The reservoirs capacity assessment: the Tuyamuyun hydro complex in Khorezm region of Uzbekistan

Abstract The dynamic processes in water reservoirs depend on its morphological characteristics, i.e. bottom geology and relief, flow depth, intensity of water exchange, water and sediment features etc. The paper presents a capacity assessment of the Channel Reservoir of the Tyuyamuyun Hydro Complex located in Khorezm region of the Republic of Uzbekistan based on GIS tools. The study was aimed at determining of sedimentation dynamics of the Channel Reservoir during over 35 years dam operation and changes in the water storage capacity. The ongoing channel processes lead to regular reformation of the reservoir morphology. The data obtained allow determining the morphology of the reservoir, useful water volume, the capacity loss etc. and solving other issues related to management of water resources. The GIS technologies allows regular monitoring of the changes in capacity, make a prediction of future sedimentation processes, as well identify the stagnant water areas and volumes to be released to downstream for using in agriculture.

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