Assessing Flood Hazard at River Basin Scale with an Index-Based Approach: The Case of Mouriki, Greece

Geosciences

Olga Patrikaki¹  Nicolaos Theodossiou²  Thomas Patsialis²  Ioannis Kougias³  Nerantzis Kazakis⁴  Konstantinos Voudouris⁴ 

[1] Decentralized Administration of Macedonia-Thrace, Water Directorate, 55134 Thessaloniki, Greece;Division of Hydraulics and Environmental Engineering, Department of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;European Commission, Joint Research Centre (JRC), Directorate for Energy, Transport and Climate, Energy Efficiency and Renewables Unit, Via E. Fermi 2749, 21027 Ispra, Italy;Laboratory of Engineering Geology and Hydrogeology, School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;

关键词: GIS analysis;    flood risk management;    rating methods;    flood-prone areas;    flood hazards;    analytical hierarchy process;   

DOI  :  10.3390/geosciences8020050

来源: DOAJ

【 摘 要 】

Defining flood-prone areas is particularly important for policy makers, in order to design mitigation strategies and implement flood risk management planning. The present research applies a multicriteria index method to assess flood hazard areas at a river basin scale, in a geographic information system (GIS) environment. The developed methodology has been applied for an area in northeastern Greece, by processing information of seven parameters: flow accumulation, distance from the drainage network, elevation, land use, rainfall intensity and geology. The method assigns a relative importance to each of the parameters for the occurrence and magnitude of flooding, and the relevant weight values are defined through an “analytical hierarchy process”. Subsequently, and according to the relative importance of each index, the spatial information is superimposed, resulting in a flood hazard map of the studied region, an area in northern Greece. The obtained results indicate flood-prone zones, with a very high flood hazard mainly occurring at the lowlands in the vicinity of the drainage network. The provided flood hazard map supports planning activities and mitigation plans that are crucial to protect both the agricultural activities and existing infrastructure from future flood events.

【 授权许可】

Unknown