DS926 Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina -- Polygon regions of low permeability units forming the base of the Upper Floridan aquifer

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. Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system were developed to define an updated hydrogeologic framework as part of the U.S. Geological Survey Groundwater Resources Program. This feature class contains polygons depicting low permeability units used to define the base of the Upper Floridan aquifer.

本批数据发布于2016年10月1日之前，彼时美国地质调查局（U.S. Geological Survey, USGS）规范科学数据审核、批准与发布的政策尚未生效；该政策参照《美国地质调查局勘测手册第502.8章：基础科学实践：科学数据发布的审核与批准》制定。作为美国地质调查局地下水资源计划的组成部分，本研究构建了佛罗里达含水层系统（Floridan aquifer system）中选定水文地质单元的数字表面与厚度数据，以明确更新后的水文地质框架。本要素类（feature class）包含用于表征上佛罗里达含水层基底的低渗透单元多边形要素。