The Groundwater Quantity and its Distribution Characteristic in the Yellow River Basin

The calculating area of the groundwater in the Yellow River Basin is 749, 620 km(2), and the groundwater quantity is 377.58 x 10(8) m(3), among which the overlapping volume with the suface water is 267.13 x 10(8) m(3). The groundwater quantity in the section Longmen similar to Sanmenxia is 91.02 x 10(8) m(3), taking 24.1% of the total amount of the basin and heading the list of all the second level subareas; The groundwater quantity in Qinghai province is 92.69 x 10(8) m(3), taking 24.5% of the total amount of the basin and standing first on the list of all the provincial districts. The calculating area of groundwater in the whole basin, the groundwater quantity in the plain region, the overlapping grountwater volume between plain and massif region, and the groundwater quantity of subareas are all close to the results of last time. The groundwater quantity in the massif region and the overlapping groundwater quantity with surface water are respectively 265.04 x 10(8) m(3) and 267.13 x 10(8) m(3), and respectively 9.3% and 17.4% lower than the results of last time.