Abstract

Heavy and intense precipitation which fell in just a few hours across the western, north-western and northern Slovenia on 18 September 2007, caused quick rise of river discharges especially in the region of Baška grapa, Davča, the Cerkljansko and Škofja Loka hills. In that area the streams caused huge destruction on infrastructure, homes, business buildings and other property. More than 300 mm of rain was recorded on some precipitation measurement stations. The return period of the highest precipitation was more than 100 years. The amount of precipitation decreased from the west to the east of the country where above 100 mm of precipitation was recorded and torrential streams and rivers flooded in the region of Karavanke and foothills of the Kamnik-Savinja Alps, Kranj and Domžale fields, the Tuhinj valley and extensive Celje region. Observed discharges of streams and rivers on the most affected area exceeded periodical maximum discharges. The simulation of flood hydrograph for Železniki was done by HEC-1 model. The return period of floods was more than 100 years. Besides flooding many landslides were triggered. The result of this catastrophe was enormous economic damage and loss of six people's lives.

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