A spatial and integrated flood risk diagnosis

Oumaima Bennani (Laboratory of Geosciences and Environment, Cadi Ayyad University, Marrakesh, Morocco) (UMR GRED (IRD, UPV), Montpellier, France)
Ernest Druon (UMR GRED and IRD, Paul Valéry University of Montpellier, Montpellier, France)
Frédéric Leone (UMR GRED and IRD, Paul Valéry University of Montpellier, Montpellier, France) (International Mix Laboratory MediTer, Cadi Ayyad University, Marrakesh, Morocco)
Yves Tramblay (HydroSciences Montpellier, CNRS, IRD, University of Montpellier, Montpellier, France)
Mohamed El Mehdi Saidi (Universite Cadi Ayyad, Marrakech, Morocco)

Disaster Prevention and Management

ISSN: 0965-3562

Publication date: 7 October 2019



The purpose of this paper is to identify vulnerable areas for flood hazard and to analyze stakes exposed in touristic valley of Morrocan mountains. The three goals are: methodological (low-cost diagnosis without starting data), operational (to show the risk and identify avenues of prevention in Ourika) and incentive (to reproduce this on other sectors in Morocco).


The vulnerability of three areas of the Ourika valley (the most frequented) was assessed by a hydro-geomorphological study, human frequentation surveys and risk indices at the building scale.


Surveys carried out in the field allowed the identification of areas with high risk, the evaluation of the buildings’ vulnerability and the frequentation of the valley. Evacuation plans, allowing easy access to potential refuges in case of flood, were finally proposed.


The reproducible, inexpensive and relevant nature of the approach (integrated and spatialized) helps in decision making and facilitating dialogue for prevention.



The research was done with the support of two joint research laboratories from the French Institut de Recherche pour le Développement: the LMI TREMA and LMI MediTer; and with the support of the Socially Responsible Projects of Cadi Ayyad University.


Bennani, O., Druon, E., Leone, F., Tramblay, Y. and Saidi, M. (2019), "A spatial and integrated flood risk diagnosis", Disaster Prevention and Management, Vol. 28 No. 5, pp. 548-564. https://doi.org/10.1108/DPM-12-2018-0379

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