This peper is the result of hydrogeological survey engineering.[Objective] Golmud is a rising city on the Qinghai- Tibet Plateau located on the southern edge of the Qaidam Basin. With the construction of various industrial parks and the establishment of the largest potash production base in China, the important role of groundwater resources has become more prominent. For the operation of industrial and mining enterprises and potash production bases, it is very important to find out the amount of underground water resources.[Methods] Based on data collection, dynamic long view, borehole pumping test, etc., the regional groundwater natural resources and allowable exploitation were evaluated by using the recharge sum method, section runoff method, excretion sum method and combined numerical simulation method, etc.[Results] The amount of groundwater natural resources in the alluvial fan of Golmud River is 199.8×10⁴ m³/d, and the allowable exploitation amount is 100×10⁴ m³/d.[Conclusion] Millions of tons of underground water sources exist in Golmud area. To ensure an adequate recharge of groundwater, the condition for sustainable and stable exploitation is that the planned exploitation of six water sources (built/under construction/planning) reaches one million tons. Finally, a million- ton groundwater source with B + C groundwater reserves of 100×10⁴m³/d is submitted.
Highlights: The regional groundwater flow model has been improved based on the latest detailed survey of groundwater; The method of "drought and rainy years" is used to set the inflow volume scene of the model, the regulation capacity of aquifers and the ability of continuous water supply in dry years have been fully tested, and the evaluation results have high credibility.