Study on development and utilization of groundwater resources along Yellow River in Zhengzhou

In order to realize the development and utilization of groundwater resources along the Yellow River,and to avoid or reduce the harmful effects of centralized exploitation on the ecological and geological environment,ten years of continuous monitoring of the water table,groundwater quality,groundwater yield and some other changes in environmental geology was carried out in the study area.The hydrogeological parameters were recalculated and the safe groundwater yield in the groundwater source area was verified with the methods of surveying,remote sensing interpretation,and water balance and numerical modeling.The results indicated that the exploitation of underground sources had little influence on the stability of the Yellow River embankment;the groundwater showed a 1.5 m drawdown in the groundwater source area after the operation of the Xiaolangdi dam began,but the recharge of the Yellow River showed no change;and the northward movement of the river within 800 m had little influence on the groundwater source area.Due to the changing modes of water utilization of agriculture and fisheries and the problems of disorderly exploitation of groundwater,the legislation protection of the groundwater source area should be enhanced,and joint planning for groundwater and surface water,adoption of exploitation,supplements,and regulation of water resources are the key ways to realize harmonious eco-environmental and sustainable exploitation of groundwater resources.