Abstract:
River as an important source of surface water plays important roles in daily human life. However the quality of the surface water is a matter of serious concern because various types of pollution from domestic and industrial wastewater may potentially affect the quality as the common ways of discharging these types of pollutants is via river. The aim of this study is to understand the complex relationships between the water quality and the related driving factors such as land use and landcover in Oshogbo by analyzing the spatial distribution of water quality parameters, the land use and cover of the study area and determining the relationship between the land use and water quality parameters. Twelve surface water samples were collected randomly from the study area during raining season using Global Positioning System and Google earth. The water samples were collected and analysed in the laboratory and nine (9) physico-chemical properties including conductivity, pH, total suspended solid (TSS), total dissolved solid (TDS), total solid (TS), phosphate, chloride, nitrate and total nutrient were obtained. The inverse distance weighted method of interpolation was used to show the spatial distribution of the nine (9) physico-chemical properties in Osogbo because of the outliers in the data. A one way analysis of variance that was conducted to consider the effect of land use on the nine water quality parameters at p = 0.05 confidence interval reveals that there is no significant variation between the water quality parameters in the study area as shown by the p values; pH = 0.438, TSS= 0.702, TDS= 0.264, TS= 0.676, Phosphate= 0.404, Total nutrient= 0.404, Chloride= 0.74, Nitrate = 0.405. The regression analysis was done in order to determine the relationship between the land use and the water quality parameters. The regression analysis was conducted at a p value = 0.05
