Moroccan reservoirs water quality: A review

A review of the existing Moroccan reservoirs studies (number and fields studies) was done to help reveal the strategy used in accordance with the actual challenges. Three major scientific search tool (Scopus, Science Direct and ResearchGate) were used with keywords in English and French (e. g. Moroccan reservoir, nutrients, freshwater, water quality). A documentation of 49 articles and 30 theses was collected. Morocco have 139 reservoirs. Only 20 of them have been subject to scientific studies that took place between 1987 and 2016. The total number of field studies includes 19 in ecology, 17 in toxicology, 12 in hydrobiology, 11 in sedimentology, 10 in hydrogeochemistry, and 8 in biology. Spatial comparison of physical, chemical and biological key variables was done. The comparison of observations values obtained was made between the reservoirs existing in the same basin (e.g. Oum Rbia basin). The water column has usually the same phytoplankton species with a difference in their appearances and /or their disappearance time. This review prove the urgent needfor future research, monitoring and evaluation of Moroccan water reservoirs.