Description: The boundary of the Cimarron River alluvium and terrace aquifer largely follows the aquifer area presented in Adams an Bergman (1996), which was based on the outcrop extent of Cimarron River alluvium and terrace deposits as shown on Oklahoma Geological Survey (OGS) hydrologic atlases by Morton (1980), Bingham and Moore (1983), and Bingham and Bergman (1980). The defined aquifer area was expanded as part of this investigation to reflect changes to the outcrop extent of alluvium and terrace deposits as shown on more recent OGS geology quadrangle maps by Stanley and Suneson (2002), Miller and Stanley (2003), Stanley, Miller, and Suneson (2002), Stanley and Miller (2008), and Stanley (2021). The most apparent changes occurred along the northern and northwestern boundaries of the aquifer in T19N, R06WI, T24N, R11WI, and T27N, R15WI; thin terrace deposits and cover sands were expanded into these areas in the most recent geology maps. The deposits in these areas have little or no saturated thickness. The outcrop area of Permian-age Cedar Hills Sandstone and Flowerpot shale in parts of Woods and Alfalfa counties was modified based on available well drillers lithologic logs from the OWRB database. Drillers logs which indicated at least 10 feet of unconsolidated sediments were considered part of the defined aquifer area. The extent of the Cimarron River aquifer covers all or parts of Township 15N, Range 05WI, and Township 16N, Ranges 03WI, 04WI, 05WI, 06WI, and 07WI, and Township 17N, Ranges 03WI, 04WI, 05WI, 06WI, 07WI, and 08WI, and Township 18N, Ranges 04WI, 05WI, 06WI, 07WI, 08WI, and 09WI, and Township 19N, Ranges 06WI, 07WI, 08WI, 09WI, and 10WI, and Township 20N, Ranges, 06WI, 07WI, 08WI, 09WI, and 10WI, and Township 21N, Ranges 08WI, 09WI, 10WI, 11WI, and 12WI, and Township 22N, Ranges 09WI, 10WI, 11WI, 12WI, 13WI, 14WI, and 15WI, and Township 23N, Ranges 10WI, 11WI, 12WI, 13WI, 14WI, 15WI, and 16WI, and Township 24N, Ranges 10WI, 11WI, 12WI, 13WI, 14WI, 15WI, 16WI, and 17WI, and Township 25N, Ranges, 12WI, 13WI, 14WI, 15WI, 16WI, and 17WI, and Township 26N, Ranges 12WI, 13WI, 14WI, 15WI, 16WI, 17WI, and 18WI, and Township 27N, Ranges 13WI, 14WI, 15WI, 17WI, and 18WI.
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Copyright Text: Oklahoma Water Resources Board - R. Jacob Hernandez, Alan K. LePera, Technical Studies
Description: Areas defined as having little or no saturated thickness are those where the saturated thickness of Quaternary-age deposits is less than or equal to 5 feet. Saturated thickness was determined by subtracting the altitude of the potentiometic surface from the altitude of the aquifer base. Areas with questionable saturated thickness estimates determined from the raster substraction were QC'd by looking at indiviual well driller's reports, specifically the depth-to-first-water input. Areas with little to no saturated thickness were considered to have limited groundwater flow.
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Copyright Text: Oklahoma Water Resources Board - Alan K. LePera, Technical Studies
Description: This dataset represents the base of the Cimarron River alluvium and terrace aquifer, which is defined as the boundary contact between the Quaternary-age alluvium and terrace deposits of the Cimarron River and underlying Permian-age bedrock units.The elevation of the aquifer base ranges from less than 900 feet in Logan County to 1650 feet in Woods County. 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 were added along the defined boundary of the aquifer to aid in the interpolation process, resulting in a depth-to-base raster in feet below land surface. The depth-to-base raster was subtracted from a 10-meter Digitial Elevation Model (DEM) raster of the study area's land surface to create the altitude of the base raster. Contours with a 50 foot interval were extracted from the alititude map and manually smoothed and adjusted by OWRB technical staff to better reflect natural conditions and remove "negative" water areas where the elevation of the base was interpolated to be higher than the elevation of the land surface. This dataset was created as a product of the Cimarron River alluvium and terrace hydrologic investigation and is included here for informational purposes only.
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Copyright Text: Oklahoma Water Resources Board - Water Rights Adminstration Division, Technical Studies Section. Stanley T.M., and Suneson N.H., 2002, Geologic Map of the Buffalo 30'X60' Quadrangle, Ellis, Harper, Woods, and Woodward Counties, Oklahoma: Oklahoma Geologic Quadrangle 39, Scale 1:100,000. Stanley T.M., Miller, G.W., Suneson, N.H., 2002, Geologic Map of the Fairview 30'X60' Quadrangle, Alfalfa, Blaine, Dewey, Garfield, Kingfisher, Major, Woods, and Woodward Counties, Oklahoma, Oklahoma Geologic Quadrangle 41, Scale 1:100,000. Stanley, T.M., 2021, Geologic Map of the Oklahoma City North 30'X60' Quadrangle, Canadian, Kingfisher, Lincoln, Logan, Oklahoma, and Payne Counties, Oklahoma, Oklahoma Geologic Quadrangle 99, Scale 1:100,000
Name: Elevation of Potentiometric Surface (ft), 2016
Display Field: Id
Type: Feature Layer
Geometry Type: esriGeometryPolyline
Description: This dataset represents the Potentiometric surface of the Cimarron River alluvium and terrace aquifer created from depth-to-water measurements collected by OWRB staff from 178 groundwater wells within the study area on March 2-4, 2016. Water-level altitude at each well location was estimated by subtracting the depth-to-water measurement from the local land-surface altitude; depth-to-water measurements ranged from 0.9 to 61.3 with a mean of 17.0 feet below land surface. The 2016 potentiometric surface was interpolated using the mathematical deterministic method (inverse distance weighted) of Shepard (1968) and contoured at an interval of 50 feet. The computer generated altitude contours were manually adjusted to better conform to land-surface topography. The altitude of the 1986 potentiometric surface was highest in Woods County along the northern edge of the defined aquifer boundary and lowest near the Cimarron River in Logan County.
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Copyright Text: Oklahoma Water Resources Board - R. Jacob Hernandez, Alan K. LePera, Technical Studies
Description: Saturated thickness map of the Cimarron River alluvium and terrace aquifer. The Saturated thickness raster was created by substracting the altitude of the 2016 potetiometric surface from the altitude of the aquifer base as determined from lithologic logs. Saturated thickness of the aquifer ranges from 0.0 to a little more than 100.0 feet, with an mean of about 30 feet. Saturated thickness generally thins toward the edges of the aquifer boundary and major Cimarron River tributaries (Eagle Chief Creek, Indian Creek, and Turkey Creek). Saturated thickness along the major Cimarron River tributaries ranges from 0–25 feet.
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Copyright Text: Oklahoma Water Resources Board - R. Jacob Hernandez, Alan K. LePera, Technical Studies
Description: This dataset represents the spatially distributed over the Cimarron River alluvium and terrace aquifer estimated using a modified Thornthwaite-Mather soil-water balance (SWB) code developed by Westenbroek and others (2010). The period of record used in the anlaysis was 1960-2016. Estimated mean annual recharge for the full period of record was 2.6 inches per year, which equates to 8.7 percent of mean annual precipitation across the study area (29.9 inches per year).
Definition Expression: N/A
Copyright Text: Oklahoma Water Resources Board - Alan K. LePera, Technical Studies.