Risk Scenarios For Flash-Floods In The Rural Area Generated By Combined Hazard, Technologic And Natural

Ionel Haidu (1) , Augustin Ionuţ Crăciun (2) , Radu Alexandru Marian (3)

1 CERGAPE - LOTERR - Centre d'Etude et de Recherche en Géographie de l'Aménagement des Paysages et de l'Environnement
2 Hydrological Station SGA Cluj
3 S.C. VITAL S.A.

Certain rural settlements situated in the floodplain area are exposed to a high risk of flash-floods, in case a sudden damage appeared in the supply water system network. The purpose of the present research is the anticipation of hydrological risk in this type of areas in case of a simultaneous occurrence of two types of hazard: torrential rain and damages to the supply water system network. Therefore we will use an ArcGIS procedure of building flash-floods scenarios generated by extreme events, namely the high level of soil saturation, damages to the supply water system network and a high intensity torrential rain. The article presents different scenarios according to the return period (T) of the torrential rain: T= 20 years, T=100 years and T=1000 years. The results will highlight the several vulnerability categories of the terrain and households related to combined risk. The flash-floods scenarios in the rural settlements that benefit from a supply water system network will be of great use to the local administrative authorities for the management of combined risk emergencies.

Mots clés: flood; scenario; return period; rural; water supply network; hazard; susceptibility; vulnerability; hydrological risk

Domaines: Géographie

Ionel Haidu, Augustin Ionuţ Crăciun, Radu Alexandru Marian. Risk Scenarios For Flash-Floods In The Rural Area Generated By Combined Hazard, Technologic And Natural. Carpathian Journal of Earth and Environmental Sciences, 2019, 14 (1), pp.181-190. ⟨10.26471/cjees/2019/014/070⟩. ⟨hal-02488129⟩