Adams, Gregory P. Runkle, Donna Rea, Alan 1997 1.0 map Open-File Report 96-446 Reston, VA U.S. Geological Survey https://water.usgs.gov/lookup/getspatial?ofr96-446_recharg This data set consists of digital polygons of a constant recharge value 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. A recharge rate of 1 inch per year was estimated in the ground-water modeling report for the alluvial and terrace deposits and used in this data set. The recharge rate was estimated using a base-flow method and a monthly-water-balance method. The features in the data set representing 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 were digitized from a folded paper map, at a scale of 1:250,000 in the ground-water modeling report. Ground-water flow models are numerical representations that simplify and aggregate natural systems. Models are not unique; different combinations of aquifer characteristics may produce similar results. Therefore, values of recharge used in the model and presented in this data set are not precise, but are within a reasonable range when compared to independently collected data. 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 polygons of a constant recharge value 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). A recharge rate of 1 inch per year was estimated in the ground-water modeling report for the alluvial and terrace deposits and used in this data set. The recharge rate was This recharge rate was estimated by Davis and Christenson (1981, page 29) using a base-flow method and a monthly-water-balance method described by Thornthwaite (1948). The estimated recharge value is uniform throughout the 830 square mile study area along the Beaver-North Canadian River from the panhandle to Canton Lake, Oklahoma. Digital Line Graph (DLG) format requires numbers to be stored as integers. Therefore, the recharge in inches per year was multiplied by 100 and stored in the digital data sets as hundredths of inches per year. For example 1.0 inches per year was multiplied by 100 and stored in the digital data sets as 100 in hundredths of an inch per year. 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. Additional boundaries defining the the geographic limits of the aquifer 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 alluvial and terrace aquifer along the Beaver-North Canadian River from the the panhandle to Canton Lake, northwestern Oklahoma," by Davis and Christenson (1981, plate 3). Ground-water flow models are numerical representations that simplify and aggregate natural systems. Models are not unique; different combinations of aquifer characteristics may produce similar results. The hydraulic conductivity and recharge are closely interrelated. As long as these two model inputs are in balance the model has a small mean residual; it represents the natural system numerically. If the hydraulic conductivity is accurately known, the model can be used to accurately determine recharge. Likewise, if the hydraulic conductivity is poorly known, then the recharge will be poorly determined. Therefore, values of recharge used in the model and presented in this data set are not precise, but are within a reasonable range when compared to independently collected data. Recharge probably varies considerably over the local area, and model recharge is at best an average over an area at least as large as the model grid (and probably much larger than a single cell). 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. Thornthwaite, C.W., 1948, An approach toward a rational classification of climate: The Geographical review, vol. 38, no. 1, p.55-94. 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 USGS Thesaurus 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 terrace deposit alluvial aquifer terrace alluvium ground-water recharge recharge recharge rate inlandWaters ISO 19115 Topic Category geoscientificInformation inlandWaters environment USGS Metadata Identifier USGS:95e20cc4-52ef-46f5-8065-fca5055def34 Geographic Names Information System northwestern Oklahoma None. Features representing geologic contacts were extracted from the digital surficial geology data set by Cederstrand (1996), based on a scale of 1:250,000. Lines defining the geographic limits of the aquifer were digitized from a folded paper map (30 inches by 22 inches), at a scale of 1:250,000, from Davis and Christenson (1981). The maximum root-mean-square-error (RMSE) was 0.017 map inches (0.043 map centimeters) or 354.0 feet (107.90 meters) ground distance. Recharge polygons represented at these scales are indicative of broad, regional trends and should not be interpreted as site specific. Ground-water flow models are numerical representations that simplify and aggregate natural systems. Models are not unique; different combinations of aquifer characteristics may produce similar results. The hydraulic conductivity and recharge are closely interrelated. As long as these two model inputs are in balance the model has a small mean residual; it represents the natural system numerically. If the hydraulic conductivity is accurately known, the model can be used to accurately determine recharge. Likewise, if the hydraulic conductivity is poorly known, then the recharge will be poorly determined. Therefore, values of recharge used in the model and presented in this data set are not precise, but are within a reasonable range when compared to independently collected data. Recharge probably varies considerably over the local area, and model recharge is at best an average over an area at least as large as the model grid (and probably much larger than a single cell). 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/ofr96-446.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 Polygon and chain-node topology present. This data set includes all the areas of specified recharge rate published on page 29 from Davis and Christenson (1981). Lines with a value of 2 for the line attribute LSOURCE were taken from Cederstrand (1996). None 64 meters Resolution as reported None. The features representing geological contacts were extracted 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 Ten registration tics were located on the data set and the source map at township and range corners. The registration tics were projected into Universal Transverse Mercator-Zone 14, which was the projection used for manual digitizing. The polygon 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. 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 (0.0 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 6 String 22 GT-polygon composed of chains 7 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 Polygon attribute table ARC/INFO - Polygon attribute table 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 Davis and Christenson (1981) 100, -99999 n/a n/a MAJOR1 Recharge, in hundredths of an inch per year Davis and Christenson (1981) 100, -99999 n/a n/a MINOR1 Blank item for DLG Calculated 0 n/a n/a RECHARG.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 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 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, R, containing a recharge value expressed in hundredths of an inch per year. The recharge value of 1.00 inch per year is stored as an R value of 100. The number -99999 indicates the recharge value is unknown. R 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. A 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 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/ofr96-446_recharg.e00.gz Other DLG file format zipped 1 https://water.usgs.gov/GIS/dsdl/ofr96-446_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

445 National Center

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