Design and application for groundwater dynamics monitoring network in Guanzhong Basin

Based on the existing monitoring network for Guanzhong Basin,by using GIS technology,this paper combined the construction of monitoring sections and compilation of groundwater regime type maps to adjust and optimize the monitoring network in Guanzhong Basin.9 monitoring sections(4 vertical and 5 horizontal) were constructed.This new network included 239 water holes in total(120 holes for phreatic water and 119 holes for confined water),of which 165 holes were old monitoring wells,and 74 were newly drilled.It can reveal comprehensively the groundwater dynamic changes over Guanzhong Basin.In 2011,the present network provided basic dynamic monitoring data for the "Serious water-lack area groundwater monitoring project" to determine the positions of main arid areas,which can serve for the government to look for water resource when confronted with draught.