Abstract：As the water level in the reservoir of Chaozhou water supply project is generally higher than ground surfaces on both banks when the reservoir is filled up，the city and the farmland along the riversides may be immersed in groundwater. On the basis of numerous investigations and observations，seepage field of the groundwater in multiple aquifers is analysed with a FEM program with a two-dimensional seepage model in the horizontal plane with a multi-layer medium approach. The outcome reveals that the regions behind levees are mostly influenced by the rising groundwater level，especially downtown behind City Levee. Also，it shows that the anti-seepage curtain gives help to lower the groundwater head obviously in the zones protected by Dongxiang and South Levee except downtown behind City Levee where relief wells or filter drain shoud be adopted in addition. The effects of such wells with various head level and space intervals are calculated to provide options for practice and a suggestion is proposed that water head in the wells during flood need to be raised to prevent extreme discharge. In addition，if conditions permit，filter drain is more effective than the well and easier to maintain.
