Potentiometric surface, Mississippi River Valley alluvial aquifer, spring 2016, raster format, in meters

A potentiometric surface map for spring 2016 was created for the Mississippi River Valley alluvial (MRVA) aquifer, which was referenced to the North American Vertical...已为密西西比河流域冲积（MRVA）含水层绘制2016年春季的测压水面图（potentiometric surface map），该图以北美垂直（原文表述未完整）为参照基准。