A study of the safe water supply scheme for Dali County in Guanzhong Basin

Abstract：Dali County is an important agricultural area in Guanzhong Basin, and is one of economically active areas in Shaanxi Province. However, water resource shortage has become a factor restricting further economical development. Based on collecting some information and surveying the hydrogeological conditions, the authors evaluated the water quality of the shallow groundwater by conducting groundwater test and using the single norm method. Three areas of safe groundwater resource were found. This paper evaluated the safe area groundwater resource quantity in Dali County by adopting the information collection and numerical simulation technique. At last, the exploitation potential of the safe area groundwater resource was computed. According to the fact of the safe groundwater resource shortage, the safe water supply in Dali County was zoned. The result indicates that the exploitation potential of the safe area groundwater resource in Dali County is up to 1687×104m3/a. This conclusion has important significance for solving the contradiction between the supply and the need of the safe groundwater resource.