Chemical analyses of water samples were made by the Division of Environment of the Kansas Department of Health and Environment.
The well-numbering system used in this report gives the location of the well or test hole according to the Bureau of Land Management's system of land subdivision.
Annual withdrawals of ground water by wells increased from about 5,000 acre-feet in 1940 to about 140,000 acre-feet in 1974.
The steadily increasing withdrawal rate has not produced long-term declines of water levels that may be distinguished from the effects of climatic changes.
These tracts are designated a, b, c, and d in a counterclockwise direction beginning in the northeast quadrant. The land surface is poorly drained and traversed by relatively few streams.
Where two or more wells are located in a 10-acre tract, wells are numbered serially, beginning with 2, according to the order ill which the wells were inventoried. A typical example is the topographic basin of the prominent northeasterly flowing Rattlesnake Creek where 51 percent of the area contributes runoff to the stream and the remainder of the area has no external drainage.
All of Kiowa, Kingman, Pratt, and Stafford Counties, and parts of Barber, Barton, Edwards, Pawnee, Reno, and Rice Counties are included in the study.