Prototype updated principal aquifer datasets for three aquifer systems in the Upper Midwest, USA

This geospatial dataset represents a prototype of a finer-scale representation of the principal aquifers of the United States, using four original principal aquifers...本地理空间数据集（geospatial dataset）为美国主要含水层（principal aquifers）的精细尺度表征原型，以4个原始主要含水层为依托进行构建……