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 http://water.usgs.gov/lookup/getspatial?ofr96-454_wlelev This data set consists of digitized water-level elevation contours 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 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. The water-level elevation map was created from digital data sets developed to produce a map for a previously published report. Water-levels measured in wells during the winter of 1986 and 1987 were used to construct the map. The digital data set contains water-level elevations that range from 850 to 1,350 feet above sea level or the National Geodetic Vertical Datum of 1929 (NGVD29). 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 digitize water-level elevation contours 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 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 water-level elevation map was prepared and published at a scale of 1:250,000 as figure 2 on sheet 1 of the report, "Hydrogeologic maps of the Central Oklahoma aquifer, Oklahoma," by Christenson, Morton, and Mesander (1992) from water-levels measured in wells during the winter of 1986 and 1987. The digital water-level elevation data set in this report was created from the digital data sets developed to produce the maps in Christenson, Morton, and Mesander (1992). In this report, elevation refers to distance above sea level and sea level refers to the National Geodetic Vertical Datum of 1929 (NGVD29)--a geodetic datum derived from a general adjustment of the first-order level nets of both the United States and Canada, formerly called Sea Level Datum of 1929. The digital data set contains water-level elevations that range from 850 to 1,350 feet above sea level or NGVD29. 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 Douglas, D.H., and Peucker, T.K., 1973, Algorithm for the reduction of the number of points required to represent a digitized line or its caricature, Canadian Cartographer, 10, No. 2 (December 1973) 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. 1986 1987 ground condition Complete None planned -97.6624 -96.8013 35.9971 34.9183 none ground-water vulnerability groundwater vulnerability aquifers ground water groundwater Central Oklahoma aquifer Garber Sandstone Wellington Formation Chase Group Council Grove Group Admire Group ground-water levels groundwater levels water levels ground-water level elevation groundwater level elevation ground-water level elevation contours groundwater level elevation contours water-level elevation contours water level elevation contours water-level contours water level contours water-level elevation water level elevation inlandWaters none central Oklahoma None. This data set represents the water-level elevation contours that were created for and published at a scale of 1:250,000 in the report by Christenson, Morton, and Mesander (1992) from water-levels measured in wells during the winter of 1986 and 1987. Water-level elevation contours 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 http://water.usgs.gov/lookup/get?OFR96-454/browse.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) Chain-node topology present. This data set includes all the water-level elevation contours published on figure 2, sheet 1, in a report by 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 ELEV and LTYPE. 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 in the data set. 19970515 The data set was documented using ARC/INFO DOCUMENT.AML (ESRI, 1995). 19970515 The ARC/INFO GENERALIZE command (Douglas and Peucker, 1973) with a weed tolerance of 64 meters to reduce the number of vertices representing the water-level elevation contours. The reduction of vertices decreased the size of the ARC/INFO data set to 5 percent of its original size. The generalized coverage was compared with the original coverage on the computer screen to verify that the location and shape of the lines remained the same. A paper plot of the data set also was compared to the published maps in Christenson, Morton, and Mesander (1992) to verify the location and shape of lines remained the same. 19970527 Vector Point String 110 GT-polygon composed of chains 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 WLELEV.AAT Attribute table of WLELEV. ARC/INFO - Attribute table of WLELEV. 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 WLELEV# Internal feature number Computed Sequential unique positive integer n/a n/a WLELEV-ID User-assigned feature number User-defined Integer n/a n/a ELEV Water-level contour elevation in feet above NGVD29 Christenson, Morton, and Mesander (1992) 850 1,350 LTYPE Line type Christenson, Morton, and Mesander (1992) 1 n/a n/a MAJOR1 Water-level contour elevation in feet above NGVD29 Christenson, Morton, and Mesander (1992) 850 1,350 MINOR1 Line type Christenson, Morton, and Mesander (1992) 1 n/a n/a Two attributes are associated with each line in this digital data set. The first attribute, ELEV, contains the elevation of the water-level contour, expressed in feet above the National Geodetic Vertical Datum of 1929 (NGVD29). The second attribute, LTYPE, contains a code that indicates the line is solid on the source map. ELEV is stored in the first major code (MAJOR1) and LTYPE is stored in the first minor code (MINOR1) for lines in the Digital Line Graph (DLG) version of this data set. See overview. 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) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ofr96-454_wlelev 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 http://water.usgs.gov/GIS/dsdl/ofr96-454_wlelev.e00.gz Other DLG file format zipped 1 http://water.usgs.gov/GIS/dsdl/ofr96-454_wlelev.dlg.gz None. This dataset is provided by USGS as a public service. 20041108 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) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+ofr96-454_wlelev FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998