An investigation on the Kerwa reservoir water located in central parts of India (Bhopal, Madhya Pradesh) has been carried out to assess the hydrochemical variations in different seasons and possible influencing factors. Temporal chemical variations in reservoir water were evaluated for all the three seasons by analyzing two hundred forty surface water samples from ten different sites along the reservoir periphery covering inlet and outlet points. The analytical results indicate that Kerwa reservoir water is mildly alkaline, and the order of dominance for ions was found to be Ca²⁺ > Mg²⁺ > Na⁺ > K⁺ and HCO₃⁻ > Cl⁻ > SO₄²⁻. The major chemical facies present are Ca-Mg-HCO₃, Ca-Mg-Na-HCO₃-Cl, Ca-Mg-HCO₃-Cl, and Ca-Mg-Cl-HCO₃. Piper and Chadha plots infer that seasonality exert a strong control on the water chemistry. Rainwater dominate the reservoir water chemistry during monsoon, evaporation dominates during summer, while multiple geochemical reactions control the reservoir water chemistry during winter. The extent of ion exchange was evaluated by chloro-alkaline indices as well as (Ca²⁺ + Mg²⁺)/(Na⁺ + K⁺) versus Na⁺-Cl⁻ plot. Contribution of carbonate and silicate minerals was evaluated using characteristic ionic ratios and scatter plots. It is found that weathering of silicate rocks lead to higher Ca²⁺ and Mg²⁺ in the reservoir water, while evaporite dissolution and to a some extent ion exchange and base flows are found to control the Na⁺ and K⁺ concentrations. With the growing scenario of contamination in adjoining water bodies, the study on water quality and associated geochemical processes becomes necessary for Kerwa reservoir, which can form a potential freshwater reserve in this region for future generations.

已经对印度中部（博帕尔，中央邦）的克尔瓦水库水进行了调查，以评估不同季节的水化学变化及其可能的影响因素。在整个三个季节中，通过分析来自储层外围（覆盖进水口和出水口）的十个不同地点的240个地表水样品，评估了储层水中的时间化学变化。分析结果表明，Kerwa水库水是弱碱性，和优势对于离子的顺序被发现是钙²⁺ > Mg的²⁺ >的Na ⁺ >ķ ⁺和HCO ₃ ^- >氯^- > SO ₄ ^2-。存在的主要化学相是Ca-Mg-HCO ₃，Ca-Mg-Na-HCO ₃ -Cl，Ca-Mg-HCO ₃ -Cl和Ca-Mg-Cl-HCO ₃。派珀（Piper）和查德（Chadha）的图表明，季节性对水化学有很强的控制作用。季风期间，雨水在储层水化学中占主导地位；夏季，蒸发在中占主导地位；冬季，多种地球化学反应控制着储层水化学。离子交换的程度通过氯碱性指数，以及（CA评价²⁺ + Mg的²⁺）/（NA ⁺ + K ⁺）与钠⁺ -Cl ^-情节。使用特征性离子比率和散布图评估了碳酸盐和硅酸盐矿物的贡献。发现硅酸盐岩石的风化导致储层水中较高的Ca ²⁺和Mg ²⁺，而蒸发物的溶解以及一定程度上的离子交换和碱流控制Na ⁺和K ^+的浓度。随着邻近水体污染的加剧，对克尔瓦水库的水质和相关地球化学过程的研究变得必要，这可以为该地区的子孙后代形成潜在的淡水储量。