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Upstream of Junhe river basin among the mountainous region in the middle of Shandong province is deficient in groundwater resources, and the carbonate karst provides an important water supply source for this area. However, with the development of economy in the basin, much more water is consumed, resulting in the outstanding contradiction between groundwater supply and demand in this region. Hence, in order to develop and manage the groundwater effectively, an evaluation for groundwater is urgent. Based on the evaluation model of groundwater resources, the groundwater numerical simulation software GMS was employed to simulate and evaluate the water balance condition within the year of 2013. The water balance results showed that the total recharge volume in karst water system was 92.7054×10 6 m 3 /a, and the total groundwater discharge volume was 92.5895×10 6 m 3 /a. Overall, the equilibrium difference was +115.9×10 3 m 3 /a with a positive balance.

Evaluation of groundwater resources upstream of Junhe river basin in Shandong Province, China