湖北省1：20万区域水文地质调查工作程度图

1∶20万区域水文地质调查以标准分幅为单位，由湖北省水文地质一队、水文地质二队，湖北省水文地质工程地质大队于1970年代-1980年代。共完成20万图幅23.5幅，完成面积185897km2。另有桑植县幅、永顺幅由中国人民解放军建字730部队于1977年完成。

1:200,000 regional hydrogeological surveys were implemented in standard map sheets, undertaken by the First Hubei Hydrogeological Team, Second Hubei Hydrogeological Team, and Hubei Provincial Hydrogeological and Engineering Geological Brigade from the 1970s to the 1980s. A total of 23.5 1:200,000-scale map sheets were finished, covering an area of 185,897 km². Additionally, the Sangzhi County sheet and Yongshun sheet were completed by Unit Jianzi 730 of the Chinese People's Liberation Army in 1977.