Runkle, Donna Rea, Alan Source data sets and supplemental information provided by Scott Christenson 1997 1.0 map Open-File Report 96-454 Reston, VA U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?ofr96-454_recharg This data set consists of digitized polygons of a constant recharge value for the Central Oklahoma aquifer in central Oklahoma. This area encompasses all or part of Cleveland, Lincoln, Logan, Oklahoma, Payne, and Pottawatomie Counties. The Central Oklahoma aquifer includes the alluvial and terrace deposits along major streams, the Garber Sandstone and Wellington Formations, and the Chase, Council Grove, and Admire Groups. The Quaternary-age alluvial and terrace deposits consist of unconsolidated clay, silt, sand, and gravel. The Permian-age Garber Sandstone and Wellington Formations consist of sandstone with interbedded siltstone and mudstone. The Permian-age Chase, Council Grove, and Admire Groups consist of sandstone, shale, and thin limestone. The recharge data set was created from digital data sets developed to produce a map for a previously published report. Most of the recharge to the Central Oklahoma aquifer is infiltration of precipitation through outcrops of the Garber Sandstone and Wellington Formations, the Chase, Council Grove, and Admire Groups, and the alluvial and terrace deposits. The median recharge to the aquifer is 1.61 inches per year. This data set was created for a project to develop data sets to support ground-water vulnerability analysis. The objective was to create and document a digital geospatial data set from a published report or map, or existing digital geospatial data set that could be used in ground-water vulnerability analysis. Introduction -- This data set consists of digitized polygons of constant recharge values for the Central Oklahoma aquifer in central Oklahoma. This area encompasses all or part of Cleveland, Lincoln, Logan, Oklahoma, Payne, and Pottawatomie Counties. The Central Oklahoma aquifer includes the alluvial and terrace deposits along major streams, the Garber Sandstone and Wellington Formations, and the Chase, Council Grove, and Admire Groups, as described in the report, "Ground-water-quality assessment of the Central Oklahoma aquifer, Oklahoma: Geochemical and Geohydrologic Investigations," by Parkhurst, Christenson, and Breit (1996). The Quaternary-age alluvial and terrace deposits consist of unconsolidated clay, silt, sand, and gravel. The Permian-age Garber Sandstone and Wellington Formations consist of sandstone with interbedded siltstone and mudstone. The Permian-age Chase, Council Grove, and Admire Groups consist of sandstone, shale, and thin limestone (Parkhurst, Christenson, and Breit, 1996). The Central Oklahoma aquifer underlies about 3,000 square miles of central Oklahoma where the aquifer is used extensively for municipal, industrial, commercial, and domestic water supplies. Most of the usable ground water within the aquifer is from the Garber Sandstone and Wellington Formations. Substantial quantities of usable ground water also are present in the Chase, Council Grove, and Admire Groups, and in alluvial and terrace deposits associated with the major streams (Parkhurst, Christenson, and Breit, 1996). The recharge data set was created from digital data sets developed to produce and publish maps at a scale of 1:250,000 in the report, "Hydrogeologic maps of the Central Oklahoma aquifer, Oklahoma," by Christenson, Morton, and Mesander (1992); and recharge values published in the report, "Ground-water-quality assessment of the Central Oklahoma aquifer, Oklahoma: Geochemical and Geohydrologic Investigations," by Parkhurst, Christenson, and Breit (1996). Most