Name: Elevation of Aquifer Base (ft) (Rush Springs)

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Description: This dataset represents the base of the Rush Springs aquifer, which is defined as the base of the Marlow Formation by the OWRB for their study released in 2018. The elevation of the aquifer base ranges from 900-1850 feet above mean sea level, with an average of 1414 feet above mean sea level. The interpretation of the base of the aquifer is based on analysis of lithologic data obtained from groundwater well completion reports submitted to the OWRB by licensed well drillers. Control points with zero depth were added along the base of the Marlow Formation as shown on surficial geologic maps published by the Oklahoma Geologic Survey (OGS). The combined depth information was subtracted from a 10-meter Digital Elevation Model (DEM) of the study area’s land surface. The resulting elevation dataset was used with the IDW tool in ArcMap to interpolate the base of the aquifer across the study area. The raster was then converted to a series of contours, using the contour tool in ArcMap, which were then smoothed and manually adjusted by OWRB staff for clarity based on professional judgement. This dataset was created as a product of the Rush Springs hydrologic investigation and is included here for informational purposes only.

Definition Expression: N/A

Copyright Text: Oklahoma Water Resources Board – Planning & Management Division, Technical Studies Section Stanley, T.M., 2002, Geologic map of the Woodward 30’ x 60’ quadrangle, Ellis, Dewey, Roger Mills, and Woodward Counties, Oklahoma: Oklahoma Geological Quadrangle 40, scale 1:100,000. Stanley, T.M and Miller, T.M., 2004, Geologic map of the Anadarko 30’ X 60’ quadrangle, Caddo, Canadian, Custer, Grady, Kiowa, and Washita Counties, Oklahoma: Oklahoma Geological Quadrangle 58, scale 1:100,000. Stanley, T.M. and Miller, G.W, 2005, Geologic map of the Lawton 30’ X 60’ quadrangle, Caddo, Comanche, Cotton, Grady, Kiowa, Stephens, and Tillman Counties, Oklahoma: Oklahoma Geological Quadrangle 63, scale 1:100,000. Stanley, T.M., Miller, T.M., and Suneson, N.H., 2002, Geologic map of the Fairview 30’ x 60’ quadrangle, Alfalfa, Blaine, Dewey, Garfield, Kingfisher, Major, Woods, and Woodward Counties, Oklahoma: Oklahoma Geological Quadrangle 41, scale 1:100,000. Suneson, N.H. and Johnson, K.S., 1996, Geology of Red Rock Canyon State Park: Oklahoma Geology Notes, v. 56, p. 88-105.

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