Prioritization of Flood Risk in Ganjvan Watershed of Ilam Province using ELECTRE Model

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Naderi Fathollah; Naseri Behroz; Khanmohamadian Yasem; Salamat Emad; Kosha MohamadTaqhi

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Journal Paper

Paper Information

Journal: GEOGRAPHY AND ENVIRONMENTAL HAZARDS Year:2022 | Volume:11 | Issue:3 Page(s): 1-21

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Information Journal Paper

Title

Prioritization of Flood Risk in Ganjvan Watershed of Ilam Province using ELECTRE Model

Author(s)

Keywords

Watershed Management

Entropy

ELECTRE

Flood

Ganjvan

Abstract

Environmental hazards and dealing with them are among the most important concerns of researchers in the field of environmental planning and crisis management. Among these hazards, Flood is one of the most dangerous natural disasters that should be given special attention in crisis management. Therefore, prioritizing sub-basins for Watershed Management operations considering Flood control seems necessary. The study tried to prioritize the Ganjvan watershed basins in Ilam province to implement Flood control management plans against Floods using the multi-criteria ELECTRE decision-making method. For this purpose, the studied watershed was divided into five sub-basins of Rizevand, Sarcham Deh Haroon, Sarpetak, Sartang Bijar and Ganjvan. The criteria for prioritization were lithology, slope, height, precipitation, land use and drainage density. The weights of the criteria were obtained based on their Entropy model and using the ELECTRE model of watershed sub-basins in the prioritization area. The prioritization map of these sub-basins was then prepared. Flood risk prioritization map in the studied area shows that Ganjvan sub-basin with the highest Flood potential has the first priority and Sartang Bijar sub-basin is the second priority to implement Flood control Watershed Management plans.

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