Groundwater and artificial reservoirs are in a continuous dynamic interaction that can affect not only water quantity but the quality. In this paper, taking the DR (Doumen Reservoir) as an example, the level dynamic changes between the DRTS (Doumen Reservoir Test Section) and groundwater were discussed, and the water quality used by SFE (single-factor evaluation) and WQI (water quality index) method were analyzed. A coupling model is presented to quantify the leakage impact range and groundwater budget and regionalize the impact of surface water on regional groundwater quality. The results show that the level dynamics of the reservoir and groundwater are highly consistent, with a cross-correlation coefficient of 0.85 and a lag time of about 7 days. The reservoir recharges the groundwater with an increase-decrease-stationary wave dynamic potential. After 3 years of operation of the DR, the groundwater still is recharged, the groundwater level will rise obviously, with a maximum of 8.5 m. The amount of surface water recharged is always 0. NH₃-N, and COD will have varying degrees of impact, both of which are mainly the pollution halo around North Lake. The results can provide support for water resources management and environmental protection of urban plain reservoirs.

中文翻译：

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西北城市平原斗门水库与区域地下水相互作用的定量化与区域化

地下水和人工水库处于持续的动态相互作用中，不仅会影响水量，而且会影响水质。本文以斗门水库（DR）为例，讨论了斗门水库试验段（DRTS）与地下水之间的水位动态变化，以及单因素评价法（SFE）和水质指数（WQI）使用的水质。质量指标）方法进行了分析。提出了一个耦合模型来量化渗漏影响范围和地下水预算，并将地表水对区域地下水水质的影响区域化。结果表明，水库水位动态与地下水位高度一致，互相关系数为0.85，滞后时间约为7天。水库为地下水补充了平稳的波动动能增加和减少。DR运行3年后，地下水仍被补给，地下水位将明显上升，最高8.5 m。补充的地表水始终为0。NH_3- N和COD会产生不同程度的影响，这两者主要是北湖周围的污染晕。研究结果可为城市平原水库的水资源管理和环境保护提供支持。