Groundwater Exploitation Influence on Crescent Lake Water Level and Its Countermeasures
Crescent Lake is the name of the Dunhuang Basin for years, due to excessive extraction of groundwater, which destroyed the dynamic balance of the district water resources and resulted in Crescent Lake groundwater levels declining. Through water balance calculation in the surrounding areas of the lake, changes of the monitoring holes of groundwater level in the years and analysis on process of Crescent lake water level declining, the article clarifies the range of the well for groundwa-ter exploitation which influence on the lake water level. It puts forward to close up 155 wells of Water Works in Heshui, Ming-shan Villages as well as Dunhuang and Qili town, reduce 12,978,000 m3 of the exploitation volume in the year, can effective-ly solve the Crescent Lake water level declining issues caused by the wells exploitation.