Depth to Arbuckle Saline Aquifer

Colored contour map of measured depth from surface to top of the Arbuckle Group based 67,014 horizon picks from oil and gas wells. Areas in brick red are where the carbonates of the Arbuckle Group were removed by Mississippian-Pennsylvanian erosion and Middle Pennsylvanian or younger rocks rest directly on the Precambrian. Measured depths range from more than 8000 feet (2438m) in southwest Kansas to less than 250 feet (76m) in the southeast. (Contour Interval 250 feet)