Based on the analysis of hydrogeological conditions in Nanhedi of Jia County,Yulin,Shaanxi,a numerical model was developed to simulate the allowable yield of seepage well in the exploitation conditions.The paper work out the allowable water-supply: in median water period,the allowable water-supply is 72300 m3/d;and in the dry period,the allowable water-supply is 47600 m3/d.When seepage wells are used to exploit water resources the inter-well interference is relatively small.Through the analysis of the simul...