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_aqbound This data set consists of digital aquifer boundaries for the alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake in northwestern Oklahoma. 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 aquifer boundaries established in a ground-water flow model for the aquifer include areas: 1) where the terrace deposits pinch out against relatively impermeable Permian-age formations; 2) where the alluvium has been deposited against relatively impermeable Permian-age formations; 3) where the alluvial and terrace deposits have been eroded and underlying Permian-age formations are exposed at the surface; 4) where the aquifer extends beyond the geographic limit of the study area; and 5) where the aquifer has little or no saturated thickness. The lines in the data set representing aquifer boundaries along geological contacts were extracted from a published digital surficial geology data set based on a scale of 1:250,000. The geographic limits of the aquifer and areas of little or no saturated thickness were digitized from a folded paper map, at a scale of 1:250,000 from a ground-water modeling report. 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 aquifer boundaries for the alluvial and terrace deposits along the Beaver-North Canadian River from the panhandle to Canton Lake in northwestern Oklahoma. 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 (Davis and Christenson, 1981). The aquifer boundaries established in a ground-water model report (Davis and Christenson, 1981) about the aquifer include areas: 1) where the terrace deposits pinch out against relatively impermeable Permian-age formations; 2) where the alluvium has been deposited against relatively impermeable Permian-age formations; 3) where the alluvial and terrace deposits have been eroded and underlying Permian-age formations are exposed at the surface; 4) where the aquifer extends beyond the geographic limit of the study area; and 5) where the aquifer has little or no saturated thickness. The lines in the data set representing aquifer boundaries along geological contacts were extracted from a published digital surficial geology data set (Cederstrand, 1996) based on a scale of 1:250,000. The geographic limits of the aquifer and areas of little or no saturated thickness were digitized from a folded paper map, at a scale of 1:250,000 from the ground-water modeling report, "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). 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 -- Cederstrand, J.R., 1996, Digital geologic map of Woodward quadrangle, northwest Oklahoma: U.S. Geological Survey Open-File Report 96-381, based on a scale of 1:250,000, 2 diskettes. (Available in nonproprietary and ARC/INFO formats.) URL:http://wwwok.cr.usgs.gov/gis/geology/index.html 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. 1981 publication date Complete None planned -99.9650 -98.5487 36.9727 36.0439 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 terrace deposit alluvium aquifer boundary inlandWaters none northwestern Oklahoma None. Features representing aquifer boundaries along geological contacts were extracted from a digital geology data set by Cederstrand (1996) based on a scale of 1:250,000. Boundaries defining the geographic limits of the aquifer and areas of little or no saturated thickness were digitized from a folded paper map (30 inches by 22 inches), at a scale of 1:250,000 (Davis and Christenson, 1981, plate 3). The digitized aquifer boundaries had 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. Boundaries 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?OFR96-446/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) Cederstrand, Joel R. 1996 1.0 map Open-File Report 96-381 Oklahoma City, OK U.S. Geological Survey http://wwwok.cr.usgs.gov/gis/geology/index.html Chain-node topology present. This data set includes the aquifer boundaries published on plate 3 by Davis and Christenson (1981). Aquifer boundaries with a value of 2 for the LSOURCE line attribute were taken from Cederstrand (1996). None 64 meters Resolution as reported None. The features representing aquifer boundaries along geological contacts were extracted from digital geology data sets using the ARC/INFO GET command (ESRI, 1995). The ARC/INFO CLEAN command (ESRI, 1995) was used to process the polygon data set using a dangle length of 0.0 feet or meters and fuzzy tolerance of 32.8 feet (10.0 meters). The ARC/INFO PROJECT command (ESRI, 1995) was used to convert the extracted data set projection from Albers Conical Equal Area to Universal Transverse Mercator-Zone 14. 1996 The geographic limits of the aquifer and areas of little or no saturation thickness were digitized from a folded paper map, at a scale of 1:250,000. 1996 Ten registration tics, located at township and range corners, were projected into Universal Transverse Mercator-Zone 14, which was the projection used for manual digitizing. The aquifer boundaries were digitized in two 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. 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 32.8 feet (10.0 meters) and fuzzy tolerance of 0.0 feet or 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 The ARC/INFO PROJECT command (ESRI, 1995) was used to convert the data set projection from Universal Transverse Mercator-Zone 14 to Albers Conical Equal Area. 1996 The ARC/INFO CLEAN command (ESRI, 1995) was used with a dangle length of 32.8 feet (10.0 meters) and fuzzy tolerance of 0.0 feet or meters. Polygons were attributed for AQTYPE and lines were attributed LSOURCE. Verification of attribute codes were made by comparing a paper plot of the data set with the source map. 1996 Vector Point 10 String 28 GT-polygon composed of chains 11 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 AQBOUND.PAT Polygon attribute table of AQBOUND ARC/INFO - Polygon attribute table of AQBOUND 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 AQBOUND# Internal feature number Computed Sequential unique positive integer n/a n/a AQBOUND-ID User-assigned feature number User-defined Integer n/a n/a AQTYPE Aquifer type Davis and Christenson (1981) 1,2,3 n/a n/a MAJOR1 Aquifer type Davis and Christenson (1981) 1,2,3 n/a n/a MINOR1 Blank item for DLG Calculated 0 n/a n/a AQBOUND.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 AQBOUND# Internal feature number Computed Sequential unique positive integer n/a n/a AQBOUND-ID User-assigned feature number User-defined Integer n/a n/a LSOURCE Source of line Davis and Christenson (1981), Cederstrand (1996) 1,2 n/a n/a MAJOR1 Source of line Davis and Christenson (1981), Cederstrand (1996) 1,2 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, AQTYPE, with values of 1 representing areas where the aquifer is present, 2 representing areas where the aquifer is absent or areas not considered part of the aquifer, and 3 representing areas where the aquifer was too thin (little or no saturated thickness) for modelng ground-water flow (Davis and Christenson, 1981). AQTYPE is stored in the first major code (MAJOR1) for polygons, and 0 is stored in the first minor code (MINOR1) 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 line source. An LSOURCE code of 1 indicates the line was digitized from Davis and Christenson (1981), and an LSOURCE code of 2 indicates the line was extracted from Cederstrand (1996). LSOURCE is stored in the first major code (MAJOR1) for lines, and 0 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_aqbound 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_aqbound.e00.gz Other DLG file format zipped 1 http://water.usgs.gov/GIS/dsdl/ofr96-446_aqbound.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_aqbound FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998