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Geosciences 2018, 8(2), 50; https://doi.org/10.3390/geosciences8020050

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

1
Decentralized Administration of Macedonia-Thrace, Water Directorate, 55134 Thessaloniki, Greece
2
Laboratory of Engineering Geology and Hydrogeology, School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3
European Commission, Joint Research Centre (JRC), Directorate for Energy, Transport and Climate, Energy Efficiency and Renewables Unit, Via E. Fermi 2749, 21027 Ispra, Italy
4
Division of Hydraulics and Environmental Engineering, Department of Civil Engineering, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
Received: 13 October 2017 / Revised: 31 January 2018 / Accepted: 31 January 2018 / Published: 3 February 2018
(This article belongs to the Special Issue Integrated Risk Analysis and Management of Floods)
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Abstract

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. View Full-Text
Keywords: GIS analysis; flood risk management; rating methods; flood-prone areas; flood hazards; analytical hierarchy process GIS analysis; flood risk management; rating methods; flood-prone areas; flood hazards; analytical hierarchy process
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Patrikaki, O.; Kazakis, N.; Kougias, I.; Patsialis, T.; Theodossiou, N.; Voudouris, K. Assessing Flood Hazard at River Basin Scale with an Index-Based Approach: The Case of Mouriki, Greece. Geosciences 2018, 8, 50.

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