Digital data sets that describe aquifer characteristics of the Enid isolated terrace aquifer in northwestern Oklahoma

This data set consists of digitized water-level elevation
contours for the Enid isolated terrace aquifer in northwestern
Oklahoma. The Enid isolated terrace aquifer covers approximately
82 square miles and supplies water for irrigation, domestic,
municipal, and industrial use for the City of Enid and western
Garfield County. The Quaternary-age Enid isolated terrace
aquifer is composed of terrace deposits that consist of
discontinuous layers of clay, sandy clay, sand, and gravel. The
aquifer is unconfined and is bounded by the underlying
Permian-age Hennessey Group on the east and the Cedar Hills
Sandstone Formation of the Permian-age El Reno Group on the
west. Cedar Hills Sandstone Formation fills a channel beneath
the thickest section of the Enid isolated terrace aquifer in the
midwestern part of the aquifer.

The water-level elevation contours were digitized from a
photocopy of a paper map in a ground-water modeling thesis and
report. The map digitized was published at a scale of 1:62,500
shows that the ground-water elevations in 1973 ranged from about
1,360 feet above sea level at the northwestern edge to about
1,150 feet above sea level at the southeastern edge of the
aquifer.