Assessment of groundwater vulnerability and risk to pollution in Zhangji

On the basis of the current assessment methods for groundwater vulnerability and risk to pollution and of the local situation and available data in Zhangji,GRADIC and GRADICL methods were created by selecting the assessment parameters and used in the study area.The distribution maps of groundwater vulnerability and risk were derived and the results show that the study area is more or less vulnerable or risky to pollution than other areas.Comparison of the assessment results between the two methods illustrates the difference in groundwater vulnerability and risk to pollution.The assessment results will be beneficial to the scientific management and effective protection of groundwater resources in the area.