Alluvial basin statistics of the Southwest Principal Aquifers (SWPA) study.

SWPA_alvbsn is a vector dataset of alluvial-fill basin statistics for the Southwest United States. Statistics for each basin include physical details such as area,...SWPA_alvbsn是美国西南部冲积充填盆地（alluvial-fill basin）统计矢量数据集（vector dataset）。各盆地的统计信息涵盖面积等物理细节，……