[ Carte de synthèse de la qualité des eaux superficielles du bassin versant de l’Oued Inaouen (Maroc) ]
Volume 25, Issue 1, December 2018, Pages 322–328
Mohamed Ben Abbou1, Loubna Bougarne2, Mahmoud Zemzami3, and Mounia El Haji4
1 Laboratoire d'Ecologie Fonctionnelle et Environnement, Faculté des Sciences et Techniques, Fès 30000, Morocco
2 Laboratoire des Ressources Naturelles et Environnement, Faculté Polydisciplinaire de Taza, B.P. 1223 Taza Gare, Morocco
3 Laboratoire de Géoressources et Environnement, Faculté des Sciences et Techniques, Fès 30000, Maroc
4 Laboratoire des Ressources Naturelles et Environnement, Faculté Polydisciplinaire de Taza, B.P. 1223 Taza Gare, Morocco
Original language: French
Copyright © 2018 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 present work is the result of a study that was carried out over the period 2010-2012, the objective of which was to determine the state of quality and the development of the synthesis maps of the surface waters of the basin. the Oued Inaouen slope, based mainly on the study of the physicochemical and bacteriological parameters of the surface waters. The analyze were performed on 26 well-distributed sampling points at the Oued Inaouen watershed using standard methods. The results of the analyzes revealed a spatio-temporal differentiation along the Wadi Inaouen watershed, following the intervention of natural and anthropogenic factors. The right bank of the basin is characterized by significant mineralization. On the other hand, the left bank is characterized by fresh water, reflecting the effect of limestone and Liassic dolomites of the Middle Atlas on the chemical composition of the water. This state of pollution is more marked downstream, in the stations that receive more rejects. Added to this are the climatic conditions of the region, which are characterized by very low flows of wadis upstream to dry during the summer season. The origin of this pollution is related to household and industrial discharges (especially waterlogs) dumped without treatment in watercourses, and the leaching of agricultural lands, as a result of the use of fertilizers, with an enrichment of much more important in summer and autumn.
Author Keywords: Synthetic map, Inaouen catchment area, surface water, physicochemical quality, spatio-temporal.
Volume 25, Issue 1, December 2018, Pages 322–328
Mohamed Ben Abbou1, Loubna Bougarne2, Mahmoud Zemzami3, and Mounia El Haji4
1 Laboratoire d'Ecologie Fonctionnelle et Environnement, Faculté des Sciences et Techniques, Fès 30000, Morocco
2 Laboratoire des Ressources Naturelles et Environnement, Faculté Polydisciplinaire de Taza, B.P. 1223 Taza Gare, Morocco
3 Laboratoire de Géoressources et Environnement, Faculté des Sciences et Techniques, Fès 30000, Maroc
4 Laboratoire des Ressources Naturelles et Environnement, Faculté Polydisciplinaire de Taza, B.P. 1223 Taza Gare, Morocco
Original language: French
Copyright © 2018 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 present work is the result of a study that was carried out over the period 2010-2012, the objective of which was to determine the state of quality and the development of the synthesis maps of the surface waters of the basin. the Oued Inaouen slope, based mainly on the study of the physicochemical and bacteriological parameters of the surface waters. The analyze were performed on 26 well-distributed sampling points at the Oued Inaouen watershed using standard methods. The results of the analyzes revealed a spatio-temporal differentiation along the Wadi Inaouen watershed, following the intervention of natural and anthropogenic factors. The right bank of the basin is characterized by significant mineralization. On the other hand, the left bank is characterized by fresh water, reflecting the effect of limestone and Liassic dolomites of the Middle Atlas on the chemical composition of the water. This state of pollution is more marked downstream, in the stations that receive more rejects. Added to this are the climatic conditions of the region, which are characterized by very low flows of wadis upstream to dry during the summer season. The origin of this pollution is related to household and industrial discharges (especially waterlogs) dumped without treatment in watercourses, and the leaching of agricultural lands, as a result of the use of fertilizers, with an enrichment of much more important in summer and autumn.
Author Keywords: Synthetic map, Inaouen catchment area, surface water, physicochemical quality, spatio-temporal.
Abstract: (french)
Le présent travail, est le fruit d’une étude qui s’est étalée sur la période 2010–2012, dont l’objectif était de déterminer l’état de la qualité et l’élaboration des cartes de synthèse des eaux superficielles du bassin versant de l’Oued Inaouen, en se basant essentiellement sur l’étude des paramètres physico-chimiques et bactériologiques des eaux superficielles. Les analyses ont été effectuées sur 26 points de prélèvement bien répartis au niveau du bassin versant de l’Oued Inaouen selon des méthodes normalisées. Les résultats des analyses ont fait ressortir une différentiation spatio-temporelle, le long du bassin versant de l’Oued Inaouen, à la suite d’intervention des facteurs naturels et anthropiques. La rive droite du bassin se caractérise par une importante minéralisation. Par contre, la rive gauche se caractérise par une eau douce, traduisant l’effet des calcaires et des dolomies liasiques du Moyen Atlas sur la composition chimique des eaux. Cet état de pollution est plus marqué en aval, dans les stations qui reçoivent plus de rejets. A cela se sont ajoutées les conditions climatiques de la région, qui se caractérisent par des débits des Oueds en amont très faibles à sec durant la saison d’été. L’origine de cette pollution est liée aux rejets ménagers et industriels (surtout les margines) déversés sans traitement dans les cours d’eau, et au lessivage des terres agricoles, à la suite de l’utilisation des engrais, avec un enrichissement d’autant plus important en été et en automne.
Author Keywords: Carte de synthèse, Bassin versant d’Inaouen, Eaux de surface, qualité physico-chimique, spatio-temporelle.
How to Cite this Article
Mohamed Ben Abbou, Loubna Bougarne, Mahmoud Zemzami, and Mounia El Haji, “Synthetic map of the quality of the surface waters of the Oued Inaouen watershed (Morocco),” International Journal of Innovation and Applied Studies, vol. 25, no. 1, pp. 322–328, December 2018.
