Digital data sets that describe aquifer characteristics of the alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake in northwestern Oklahoma

This data set consists of digital hydraulic conductivity values
for the alluvial and terrace deposits along the Beaver-North
Canadian River from the panhandle to Canton Lake in northwestern
Oklahoma. Ground water in 830 square miles of the Quaternary-age
alluvial and terrace aquifer is an important source of water for
irrigation, industrial, municipal, stock, and domestic supplies.
The aquifer consists of poorly sorted, fine to coarse,
unconsolidated quartz sand with minor amounts of clay, silt, and
basal gravel. The hydraulically connected alluvial and terrace
deposits unconformably overlie the Tertiary-age Ogallala
Formation and Permian-age formations.

Six zones of ranges of hydraulic conductivity values for the
alluvial and terrace deposits reported in a ground-water
modeling report are used in this data set. The hydraulic
conductivity values range from 0 to 160 feet per day, and
average 59 feet per day.

The features in the data set representing aquifer boundaries
along geological contacts were extracted from a published
digital surficial geology data set based on a scale of
1:250,000. The geographic limits of the aquifer and zones
representing ranges of hydraulic conductivity values were
digitized from folded paper maps, at a scale of 1:250,000
from a ground-water modeling report.

Ground-water flow models are numerical representations that
simplify and aggregate natural systems. Models are not unique;
different combinations of aquifer characteristics may produce
similar results. Therefore, values of hydraulic conductivity
used in the model and presented in this data set are not
precise, but are within a reasonable range when compared to
independently collected data.