This article provides an analytical solute transport model to investigate the potential of groundwater contamination by polluted surface water in a two dimensional domain. The clogging of streambed which makes the aquifer partially penetrated by the stream, is considered in the model. The impacts of pumping process, hydraulic conductivity and clogging layer on the quality of water produced from nearby drinking water wells are evaluated. It is found that results are consistent with numerical simulation conducted by MODFLOW software. Moreover, the model is applied using data of contamination occurrence in Malaysia, where high contaminants concentrations are found close to streams. Results show that the pumping activities (rate and time period) are crucial factors when evaluating the risk of groundwater contamination from surface water. Additionally, this study illustrates that the increase in either hydraulic conductivity or leakance coefficient parameters due to the clogging layer will enlarge the area of contamination. The model is able to determine the suitable pumping rate and location of the well so that the contamination plume never reaches the extraction well, which is useful in constructing riverbank filtration sites.

本文提供了一种分析溶质运移模型，以研究二维域中被污染的地表水污染地下水的潜力。在模型中考虑了使水层部分渗透的含水层的堵塞。评估了抽水过程，水力传导率和堵塞层对附近饮用水井出水水质的影响。发现结果与由MODFLOW软件进行的数值模拟是一致的。此外，该模型是根据马来西亚的污染发生数据应用的，在马来西亚，靠近河流的污染物浓度很高。结果表明，抽水活动（流量和时间）是评估地表水污染地下水的风险的关键因素。另外，这项研究表明，由于堵塞层引起的水力传导率或泄漏系数参数的增加将扩大污染面积。该模型能够确定合适的抽水速度和井的位置，从而使污染羽流永远不会到达提取井，这对于构建河岸过滤站点非常有用。