Abstract: In view of the serious problem of groundwater overdraft in North China, the experimental river sections of Hutuo River, Fuyang River,and Nanjuma River in Hebei Province were selected to evaluate the effect of groundwater recharge. The evaluation index system of groundwater recharge effect was established by selecting indexes from the six aspects of groundwater level recovery rate, water surface area change rate, water quality improvement degree, water ecology improvement degree,and public satisfaction degree. With AHP,a simple and practical index calculation method was selected to calculate and analyze the changes of indexes before and after the river reach replenishment, and finally to assess the effect of ecological replenishment. The results show that at the end of the groundwater recharge, the average infiltration rate covering the three pilot sections of Hutuo River, Fuyang River,and Nanjuma River is 65%, the relative recovery rate of groundwater level is 36%, 17%, and 6% respectively, the degree of groundwater quality improvement is 51%, 34%, 90% respectively, the water surface area is increased by a total of 8.56 km², and the water ecological improvement degree is 46%, 87%, 94% respectively. In addition, the public satisfaction is 90%, 90%, and 80% respectively. The comprehensive assessment score of Hutuo River, Nanjuma River, and Fuyang River is 84, 64,and 47, respectively, and the corresponding evaluation grade is "very good" "good", and "normal", respectively. This results of the three pilot river sections are basically consistent with the actual water replenishment effect.

Key words: groundwater, recharge, analytic hierarchy process, index system, effect assessment