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祁连山西段诸盆地地下水的形成与分布不仅取决于第四系厚度、孔隙、冻土等条件，更重要的还取决于山前平原与基岩的接触关系及其地质结构。盆地内地表水与地下水的相互转化，不仅使地下水的水质、水量具明显的水平分带性，而且也影响着主干河流流量的大小。在海拔３８００ｍ以上多年冻土区，地下水以冻结层上水和冻结层下水形式存在；在海拔３８００ｍ以下非多年冻土区，地下水主要以潜水形式存在，富水性中等或强。诸盆地地下水主要以ＨＣＯ３－Ｃａ－Ｍｇ型水为主，水质优良
The formation and distribution of groundwater in all the basins in the western Qilian Mountains depend not only on the Quaternary thickness, porosity and permafrost conditions, but also on the contact between the piedmont plain and bedrock and its geological structure. The interconversion of surface water and groundwater in the basin not only makes the water quality and the amount of groundwater obvious horizontal zonation, but also affects the size of the trunk river flow. In permafrost regions above 3800m above sea level, groundwater exists as freezing water and freezing water; in non-permafrost regions below 3800m above sea level, groundwater mainly exists in the form of submersion, with moderate or strong water-richness. Groundwater in all basins is dominated by HCO3-Ca-Mg type water and has good water quality