PREDICTION OF FLASH FLOOD SUSCEPTIBILITY USING FUZZY ANALYTICAL HIERARCHY PROCESS (FAHP) ALGORITHMS AND GIS: A STUDY CASE OF GUELMIM REGION IN SOUTHWESTERN OF MOROCCO

In recent decades, many of the countries around the world as well as the south-western Morocco (Guelmim region, Assaka watershed), was subject to flood-storm causing huge human and material damages. The current study focuses on the Prediction of flash flood susceptibility using Fuzzy Analytical Hier...

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Published inInternational archives of the photogrammetry, remote sensing and spatial information sciences. Vol. XLII-4/W19; pp. 407 - 414
Main Authors Talha, S., Maanan, M., Atika, H., Rhinane, H.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Gottingen Copernicus GmbH 23.12.2019
Copernicus Publications
Subjects
Algorithms
Altitude
Analytic hierarchy process
Drainage
Drainage density
Flash flooding
Flash floods
Flood management
Flood mapping
Flood predictions
Flooding
Floods
Fuzzy systems
Geographic information systems
Geographical information systems
Hierarchies
Information systems
Moisture index
Outlets
Rain
Rainfall
Remote sensing
River basins
Soil
Soil conditions
Soil moisture
Soil types
Soils
Storm damage
Storms
Vulnerability
Wadis
Watersheds
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Summary:In recent decades, many of the countries around the world as well as the south-western Morocco (Guelmim region, Assaka watershed), was subject to flood-storm causing huge human and material damages. The current study focuses on the Prediction of flash flood susceptibility using Fuzzy Analytical Hierarchy Process (FAHP) algorithms and Geographic Information System (GIS) technical. Flash floods areas were identified based on seven flash flood conditioning factors (Soil Moisture Index (SMI), Drainage Density, Rainfall, LULC, Altitude, Slope and Soil). Using AHP the weight derived for the factors were SMI 37% Rainfall 24.30%, Drainage Density 15.57%, LULC 9.98% Altitude 6.39% Slope of the river basin 4.06% and Soil type 2.70%. Then, applying a fuzzy inference system to create flash flood vulnerability maps. The resulting maps were classified into three categories: low, moderate and high flash flood susceptibility; indicated that the areas at the outlet of the watershed and which are close of the main affluent wadis (Seyyad and Oum Al-Achar) were very susceptible to flooding. This study will be helping these zones to be prioritized for the conservation and managing of flash floods.
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ISSN:2194-9034
1682-1750
2194-9034
DOI:10.5194/isprs-archives-XLII-4-W19-407-2019