Altitude of the top of the Upper Hell Creek hydrogeologic unit in the Williston structural basin

These data represent the altitude, in feet above North American Vertical Datum of 1988 (NAVD88), of the Upper Hell Creek hydrogeologic unit in the Williston...本数据集记录了威利斯顿区域内上地狱溪（Upper Hell Creek）水文地质单元相对于1988年北美垂直基准面（North American Vertical Datum of 1988, NAVD88）的海拔高度，单位为英尺。