Flood management and a GIS modelling method to assess flood-hazard areas—a case study

This paper presents a viable approach for flood management strategy in a river basin based on the European Floods Directive. A reliable flood management plan has two components: (a) a proper flood management strategy, and (b) the determination of the flood-hazard areas. A method to evaluate the bene...

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Bibliographic Details
Published in:Hydrological sciences journal 2011-03, Vol.56 (2), p.212-225
Main Authors: Kourgialas, Nektarios N, Karatzas, George P
Format: Article
Language:English
Subjects:
Case studies
Earth sciences
Earth, ocean, space
Exact sciences and technology
flood control
flood management
Floods
forecasting-warning system
geographic information systems
geology
gestion des inondations
GIS
hazardous areas
Hydrology. Hydrogeology
land use
rain intensity
risk
SIG
système de prévision et d'alerte
watersheds
zones d'aléa
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Summary:This paper presents a viable approach for flood management strategy in a river basin based on the European Floods Directive. A reliable flood management plan has two components: (a) a proper flood management strategy, and (b) the determination of the flood-hazard areas. A method to evaluate the benefits of a flood warning system is presented herein, as well as a method to estimate the flood-hazard areas. Six factors were considered in order to estimate the spatial distribution of the hazardous areas: flow accumulation, slope, land use, rainfall intensity, geology and elevation. The study area was divided into five regions characterized by different degrees of flood hazard ranging from very low to very high. The produced map of flood-hazard areas identifies the areas and settlements at high risk of flooding. The proposed methodology can be applied to any river basin and here was applied to the Koiliaris River basin in Greece.Citation Kourgialas, N. N. & Karatzas, G. P. (2011) Flood management and a GIS modelling method to assess flood-hazard areas—a case study. Hydrol. Sci. J.56(2), 212–225.
ISSN:2150-3435
0262-6667
2150-3435
DOI:10.1080/02626667.2011.555836