Horizon / Plein textes La base de ressources documentaires de l'IRD

IRD

Publications des scientifiques de l'IRD

Zkhiri W., Tramblay Yves, Hanich L., Berjamy B. (2017). Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco. Natural Hazards, 86 (2), 953-967. ISSN 0921-030X

Accès réservé (Intranet IRD) Document en accès réservé (Intranet IRD)

Lien direct chez l'éditeur doi:10.1007/s11069-016-2723-0

Titre
Regional flood frequency analysis in the High Atlas mountainous catchments of Morocco
Année de publication2017
Type de documentArticle référencé dans le Web of Science WOS:000394328400022
AuteursZkhiri W., Tramblay Yves, Hanich L., Berjamy B.
SourceNatural Hazards, 2017, 86 (2), p. 953-967. ISSN 0921-030X
RésuméIn semi-arid catchments, the contribution of floods to annual runoff is important. The High Atlas Mountain catchments (N'Fis, Rheraya, Ourika, Zat and R'dat) located in the south of Morocco, upstream of the city of Marrakech, are an example of those basins where floods provide the main contribution to surface water resources. The goal of this study is to evaluate whether a regional flood frequency analysis could improve the estimation of the magnitude and the occurrence of floods in these mountainous catchments. The database considered is long-term measurement of daily discharge at the outlets with record length varying from 35 to 45 years. The index flood method is considered to build a regional model based on the generalized extreme values distribution. The results showed a contrasted seasonal behavior, with floods caused by either rainfall during the autumn season or a mix of rainfall and snowmelt for spring events. As a consequence, two distinct regional models have been computed, one for autumn and one for spring events. No significant trends have been found for seasonal maximum discharge in all the catchments. The results of the regional frequency analysis show that the regional model provides better flood quantiles estimates than a standard at-site model. However, there is a much greater uncertainty for both local and regional estimates of floods occurring during the autumn than during spring events, which are estimated with a good level of accuracy. This research provides insights into how to improve the estimation of flood return levels useful for water resources management in these semi-arid mountainous catchments.
Plan de classementHydrologie [062]
Descr. géo.MAROC ; HAUT ATLAS
LocalisationFonds IRD [F B010069301]
Identifiant IRDfdi:010069301
Lien permanenthttp://www.documentation.ird.fr/hor/fdi:010069301

Export des données

Disponibilité des documents

Télechargment fichier PDF téléchargeable

Lien sur le Web lien chez l'éditeur

Accès réservé en accès réservé

HAL en libre accès sur HAL


Accès aux documents originaux :

Accès direct

Bureau du chercheur

Site de la documentation

Espace intranet IST (accès réservé)

Suivi des publications IRD (accès réservé)

Mentions légales

Services Horizon

Poser une question

Consulter l'aide en ligne

Déposer une publication (accès réservé)

S'abonner au flux RSS

Voir les tableaux chronologiques et thématiques

Centres de documentation

Bondy

Montpellier (centre IRD)

Montpellier (MSE)

Nouméa

Papeete

Niamey

Ouagadougou

Tunis

La Paz

Quito