Adams, Gregory P. Runkle, Donna Rea, Alan Becker, Carol J. 1997 1.0 map Open-File Report 96-448 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr96-448_aqbound This data set consists of digital aquifer boundaries for the alluvial and terrace deposits along the North Canadian River from Oklahoma City to Eufaula Lake in east-central Oklahoma. Ground water in 710 square miles of Quaternary alluvial and terrace deposits along the North Canadian River is an important source of water for irrigation, industrial, municipal, stock, and domestic supplies. The aquifer, composed of alluvial and terrace deposits, consists of sand, silt, clay, and gravel. The aquifer is underlain and in hydraulic connection with the upper zone of the Permian-age Garber-Wellington aquifer and the Pennsylvanian-age Ada-Vamoosa aquifer. The aquifer boundaries were digitized from a published ground-water modeling report and some lines were extracted from published digital geology data sets. 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 North Canadian River from Oklahoma City to Eufaula Lake in east-central Oklahoma. Ground water in 710 square miles of Quaternary alluvial and terrace deposits along the North Canadian River is an important source of water for irrigation, industrial, municipal, stock, and domestic supplies. The aquifer, composed of alluvial and terrace deposits, consists of sand, silt, clay, and gravel. The aquifer is underlain and in hydraulic connection with the upper zone of the Permian-age Garber-Wellington aquifer and the Pennsylvanian-age Ada-Vamoosa aquifer. Other Permian and Pennsylvanian-age rocks underlying the alluvial and terrace deposits have low permeabilities and are not in hydraulic connection with the alluvial and terrace aquifer (Havens, 1989). The aquifer boundaries were digitized from a ground-water modeling report published by the U.S. Geological Survey, "Geohydrology of the alluvial and terrace deposits of the North Canadian River from Oklahoma City to Eufaula Lake, central Oklahoma," by Havens (1989, plate 1). Some lines were extracted from digital geology data sets (Cederstrand, 1996a and 1996b) based on a scale of 1:250,000 because they represented more detailed aquifer boundaries and contain outcrops not shown by Havens (1989). 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., 1996a, Digital geologic map of Fort Smith quadrangle, east-central Oklahoma: U.S. Geological Survey Open-File Report 96-375, 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 Cederstrand, J.R., 1996b, Digital geologic map of Oklahoma City quadrangle, central Oklahoma: U.S. Geological Survey Open-File Report 96-378, 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 Environmental Systems Research Institute, Inc. (ESRI), 1995, ARC/INFO Command Reference, ARC/INFO On-line manuals: Redlands, CA. Havens, J.S., 1989, Geohydrology of the alluvial and terrace deposits of the North Canadian River from Oklahoma City to Eufaula Lake, central Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 88-4234, 32 p., 12 pl. 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. 1989 publication date Complete None planned -97.7581 -95.6617 35.6147 35.0633 none ground-water vulnerability groundwater vulnerability aquifers ground water groundwater North Canadian alluvial and terrace aquifer alluvial and terrace aquifer terrace aquifer alluvial aquifer terrace alluvium aquifer boundary inlandWaters none east-central Oklahoma None. Features representing aquifer boundaries as reported by Havens (1989) were extracted from digital surficial geology data sets by Cederstrand (1996a, 1996b) based on a scale of 1:250,000. Aquifer boundaries represented at these scales 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?OFR96-448/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 96-378 Oklahoma City, OK U.S. Geological Survey http://wwwok.cr.usgs.gov/gis/geology/index.html Cederstrand, Joel R. 1996 1.0 map Open-File Report 96-375 Oklahoma City, OK U.S. Geological Survey http://wwwok.cr.usgs.gov/gis/geology/index.html Polygon and chain-node topology present. This data set includes the aquifer boundaries published on plate 1 by Havens (1989) and some lines from published digital geology data sets by Cederstrand (1996a, 1996b). Aquifer boundaries with a value of 1 for the LSOURCE line attribute were taken from Havens (1989). Aquifer boundaries with a value of 2 for the LSOURCE line attribute were taken from Cederstrand (1996a, 1996b). The aquifer boundaries from Cederstrand (1996a, 1996b) are more detailed and contain outcrops not shown by Havens (1989). None 64 meters Resolution as reported None. Lines representing aquifer boundaries were extracted from digital geology data sets using the ARC/INFO GET command. 1996 The ARC/INFO CLEAN command (ESRI, 1995) was used with a dangle length of 0.0 feet or meters and fuzzy tolerance of 32.8 feet (10.0 meters). 1996 A comparison of a paper plot of the data set with the source mylar-base map showed that the source map was published at a scale of 1:251,400 and not 1:250,000. 1996 The data were edited to delete extraneous pseudo and dangle nodes. The ARC/INFO CLEAN command (ESRI, 1995) was used with a dangle length of 0.0 feet or meters and fuzzy tolerance of 32.8 feet (10.0 meters). 1996 Lines were attributed for LSOURCE and polygons were attributed for AQTYPE. Verification of attribute codes was made by comparing a paper plot of the data set with the source map. 1996 Vector Point 25 String 43 GT-polygon composed of chains 26 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 Havens (1989) 1,2 n/a n/a MAJOR1 Aquifer type Havens (1989) 1,2 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 Cederstrand (1996a, 1996b), Havens (1989) 1,2 n/a n/a MAJOR1 Source of line Cederstrand (1996a, 1996b), Havens (1989) 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 that represents areas where the aquifer is present, and 2 that represents areas where the aquifer is absent or areas not considered part of the aquifer. 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 from Havens (1989) and an LSOURCE code of 2 indicates the line was extracted from Cederstrand (1996a, 1996b). 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+ofr96-448_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/ofr96-448_aqbound.e00.gz Other DLG file format zipped 1 http://water.usgs.gov/GIS/dsdl/ofr96-448_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+ofr96-448_aqbound FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998