Abstract: By changing the conditions of underlying surface to delay rainfall convergence rate and accumulate rainwater resources, sponge city construction plays a key role in reducing urban rainwater surface runoff and mitigating urban internal sputum. During sponge city construction, increasing rainwater infiltration volume and using rainwater to replenish groundwater are important methods of improving rainwater resource utilization and mitigating urban water shortage. In view of the problems in quantification of groundwater recharge in sponge city construction, we summarized the quantification methods and introduced the basic principles, advantages, disadvantages and the application of each method to provide a reference for evaluating the effect of groundwater recharge in sponge city construction in China.

Key words: sponge city, rainwater facilities, groundwater recharge, rainwater runoff, infiltration