HYDROLOGICAL SURVEYS OF TYPICAL BASIN AREAS OF BUKTYRMA, ESIL, ZHAYIK RIVERS

This paper presents the results of field studies conducted in the Buktyrma, Esil and Zhayik river basins as part of a project to assess current and projected hydrological changes in Kazakhstan's river basins based on modelling (using the Buktyrma, Esil and Zhayik rivers as examples). One of the main results of the scientific research was the development of an algorithm and the acquisition of cross-sectional profiles and orthophoto plans in the studied basins, which will be used to develop and construct maps of river floodplain inundation areas for individual characteristic sections using hydraulic modelling. Digital terrain models obtained by aerial photography of the area using unmanned aerial vehicles will be used in the process of creating maps. To determine the flood zone, cross-sections were plotted along the length of the rivers and the characteristics of hydrological processes at the sites of their occurrence were obtained. The results of the work contribute significantly to the understanding of the dynamics of the studied rivers in Kazakhstan and provide the necessary tools for water resource management and minimisation of the consequences of hydrological phenomena.