Slovenia has a very diverse relief. It has also unevenly distributed rainfall. The area of torrent Gereš is located in north-western Slovenia, which is quite hilly and may receive an annual rainfall up to 3000 mm. That is the reason for a lot of torrential areas causing many troubles in that part of country. In this thesis, I have focused on the critical section of the torrent, where water cross the embankments and endanger nearby residential buildings. On the basis of empirical equations I have estimated the runoff from the catchment area, which I have determined with the help of program SAGA-GIS.I have made a review of the channel and proposed a concept of flood-protection regulation.
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