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Geosciences 2015, 5(2), 203-221; doi:10.3390/geosciences5020203

Flash Floods in the Guelmim Area/Southwest Morocco–Use of Remote Sensing and GIS-Tools for the Detection of Flooding-Prone Areas

1
Technische Universität Berlin (TUB), Institute of Applied Geosciences, Institute of Applied Geosciences; Ernst-Reuter-Platz 1, D-10587 Berlin, Germany
2
University of Cadi Ayyad, Polydisciplinary Faculty, Safi, 4162, Route de Sidi Bouzid, 46000 Safi, Morocco
*
Author to whom correspondence should be addressed.
Academic Editors: Ken McCaffrey and Jesus Martinez-Frias
Received: 11 January 2015 / Accepted: 12 May 2015 / Published: 27 May 2015
(This article belongs to the Special Issue Geological Mapping and Modeling of Earth Architectures)
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Abstract

The violent storms of 22–30 November 2014, resulted in flash floods and wadi floods (rivers) in large parts of Southern Morocco, at the foot of the Atlas Mountains. The Guelmim area was the most affected part with at least 32 fatalities and damages due to inundations. The flooding hazard in the Guelmim region initiated this study in order to investigate the use of remote sensing and geographic information system (GIS) for the detection and identification of areas most likely to be flooded in the future again due to their morphologic properties during similar weather conditions. By combining morphometric analysis and visual interpretation based on Landsat 8 satellite data and derived images such as water index (NDWI) images, areas with relatively higher soil moisture and recently deposited sediments were identified. The resulting maps of weighted overlay procedures, aggregating causal, morphometric factors influencing the susceptibility to flooding (lowest height levels, flattest areas), allowed for the distinguishing of areas with higher, medium and lower susceptibility to flooding. Thus, GIS and remote sensing tools contribut to the recognition and mapping of areas and infrastructure prone to flooding in the Guelmim area. View Full-Text
Keywords: flooding; southern Morocco; remote sensing; GIS flooding; southern Morocco; remote sensing; GIS
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Theilen-Willige, B.; Charif, A.; Ouahidi, A.E.; Chaibi, M.; Ougougdal, M.A.; AitMalek, H. Flash Floods in the Guelmim Area/Southwest Morocco–Use of Remote Sensing and GIS-Tools for the Detection of Flooding-Prone Areas. Geosciences 2015, 5, 203-221.

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