Abstract:Because of the long-term exploitation, unreasonable distribution of pumping wells and limited groundwater recharge, Chengxi well field in Suzhou City was over-drafted seriously and formed several cones of depression, threatening the safety of water supply directly. Allowable groundwater withdrawal of Chengxi well field in Suzhou City was calculated through numerical simulation method, and then the overexploitation situation was evaluated based on the exploitation coefficient method, to formulate the limited pumping scheme, predict the groundwater level after conducting the scheme, and analyze the recovery effect. The results showed that, in the year of 2010, the exploitation coefficient of Chengxi well field was 1. 30, and the well field was overexploited seriously. After the implementation of limited pumping scheme, in the year of 2015 and 2020, the exploitation coefficient would be 1. 21 and 0. 97 respectively, showing the effect of pumping-limit scheme would be significant.