Mt. Simon Formation

The Mt. Simon Formation is the deepest aquifer in the county and consits of mor than 2,000 feet of fine- to course-grained sandstone. The water quality diminishes with depth and is commonly saline below a depth of 1,300 feet. The groundwater is warmer and more mineralized than the water in the overlying Ironton-Galesville Formation water (Suter et al. 1959).