Adams, Gregory P. Runkle, Donna Rea, Alan 1997 1.0 map Open-File Report 96-446 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr96-446_wlelev This data set consists of digital water-level elevation contours for the Quaternary alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake in northwestern Oklahoma in 1977 and 1978. 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. The water-level elevations measured in 1977 and 1978 ranged from 2,260 feet above sea level in the northwest to 1,620 feet above sea level in the southwest. The water-level elevation contours were digitized from a folded paper map in a ground-water modeling report about the aquifer. The source map was published at a scale of 1:250,000. 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 sets that could be used in ground-water vulnerability analysis. Introduction -- This data set consists of digital water-level elevation contours for the Quaternary alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake in northwestern Oklahoma in 1977 and 1978. Ground water in 830 square miles of 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 (Davis and Christenson, 1981). In this report, elevation refers to distance above sea level and sea level refers to the National Gedodetic 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 water-level elevations measured in 1977 and 1978 ranged from 2,260 feet above sea level in the northwest to 1,620 feet above sea level in the southwest. Regional ground-water flow is generally southwest towards the Beaver-North Canadian River. An exception is in the northwest part of the aquifer where ground-water flow direction is northeast because of downward leakage into the Permian formations. The contour interval is 20 feet (Davis and Christenson, 1981). The water-level elevation contours were digitized from a folded paper map in the U.S. Geological Survey publication, "Geohydrology and numerical simulation of the alluvium and terrace aquifer along the Beaver-North Canadian River from the Panhandle to Canton Lake, northwestern Oklahoma," by Davis and Christenson (1981, plate 3). The source map was published at a scale of 1:250,000. 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 -- Davis, R.E. and Christenson, S.C., 1981, Geohydrology and numerical simulation of the alluvium and terrace aquifer along the Beaver-North Canadian River from the Panhandle to Canton Lake, northwestern Oklahoma: U.S. Geological Survey Open-file Report 81-483, 42 p., 15 pl. Environmental Systems Research Institute, Inc. (ESRI), 1995, ARC/INFO Command Reference, ARC/INFO On-line manuals: Redlands, CA. 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. 1977 1978 ground conditions in 1977 and 1978 Complete None planned -99.9618 -98.5557 36.9620 36.0659 none ground-water vulnerability groundwater vulnerability aquifers ground water groundwater North Canadian River alluvial and terrace aquifer North Canadian alluvial and terrace aquifer Beaver River alluvial and terrace aquifer Beaver alluvial and terrace aquifer alluvial and terrace aquifer terrace aquifer alluvial aquifer terrace alluvium 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 northwestern Oklahoma None. The source map from which this data set was digitized was published at a scale of 1:250,000, and represents the elevation of the water levels in the alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake Oklahoma, in 1977-78 (Davis and Christenson, 1981, plate 3). Water levels represented at this scale are indicative of broad, regional trends and should not be interpreted as site specific. The contours were digitized from a folded paper map (30 inches by 22 inches), with a maximum registration root-mean-squared-error (RMSE) of 0.017 map inches (0.043 map centimeters) or 354.0 feet (107.90 meters) ground distance. 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?OFR96-446/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 the water-level contours published on plate 3 by Davis and Christenson (1981). None 100 meters Resolution as reported None. The water-level contours were digitized in three sessions with a maximum registration root-mean-squared error (RMSE) of 0.017 inches (0.043 centimeters) map distance or 354.0 feet (107.90 meters) ground distance. Universal Transverse Mercator-Zone 14 was the projection used for digitizing. 1996 The data set was edited to delete extraneous pseudo and dangle nodes. The ARC/INFO CLEAN command (ESRI, 1995), was used with a dangle length of 3,280.0 feet (1,000.0 meters) and fuzzy tolerance of 328.0 feet (100.0 meters). 1996 The registration tics used in the initial digitizing were township and range corners taken form 1:24,000-scale topographic maps. A comparison of a paper plot of the data set with the source map showed that the township and range corners were not in the same locations on the 1:250,000-scale source map. To correct the problem a 1:250,000-scale U.S. Geological Survey quadrangle map was registered using latitudinal and longitudinal registration tics, with a maximum root-mean-squared-error (RMSE) of 0.003 inches (0.007 centimeters) map distance or 72.97 feet (22.24 meters) ground distance. Ten registration tics were selected and digitized from the quadrangle map, and given the same tic identification numbers as the tics that were used initially. These new tics were used with the ARC/INFO TRANSFORM command (ESRI, 1995) to adjust the digitized lines to more closely match the source map. The registration root-mean-squared-error (RMSE) for TRANSFORM was 403.90 feet (123.11 meters) ground distance or 0.019 map inches (0.048 map centimeters). 1996 Attribute codes were added to the digitized water-level data set. Verification of attribute codes were made by comparing a paper plot of the data set with the source map. The ARC/INFO PROJECT command (ESRI, 1995) was used to convert the report data set projection from Universal Transverse Mercator-Zone 14 to Albers Conical Equal Area. 1996 Vector Point String 109 GT-polygon composed of chains Albers Conical Equal Area 29.5 45.5 -96 23 0.0 0.0 coordinate pair 100 meters 100 meters METERS North American Datum of 1983 Geodetic Reference System 80 6378137 298.257 WLELEV.AAT Arc attribute table ARC/INFO - Arc attribute table 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 polygon to left of arc Computed Sequential unique positive integer n/a n/a RPOLY# Internal number of polygon 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 Davis and Christenson (1981) 1,620 2,260 MAJOR1 Water-level contour elevation in feet above NGVD29 Davis and Christenson (1981) 1,620 2,260 LTYPE Line type Davis and Christenson (1981) 1,2 n/a n/a MINOR1 Line type Davis and Christenson (1981) 1,2 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 indicating the line is solid (1) or dashed (2) on the source map. ELEV is stored in the first major code (MAJOR1) for the line, and LTYPE is stored in the first minor code (MINOR1) 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+ofr96-446_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/ofr96-446_wlelev.e00.gz Other DLG file format zipped 1 http://water.usgs.gov/GIS/dsdl/ofr96-446_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+ofr96-446_wlelev FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998