Abstract

Climate change affects surface water resources through changes in evaporation, surface water recharge, temperature, runoff, and rainfall. Such changes affect the mobilization of nutrients and the distribution and mobility of pollutants in surface water systems. The present study attempts the physiochemical and hydrochemical characterization of surface-quality water in the Share-Tsaragi and its environs in Kwara State, Nigeria. A total of ten (10) water samples were collected from the study area. The physiochemical characteristics such as pH and total dissolved solids (TDS) were determined to understand the surface water characteristics, and the results showed that pH (6.39 to 7.67) and total dissolved solids (35 to 230 mg/l) were significantly moderate across the different stations. This indicated that all the water samples are good for drinking and irrigation. The hydrochemical data were utilized to generate graphical representations and scientific computations that determined the relationship between chemical components and water quality. The main elements found in the samples were Ca‐HCO3 - . Piper diagram indicates that the water samples are made of mixed Ca‐Na‐HCO3 - and mixed Ca‐Mg, indicating transient hardness. Gibbs plots show that water chemistry is primarily influenced by rock-water interactions and precipitation processes. The Gibbs plots show a change with increased bicarbonate and lower TDS, indicating salt intake through precipitation.

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