DS926 Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina -- Raster surface depicting the top of the LAPPZ

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 gridded surface depicting the top of the lower Avon Park permeable zone in feet relative to NGVD29.为构建更新后的水文地质框架，作为美国地质调查局地下水资源计划的组成部分，研究人员开发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集。本要素类（Feature Class）包含一幅网格化表面数据，用以表征下埃文帕克渗透带的顶部高程，其数值以相对于1929国家垂直基准面（NGVD29）的英尺为单位。