Kansas Geological Survey, Public Information Circular (PIC) 2
Salt Contamination of Ground Water in South Central Kansas--Figure 1
Figure 1--Areas with known or potential saltwater contamination in south-central Kansas. Areas identified as "known" natural salt contamination have saltwater within the freshwater aquifer. In the areas labeled "potential" natural salt contamination, subsurface bedrock formations containing salt or saltwater are in contact with the overlying freshwater aquifers. Groundwater Management District boundaries (GMD) 2 and 5 are shown in blue.
Kansas Geological Survey, Geology Extension
Web version Nov. 1995
http://www.kgs.ku.edu/Publications/pic2/fig1.html