Hydrogeochemical investigations have been carried out in a semi-arid region of Aland taluk of Karnataka State, India. The analysis has been done to examine the quality of groundwater for drinking, domestic and irrigational purposes. In this concern, thirty-two groundwater samples were collected in pre-monsoon (April 2016) and post-monsoon season (November 2016), from the different location within the study area. These samples have been further analysed for different ions such as CO₃²⁻, HCO₃⁻, NO₃⁻, Ca²⁺, Mg²⁺, Na⁺, K⁺ Fe²⁺, SO₄²⁻, Clˉ and F⁻ to evaluate the hydrochemical behaviour with SSP (sodium soluble percentage), SAR (sodium absorption ratio), % Na (percentage sodium), RSC (residual sodium carbonate), KR (Kelly’s ratio), PI (permeability index) and MH (magnesium hazards). These positive and negative ions have been further correlated with the maximum annual rainfall within the study area to find out the variations between these ions for the precipitation. Suitability of groundwater for drinking purposes around the catchment was not suitable except in a few places. Irrigational suitability of groundwater showed that the water is within the limit for irrigation except in a few locations. Wilcox diagram depicts that 90% of the pre-monsoon samples and 65% of the post-monsoon samples fell into excellent to good category zone. US salinity diagram explains that 71% of pre-monsoon samples belong to medium-salinity-hazard to low-sodium-content zones, whereas 50% of post-monsoon samples fall into high-salinity-hazard to low-sodium-content zone. Gibbs’s plot showed that the water–rock processes control the geochemistry of the Aland region in both monsoon seasons. Chadha’s diagram depicts that 56.25% of the groundwater samples fall under the subfield of Ca²⁺–Mg²⁺–Cl⁻ water type with permanent hardness during pre-monsoon season, whereas 50% of groundwater samples falls under the subfield of Ca²⁺–Mg²⁺–HCO₃⁻ water type with temporary hardness during post-monsoon season.

在印度卡纳塔克邦阿兰塔卢克的半干旱地区进行了水文地球化学调查。已经进行了分析以检查饮用水，生活用水和灌溉用水的地下水质量。考虑到这一点，在研究区域的不同位置，分别在季风前（2016年4月）和季风后（2016年11月）收集了32个地下水样品。这些样品都得到了进一步分析不同离子如CO ₃ ^2-，HCO ₃ ^-，NO ₃ ^- ，钙²⁺，镁²⁺，钠⁺，K ⁺的Fe ²⁺，SO ₄ ^2-，Cl和F ^-用SSP（钠可溶百分比），SAR（钠吸收率），％Na（钠百分比），RSC（残余碳酸钠），KR（凯利比），PI（渗透率指数）和MH（镁危害）评估水化学行为）。这些正离子和负离子已与研究区域内的最大年降雨量进一步关联，以找出这些离子之间的降水差异。除少数地方外，流域附近的地下水是否适合饮用。地下水的灌溉适宜性表明，除少数几个地方以外，水都在灌溉范围内。Wilcox图描述了90％的季风前样本和65％的季风后样本属于优良至良好类别区域。美国盐度图解释说，季风前样品中有71％属于低钠含量区域的中盐度危害，而季风后样品中有50％属于低钠含量区域的高盐度危害。吉布斯的图表明，在两个季风季节中，水-岩石过程控制着奥兰地区的地球化学。Chadha的图描述了56.25％的地下水样本属于Ca子场²⁺ –Mg ²⁺ –Cl ^–季风前季节具有永久硬度的水类型，而50％的地下水样品落在Ca ²⁺ –Mg ²⁺ –HCO ₃ ⁻子域下方的水域中，具有暂时的硬度季风季节。