Adams, Gregory P. Runkle, Donna Rea, Alan Cederstrand, Joel. R. 1997 Unknown 1.0 map Open-File Report 96-445 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?ofr96-445_recharg This data set consists of digital polygons of a constant recharge rate for the alluvial and terrace deposits along the Cimarron River from Freedom to Guthrie in northwestern Oklahoma. Ground water in 1,305 square miles of Quaternary-age alluvial and terrace deposits along the the Cimarron River from Freedom to Guthrie is an important source of water for irrigation, industrial, municipal, stock, and domestic supplies. Alluvial and terrace deposits are composed of interfingering lenses of clay, sandy clay, and cross-bedded poorly sorted sand and gravel. The aquifer is composed of hydraulically connected alluvial and terrace deposits that unconformably overlie the Permian-age Formations. A recharge value of 2.3 inches per year is used in this report for the alluvial and terrace deposits along the the Cimarron River from Freedom to Guthrie Oklahoma. The recharge rate was estimated using a base-flow method and verified in a steady-state flow model. The polygon boundaries and the value for constant recharge for alluvial and terrace deposits used in this data set were published in a steady-state ground-water flow modeling report. The aquifer boundaries along geological contacts were extracted from published digital geology data sets. Additional boundaries defining the geographic limits of the aquifer and areas of less than 5 feet saturated thickness were digitized from a mylar map, at a scale of 1:250,000. The maps were published at a scale of 1:900,000. 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 set that could be used in ground-water vulnerability analysis. Introduction -- This data set consists of digital polygons of a constant recharge rate for the alluvial and terrace deposits along the Cimarron River from Freedom to Guthrie in northwestern Oklahoma. Ground water in 1,305 square miles of Quaternary-age alluvial and terrace deposits along the the Cimarron River from Freedom to Guthrie is an important source of water for irrigation, industrial, municipal, stock, and domestic supplies. Alluvial and terrace deposits are composed of interfingering lenses of clay, sandy clay, and cross-bedded poorly sorted sand and gravel. The aquifer is composed of hydraulically connected alluvial and terrace deposits that unconformably overlie the Permian-age Formations (Adams and Bergman 1996). A recharge value of 2.3 inches per year is used in this report for the alluvial and terrace deposits along the the Cimarron River from Freedom to Guthrie, Oklahoma. The recharge is approximately 8 percent of the 27 inches per year mean average annual precipitation for the study area and was estimated by Adams and Bergman (1996) using a base-flow method and was verified in the steady-state flow model. The 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 2.3 inches per year was multiplied by 100 and stored in the digital data sets as 230 in hundredths of an inch per year. The polygon boundaries and the value for constant recharge were determined from the U.S. Geological Survey publication, "Geohydrology of alluvium and terrace deposits of the Cimarron River from Freedom to Guthrie, Oklahoma," by Adams and Bergman (1996, fig. 5 and p. 23). The aquifer boundaries along geological contacts were extracted from digital geology data sets by Cederstrand (1996a, 1996b, 1996c, 1996d). Additional boundaries defining the geographic limits of the aquifer and areas of less than 5 feet saturated thickness were digitized from a mylar map, at a scale of 1:250,000. The maps were published at a scale of 1:900,000 (Adams and Bergman, 1996). 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 -- Adams, G.P., and Bergman, D.L., 1996, Geohydrology of alluvium and terrace deposits of the Cimarron River from Freedom to Guthrie, Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 95-4066, 57 p. Cederstrand, J.R., 1996a, Digital geologic map of Clinton quadrangle, west-central Oklahoma: U.S. Geological Survey Open-File Report 96-373, 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 Enid quadrangle, north-central Oklahoma: U.S. Geological Survey Open-File Report 96-374, based on a scale 1:250,000, 4 diskettes. (Available in nonproprietary and ARC/INFO formats.) URL:http://wwwok.cr.usgs.gov/gis/geology/index.html Cederstrand, J.R., 1996c, 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 Cederstrand, J.R., 1996d, Digital geologic map of Woodward quadrangle, northwest Oklahoma: U.S. Geological Survey Open-File Report 96-381, based on a scale 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. 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. 