Abstract
Abstract Wadi Zegzel is a mountain stream inside a site of ecological and biological interest (SIBE) in the Northeast of Morocco. The impact of various anthropogenic activities (agricultural, tourism ...) was obvious. It is suggested that surveillance of Wadi Zegzel is necessary for the proper management and preservation of this heritage. Normed Principal Component Analysis (PCA) was applied to standardize the data to evaluate correlations between physicochemical variables (T ° C, pH, BOD5, COD, NH4 ...) and microbiological variables (FTMA, TC, FC, EC, SF ...) and their spatiotemporal structure (the spatial effect and the seasonal effect).The upstream Zegzel is characterized by a gradient of mineralization in winter and it’s downstream by a gradient of faecal pollution during the summer. The waters of the WadiZegzel are below the limit of Moroccan standards for the quality of surface water and water intended for irrigation. Therefore, they are considered of good quality for agricultural uses.
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