, the increase of a number of small water reservoirs is considered to be desirable. The identification of profiles suitable for building new small water reservoirs is one of key points in this field as the amount of financial resources is limited. Usually, the identification is done manually using topographic maps. Unfortunately, this approach is time consuming and does not provide quantified comparison of many profiles with respect to their suitability for this purpose. As an index which allows the comparison of many profiles the volume coefficient can be used which is included also in the Czech National Standard ?SN 75 2410 Small water reservoirs. This coefficient is based on two input values which are the volume of a dam and the storage volume of the reservoir. The calculation of the coefficient is usually done manually based on technical design in case of feasibility study of one single reservoir. However, the automated calculation is desirable when doing the analysis of larger area with the aim to find the most suitable profile for building a reservoir. The analysis can be efficiently speeded up by using GIS data and tools. In this paper, the tool developed at Czech technical university is presented. This tool is based on the analysis of detail elevation data with high resolution which are necessary with respect to the usual size of small water reservoirs. It was built with respect to its simple applicability as the application by wide spectra of engineers is considered. The tool is demonstrated on the catchment of Rusava which is located in eastern part of the Czech Republic.
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References8
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