of the recharge to the Central Oklahoma aquifer is infiltration of precipitation through outcrops of the Garber Sandstone and Wellington Formations, the Chase, Council Grove, and Admire Groups, and the alluvial and terrace deposits (Parkhurst, Christenson, and Breit, 1996, p. C79). The median recharge to the aquifer is 1.61 inches per year (Parkhurst, Christenson, and Breit, 1996, p. C70-C74). Digital Line Graph (DLG) format requires numbers to be stored as integers. Therefore, the recharge rate of 1.61 inches per year was multiplied by 100 and stored in the digital data sets as 161 hundredths of an inch per year. The Chase, Council Grove, and Admire Groups are underlain by the Pennsylvanian-age Vanoss Formation. Recharge to the Vanoss Formation was not reported in Parkhurst, Christenson, and Breit (1996). The western third of the aquifer is overlain and confined by the Permian-age Hennessey Group rocks that consists of shales and mudstones with a few thin beds of very fine-grained sandstone. Recharge to the Hennessey Group was not reported in Parkhurst, Christenson, and Breit (1996). Reviews Applied to Data -- This electronic report was subjected to the same review standard that applies to all U.S. Geological Survey reports. Reviewers were asked to check the topological consistency, tolerances, attribute frequencies and statistics, projection, and geographic extent. Reviewers were given digital data sets and paper plots for checking against the source maps to verify the linework and attributes. The reviewers checked the metadata and a_readme.1st files for completeness and accuracy. Related Spatial and Tabular Data Sets -- This data set is one of four digital map data sets being published together for this aquifer. The four data sets are: > aqbound - aquifer boundaries > cond - hydraulic conductivity > recharg - aquifer recharge > wlelev - water-level elevation contours Digital map data sets of the Oklahoma surficial geology digitized from 1:250,000-scale maps (or 1:125,000-scale maps for the three Oklahoma panhandle counties) are published separately. Other_References_Cited: Christenson, S.C., Morton, R.B., and Mesander, B.A., 1992, Hydrogeologic maps of the Central Oklahoma aquifer, Oklahoma: U.S. Geological Survey Hydrologic Investigations Atlas HA-724, 3 sheets, scale 1:250,000 Environmental Systems Research Institute, Inc. (ESRI), 1995, ARC/INFO Command Reference, ARC/INFO On-line manuals: Redlands, CA. Parkhurst, D.L., Christenson, Scott, Breit, G.N., 1996, Ground-water-quality assessment of the Central Oklahoma aquifer, Oklahoma: Geochemical and geohydrologic investigations: U.S. Geological Water-Supply Paper 2357, 101 p. Notes -- Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. 1996 publication date Complete None planned -97.6620 -96.7706 36.0047 34.9005 USGS Thesaurus ground-water vulnerability groundwater vulnerability aquifers ground water groundwater Central Oklahoma aquifer Garber Sandstone Wellington Formation Chase Group Council Grove Group Admire Group recharge inlandWaters ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:6b47eb68-4d8e-4f40-8202-8acd985a3685 Geographic Names Information System central Oklahoma None. This data set represents the recharge rate to the Central Oklahoma aquifer described in Parkhurst, Christenson, and Breit (1996). The areas that show the recharge rate to the aquifer were digitized and published at a scale of 1:250,000 in the report by Christenson, Morton, and Mesander (1992). These areas represented at this scale are indicative of broad, regional trends and should not be interpreted as site specific. Donna L. Runkle U.S. Geological Survey Hydrologist mailing address

