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Flooding risks in mountain areas

Objectif

To identify and analyse the parameters that determine the
governing meteorological, hydraulic, morphological and erosion
processes in mountain and hilly areas, and to develop a
methodology to translate any climatic changes into changed
flooding risks.


Flooding hazards in mountain areas are most often caused by a
combination of flash floods and strong variations in bed levels
due to large sediment inputs into the river. The current risk of
flooding in mountain areas will change due to significant
climatic changes influencing rainfall characteristics,
desertification, evaporation, vegetation cover, snow melt, river
hydrography and sediment yield of the river basin.

A number of strongly related research topics have been identified
to cover the complete subject:

Climate change scenarios for the
Mediterranean region will be identified using the results of
available climate models and a method of so-called downscaling.

These scenarios will render the boundary conditions for the water
and sediment supply into the river. The water supply (river
hydrograph) will be calculated using a combination of available
sophisticated and simpler rainfall-runoff models. This
combination will enable the simulation of the hydrologic
processes for long periods.

The sediment supply into the river
system due to erosion is highly variable. The research project
will include an accurate analysis of the sources of sediment,
improvement of the knowledge about the various erosion processes
and development of tools for mathematical modelling of the
processes involved.

The water and sediment supplies will be
translated into flooding risks using mathematical descriptions of
the water and sediment movement in mountain rivers. Both
analyses of the governing physical processes and mathematical
description will be executed in the project to make a soundly
based prediction of the water levels and bed levels to be
expected in mountain streams.

For the risk assessment of
flooding hazards, probabilistic design methods will be applied.
The flooding risks will be made visible by means of flooding risk
maps. The methodology developed in the project will be tested
using data of at least one European medium sized mountain
watershed.

Champ scientifique

Programme(s)

Thème(s)

Appel à propositions

Data not available

Régime de financement

CSC - Cost-sharing contracts

Coordinateur

Stichting Waterloopkundig Laboratorium
Contribution de l’UE
Aucune donnée
Adresse

8300 AD Emmeloord
Pays-Bas

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Coût total
Aucune donnée

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Dernière mise à jour: 14 Juillet 1997

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Permalink: https://cordis.europa.eu/project/id/EV5V0462/fr

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