DS926 Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina -- Clipping boundary extent of the APPZ

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 a polygon representing the extent of the APPZ. Used to clip contours and rasters of this unit.

作为美国地质调查局（U.S. Geological Survey）地下水资源计划（Groundwater Resources Program）的组成部分，本数据集针对佛罗里达含水层系统（Floridan aquifer system）中的选定水文地质单元，构建了其数字表面与厚度数据，以建立更新后的水文地质框架。该要素类（feature class）包含一个表征APPZ范围的多边形要素，可用于裁剪该单元的等值线与栅格数据。