202 NW 66th St., Bldg. 7

Oklahoma City Oklahoma 73116 United States of America 1-888-275-8747 (405) 843-7712 dlrunkle@usgs.gov none https://water.usgs.gov/GIS/browse/ofr96-454.gif A browse image of the four aquifer data sets. GIF Compilation of this data set and the associated metadata was funded under a cooperative Joint Funding Agreement between the U.S. Geological Survey and the State of Oklahoma, Office of the Secretary of Environment. Public UNCLASSIFIED None Operating System-- UNIX, ARC/INFO Version 7.0.3,(Mon Mar 13 22:21:55 PST 1995) Polygon and chain-node topology present. This data set includes all areas of specified recharge published in a report by Parkhurst, Christenson, and Breit (1996). Boundaries with a value of 1 for the LSOURCE line attribute were taken from Christenson, Morton, and Mesander (1992). None 64 meters Resolution as reported None. The digital aquifer boundary data set in this report was copied from the digital data sets developed to produce the figures in Christenson, Morton, and Mesander (1992). Map projection information was not stored with the original data sets, therefore, the map projection information, Universal Transverse Mercator (UTM) project, zone 14, North American Datum of 1927 (NAD27) documented in Christenson, Morton, and Mesander (1992), was added using the ARC/INFO PROJECTDEFINE command (ESRI, 1995). The projection was later converted to the Albers Conical Equal Area, North American Datum of 1983 (NAD83) using the ARC/INFO PROJECT command (ESRI, 1995). 19970425 The data set was edited and dangling nodes were removed. The lines were attributed for LSOURCE and polygons were attributed for R. 19970515 The paper plot of the data set was compared to the published maps in Christenson, Morton, and Mesander (1992) to verify the location and labels of lines and polygons in the data set. 19970515 Vector Point 4 String 24 GT-polygon composed of chains 5 Albers Conical Equal Area 29.5 45.5 -96 23 0.0 0.0 coordinate pair 64 meters 64 meters METERS North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 RECHARG.PAT Attribute table of RECHARG. ARC/INFO - Attribute table of RECHARG. ARC/INFO - n/a n/a AREA Area of polygon in square coverage units Computed Positive real numbers n/a n/a PERIMETER Perimeter of polygon in coverage units Computed Positive real numbers n/a n/a RECHARG# Internal feature number Computed Sequential unique positive integer n/a n/a RECHARG-ID User-assigned feature number User-defined Integer n/a n/a R Recharge, in hundredths of an inch per year Parkhurst, Christenson, and Breit (1996) 161, -99999 n/a n/a MAJOR1 Recharge, in hundredths of an inch per year Parkhurst, Christenson, and Breit (1996) 161, -99999 n/a n/a MINOR1 Blank item for DLG Calculated 0 n/a n/a RECHARG.AAT Attribute table of RECHARG. ARC/INFO - Attribute table of RECHARG. ARC/INFO - n/a n/a FNODE# Internal number of from-node Computed Sequential unique positive integer n/a n/a TNODE# Internal number of to-node Computed Sequential unique positive integer n/a n/a LPOLY# Internal number of poly to left of arc Computed Sequential unique positive integer n/a n/a RPOLY# Internal number of poly to right of arc Computed Sequential unique positive integer n/a n/a LENGTH Length of arc in coverage units Computed Positive real numbers n/a n/a RECHARG# Internal feature number Computed Sequential unique positive integer n/a n/a RECHARG-ID User-assigned feature number User-defined Integer n/a n/a LSOURCE Source of line Christenson, Morton, and Mesander (1992) 1 n/a n/a MAJOR1 Source of line Christenson, Morton, and Mesander (1992) 1 n/a n/a MINOR1 Blank item for DLG Calculated 0 n/a n/a Each polygon in this data set has an associated attribute, R that contain a value of recharge (Parkhurst, Christenson, and Breit, 1996, p. C82) expressed in hundredths of an inch per year. The recharge value of 1.61 inches per year is stored as a R value of 161 in hundredths of an inch per year. Polygons in this data set that contain a R of -99999 represent areas where the recharge rate is not known. R is stored in the first major code (MAJOR1) and 0 is stored in the first minor code (MINOR1) for polygons in the Digital Line Graph (DLG) version of this data set. Each line in this digital data set has an associated attribute, LSOURCE that contains a code to indicate the source of the line. An LSOURCE code of 1 indicates the line was digitized from Christenson, Morton, and Mesander (1992). LSOURCE is stored in the first major code (MAJOR1) and 0 is stored in the first minor code (MINOR1) for lines in the DLG version of this data set. See overview. U.S. Geological Survey Michael Ierardi IT Specialist mailing

445 National Center

Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov Although this data set has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Export Full coverage zipped 1 https://water.usgs.gov/GIS/dsdl/ofr96-454_recharg.e00.gz Other DLG file format zipped 1 https://water.usgs.gov/GIS/dsdl/ofr96-454_recharg.dlg.gz None. This dataset is provided by USGS as a public service. 20201117 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing

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Reston VA 20192 1-888-275-8747 (1-888-ASK-USGS) mierardi@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998