Historical boundary of the Death Valley regional ground-water flow system by Harrill and Prudic (1998), for the Death Valley regional ground-water flow system study, Nevada and California

These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This digital data set is a historical definition of the extent (approximately 42,600 square-kilometers) and lateral boundary of the Death Valley regional ground-water flow system (modified from Harrill and others, 1988; and Harrill and Prudic, 1998). Harrill and others (1988) developed boundaries for the major ground-water flow systems in the Great Basin region of Nevada, Utah, and adjacent states using the boundaries of hydrographic areas. Harrill [...]

本数据集发布于2016年10月1日美国地质调查局（USGS）科学数据审核、批准与发布政策生效日期之前——该项政策详见《美国地质调查局调查手册》第502.8章《基础科学实践：科学数据发布的审核与批准》。本数字数据集为死亡谷区域地下水流系统的历史范围（约42600平方千米）与侧向边界的定义，改编自Harrill等（1988）及Harrill与Prudic（1998）的研究成果。Harrill等（1988）借助水文区域边界，为内华达州、犹他州及邻近各州的大盆地区域主要地下水流系统划定了边界。Harrill [...]