[ Courbe des débits classés un outil pour caractériser la sévérité et la saisonnalité d’étiage: Cas du bassin versant de la Tassaout Amont du Barrage Moulay Youssef (1978-2016), Maroc ]
Volume 68, Issue 2, September 2023, Pages 264–271
Mohamed Chakir1 and Mohamed El Ghachi2
1 Laboratoire Dynamique des Paysages, Risques et Patrimoines, Faculté des Lettres et des Sciences Humaines, Université Sultan Moulay Slimane, Béni Mellal, Morocco
2 Laboratoire Dynamique des Paysages, Risques et Patrimoines, Faculté des Lettres et des Sciences Humaines, Université Sultan Moulay Slimane, Béni Mellal, Morocco
Original language: French
Copyright © 2023 ISSR Journals. 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.
The Tassaout watershed (upstream Moulay Youssef dam) belongs to a semi-arid climatic context, characterized by limited precipitation. In addition to the scarcity and uneven distribution of water resources, under the shadow of current climate change, the region is subject to increasing demand for water resources. Low water is a seasonal event that can recur every year. Annual variations in precipitation can impact the severity of low water. This article attempts to contribute to the study of the severity and seasonality of low water levels based on the water deficit recorded during these periods. For this, we used the SPA (Sequent Peak Algorithm) method based on the amount of water deficit. The threshold for the appearance of low water was determined from the Q75 indicator extracted from the classified flow curve based on the daily flow data measured at the two stations; of Ait Tamlil and Tamsemat, which covers the period from 1978 to 2016.
Author Keywords: tassaout watershed, low water, classified flow curve, threshold, severity, water deficit.
Volume 68, Issue 2, September 2023, Pages 264–271
Mohamed Chakir1 and Mohamed El Ghachi2
1 Laboratoire Dynamique des Paysages, Risques et Patrimoines, Faculté des Lettres et des Sciences Humaines, Université Sultan Moulay Slimane, Béni Mellal, Morocco
2 Laboratoire Dynamique des Paysages, Risques et Patrimoines, Faculté des Lettres et des Sciences Humaines, Université Sultan Moulay Slimane, Béni Mellal, Morocco
Original language: French
Copyright © 2023 ISSR Journals. 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.
Abstract
The Tassaout watershed (upstream Moulay Youssef dam) belongs to a semi-arid climatic context, characterized by limited precipitation. In addition to the scarcity and uneven distribution of water resources, under the shadow of current climate change, the region is subject to increasing demand for water resources. Low water is a seasonal event that can recur every year. Annual variations in precipitation can impact the severity of low water. This article attempts to contribute to the study of the severity and seasonality of low water levels based on the water deficit recorded during these periods. For this, we used the SPA (Sequent Peak Algorithm) method based on the amount of water deficit. The threshold for the appearance of low water was determined from the Q75 indicator extracted from the classified flow curve based on the daily flow data measured at the two stations; of Ait Tamlil and Tamsemat, which covers the period from 1978 to 2016.
Author Keywords: tassaout watershed, low water, classified flow curve, threshold, severity, water deficit.
Abstract: (french)
Le bassin versant de la Tassaout (en amont barrage Moulay Youssef) appartenant à un contexte climatique semi-aride, caractérisé par des précipitations limitées. En plus de la rareté et de la répartition inégale des ressources en eau, sous l’ombre des changements climatiques actuels, la région est soumise à une demande croissante en ressources en eau. L’étiage est un événement saisonnier qui peut se reproduire chaque année. Les variations annuelles des précipitations peuvent impacter sur la sévérité de l’étiage. Cet article tente de contribuer à l’étude de la sévérité et de la saisonnalité des étiages à partir du déficit hydrique enregistré durant ces périodes. Pour cela, nous avons utilisé la méthode SPA (Sequent Peak Algorithm) basée sur la quantité de déficit hydrique. Le seuil d’apparition d’étiage a été déterminé à partir de l’indicateur Q75 extrait de la courbe des débits classés basées sur les données de débit journalier mesurées au niveau des deux stations; d’Ait Tamlil et Tamsemat, qui couvre la période de 1978 à 2016.
Author Keywords: bassin versant de tassaout, étiage, courbe des débits classés, seuil, sévérité, déficit hydrique.
How to Cite this Article
Mohamed Chakir and Mohamed El Ghachi, “Classified flow curve, a tool to characterize the severity and seasonality of low water levels: Case of the Tassaout watershed upstream of the Moulay Youssef Dam (1978-2016), Morocco,” International Journal of Innovation and Scientific Research, vol. 68, no. 2, pp. 264–271, September 2023.
