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| Titel |
Application of a distributed hydrological model to the design of a road inundation warning system for flash flood prone areas |
| VerfasserIn |
P.-A. Versini, E. Gaume, H. Andrieu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 10, no. 4 ; Nr. 10, no. 4 (2010-04-15), S.805-817 |
| Datensatznummer |
250008084
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| Publikation (Nr.) |
 copernicus.org/nhess-10-805-2010.pdf |
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| Zusammenfassung |
This paper presents an initial prototype of a distributed hydrological model
used to map possible road inundations in a region frequently exposed to
severe flash floods: the Gard region (South of France).
The prototype has been tested in a pseudo real-time mode on five recent
flash flood events for which actual road inundations have been inventoried.
The results are promising: close to 100% probability of detection of
actual inundations, inundations detected before they were reported by the
road management field teams with a false alarm ratios not exceeding 30%.
This specific case study differs from the standard applications of
rainfall-runoff models to produce flood forecasts, focussed on a single or a
limited number of gauged river cross sections. It illustrates that, despite
their lack of accuracy, hydro-meteorological forecasts based on
rainfall-runoff models, especially distributed models, contain valuable
information for flood event management.
The possible consequences of landslides, debris flows and local erosion
processes, sometimes associated with flash floods, were not considered at
this stage of development of the prototype. They are limited in the Gard
region but should be taken into account in future developments of the
approach to implement it efficiently in other areas more exposed to these
phenomena such as the Alpine area. |
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