The study was carried out on the flat part of the Dniester River section downstream from the city of Halych at a distance of 11 km.
The proposed study considers the technological scheme of hydrological modelling of the flooded land zone and the main components of this scheme: DEM construction, changes in the roughness of the channel and the riverbed area by Manning's coefficients, the impact of the planned channel displacement on Manning's coefficients, and indications of water level rise.
The paper uses our own research based on medium-resolution satellite imagery and topographic maps of various scales of 1:100000 over a 100-year period. The main objectives of the study are to develop a technological scheme for hydrological modelling of flooded lands based on remote sensing data, topographic maps using the HEC-RAS module and determine the main components of this scheme; to determine the magnitude of planned channel displacements over a long period in order to determine the stability of the channel and changes in the bedding surface of the riverbed area; to develop a methodology for determining the refined Manning's coefficients as a fundamental element of hydrological modelling based on the obtained changes in the riverbed areas; to carry out hydrological modelling.
The novelty of the study is the use of a test object for assessing the accuracy of hydrological modelling, which was a high-resolution satellite image at the time of the flood in June 2020, which allowed us to determine the influence of the main parameters on the modelling accuracy.
Burshtynska, K. & Kokhan S. & Pfeifer N. & Halochkin M. & Zayats I. (2023). Hydrological Modeling for Determining Flooded Land from Unmanned Aerial Vehicle Images—Case Study at the Dniester River. Remote Sensing. 15. DOI 10.3390/rs15041071.
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