ISSN: 2582-788X (Online)
Assessment of some aspects of the physico-chemical parameters of surface water at Karshi reservoir (Dam Site), Federal Capital Territory, Abuja, Nigeria
Assessment of some aspects of the physicochemical parameters of surface water in Karshi Dam Site, Federal Capital Territory, Abuja, Nigeria was evaluated from January 2018 to December 2019. The aim of this study was to determine some aspects of physicochemical parameters in order to determine the water quality condition of the reservoirs for conservation, management, and sustainable use. Water samples were collected from three sampling stations and analyzed using standard methods, procedures, and instruments. The results of the physico-chemical parameters in Karshi reservoir are recorded. The mean values of physicochemical parameters were all within the recommended WHO limits except turbidity and nitrate. Analysis of Variance (ANOVA) indicated that transparency, turbidity, nitrate, phosphate, and iron were strongly influenced by seasonal variation. Pearson’s correlation analysis indicated a positive significant relationship was observed between turbidity-EC (r = 0.576), turbidity-Fe2+ (r = 0.832), transparency-Fe2+ (r = -0.799), DO-BOD (r = 0.922), DO-Nitrate (r = 0.594), EC-Fe2+ (r = 0.624), while a negative significant relationship was observed between transparency-turbidity (r = -0.941), transparency-EC (r =-0.616) and turbidity-Nitrate (r =-0.941). This study has shown that the reservoirs fall within “good/average” water quality, with a class II level of pollution, which is indicative of moderate pollution, especially during the rainy season. Effective monitoring of the reservoir and regulation of activities in and around the reservoir are recommended. Also, water from the reservoir should be treated before consumption.