The paper deals with results of continuing research activities of the Department of Hydraulic Engineering, Faculty of Civil Engineering, STU in Bratislava in the field of revitalisation of water bodies (old river branches) in the Medzibodrožie region which belongs to the southern part of the East Slovak Lowland. This problem was solved in the past in frame of INTERREG IIIA Initiative between the Hungary and Slovak Republic. The problem remained, just new aspects for solving the water supply were analysed in the presented paper. The first aspect is to supply old river branches due to gravity using outlet structures on pumping stations Boľ and Pavlovo on the Bodrog and Latorica Rivers. This solution is closely connected with high surface water levels in rivers, especially during floods. The second possibility – to our opinion more appropriate – is the revitalisation of river branch system by realisation of the rubber weir on the Latorica River and flooding of existing drainage channel system through outlet structures in the left-hand protection dyke of the Latorica River. The fundamental difference between mentioned methods of revitalisation of water bodies is that the second possibility can be utilized almost all over the year not depending on the flow rate in the Latorica River. Numerical modelling analysis of such a solution has quantified the amount of water supply into the river branch system, its water level regime at different discharges in the Latorica River during the year with respect to interaction with groundwater flow in the surrounding region. The analysis was connected with detailed hydrological, morphological and hydropedological survey.

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