Abstract
The 15–18 May 2010 flood events on the watershed of the Bükkösd Stream, SW Hungary, are described, their general topographic and hydrologic characteristics are analyzed using the HEC-HMS numeric runoff model, and geomorphological impacts are surveyed. In addition to extreme rainfall volumes, the major reasons found to contribute to extreme impoundment were the fluctuating and locally reduced width of the valley, the confluence of tributaries, which create intermittent bottlenecks for drainage, and high soil moisture contents, which also caused slope instability in deeper soil mantle. Flash flood hazard is closely associated with landslide hazard in upland valleys.
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Acknowledgement
The project was financed within the framework of the Integrated Approach to Flood Risk Management (INARMA) program for Central Europe (European Union Regional Development Fund). The research was also supported by the grant of Developing Competitiveness of Universities in the South Transdanubian Region (SROP-4.2.1.B-10/2/KONV-2010-0002).
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Czigány, S., Pirkhoffer, E., Lóczy, D., Balatonyi, L. (2013). Flash Flood Analysis for Southwest-Hungary. In: Loczy, D. (eds) Geomorphological impacts of extreme weather. Springer Geography. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6301-2_5
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DOI: https://doi.org/10.1007/978-94-007-6301-2_5
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