ASSESSMENT OF DAMS’ TROPHIC STATUS AS A TOOL FOR WATER RESOURCES’ SUSTAINABLE MANAGEMENT IN MOROCCO: CASE OF THE BOUHOUDA TAOUNATE DAM (MOROCCO)

The Bouhouda's dam was built on Oued Sra, a tributary on the right bank of Ouergha wadi, about 18 km in the north of Taounate town. The waters of this dam are mainly intended for irrigation and drinking water supply (Ministry of town planning and urban planning, 2014). The aim of this paper is to study the quality and the spatio-temporal evolution of the physicochemical of this dam waters parameters of over a period of eight years (2000/2008) in order to have a better knowledge of the mechanisms and the factors that condition the eutrophication of this lake. A classification has been established based on the Carlson index (1977) (Trophic State Index or TSI) and the Vollenweider index (1968), to identify the trophic state of the reservoir waters. Accordingly, these results can be used for decision support in the context of sustainable development of several nearby dams in the Sbou Basin.