1996 publication date Complete None planned -99.0874 -97.5243 36.8974 35.7774 none ground-water vulnerability groundwater vulnerability aquifers ground water groundwater Cimarron alluvial and terrace aquifer Cimarron River alluvial and terrace aquifer Cimarron River terrace aquifer Cimarron River aquifer Cimarron River alluvial aquifer Cimarron alluvial aquifer Cimarron aquifer terrace aquifer alluvial aquifer recharge recharge rate ground-water recharge inlandWaters none northwest Oklahoma None. Lines representing geological contacts were extracted from digital geology data sets (Cederstrand, 1996a, 1996b, 1996c, 1996d) based on a scale of 1:250,000. Lines representing the geographic limits of the aquifer were digitized from a mylar map (33 inches by 31 inches), at a scale of 1:250,000. Hydraulic conductivity polygons represented at these scales are indicative of broad, regional trends and should not be interpreted as site specific. The hydraulic conductivity polygons that were digitized from a mylar map had a maximum root-mean-squared-error (RMSE) of 0.008 map inches (0.020 map centimeters) or 167.49 feet (51.05 meters) ground distance. 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 http://water.usgs.gov/lookup/get?OFR96-445/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 96-373 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 96-374 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 96-378 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 96-381 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 areas of the specified recharge rate published on page 23 for the Cimarron alluvial and terrace deposits published on figure 5, page 10 by Adams and Bergman (1996). Lines with a value of 1 for the LSOURCE line attribute were taken from Adams and Bergman (1996) and lines with a value of 2 for the LSOURCE line attribute were taken from Cederstrand (1996a, 1996b, 1996c, 1996d). None 64 meters Resolution as reported None. The features for aquifer boundaries along geological contacts were extracted from Cederstrand (1996a, 1996b, 1996c, 1996d) 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 with a dangle length of 0.0 feet or meters and fuzzy tolerance of 3.3 feet (1.0 meters). The ARC/INFO PROJECT command (ESRI, 1995) was used to convert the extracted features data set projection from Albers Conical Equal Area to Universal Transverse Mercator-Zone 14. 1996 Boundaries defining the geographic limits of the aquifer and areas of less than 5 feet saturated thickness were digitized from a mylar map, at a scale of 1:250,000. The mylar map was based on Transverse Mercator projection, with central meridians of 99 and 97 degrees west longitude. Registration tics were located on the report data set and the mylar map at locations of township and range corners, to allow registration of the digitized data set and mylar map. The four registration tics were projected into Universal Transverse Mercator-Zone 14, which was the projection used for manual digitizing. The aquifer boundaries were digitized in three sessions with a maximum root-mean-squared-error (RMSE) of 0.008 inches (0.020 centimeters) map distance or 167.49 feet (51.05 meters) ground distance. The data set was edited to delete extraneous pseudo and dangle nodes. 1996 The registration tics used in the initial digitizing were township and range corners taken from 1:24,000-scale topographic maps. A comparison of a paper copy of the digital data set with the source map showed that the 1:24,000-scale township and range corners used as registration tics were not in the same locations on the 1:250,000-scale source map. To correct the problem, four 1:250,000-scale U.S. Geological Survey quadrangle maps were registered using latitudinal and longitudinal tics, with a maximum root-mean-squared-error (RMSE) of 0.003 inches (0.008 centimeters) map distance or 69.09 feet (21.06 meters) ground distance. Forty-four registration tics were selected and digitized from the quadrangle maps, 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 tics to more closely match the source map. The root-mean-squared-error (RMSE) for TRANSFORM was 189.3 feet (57.7 meters) ground distance. The ARC/INFO PROJECT command (ESRI, 1995) was used to convert the data set projection from Universal Transverse Mercator-Zone 14 to Transverse Mercator, with central meridians of 99 and 97 degrees west longitude. A comparison of this transformed data set to the pretransformed data set showed no difference in the digitized aquifer boundaries. 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 data set was changed from double to single precision with the ARC/INFO COPY (single) command (ESRI, 1995). The ARC/INFO CLEAN command (ESRI, 1995) was used to process the new polygon data set with a dangle length of 0.0 feet (0.0 meters) and fuzzy tolerance of 53.8 feet (16.4 meters). Polygons were attributed for AQTYPE and lines were attributed for LSOURCE. Verification of attribute codes were made by comparing a paper plot of the data set with the source map. Polygons were attributed for RECHARG and lines were attributed for LSOURCE. Verification of attribute codes were made by comparing a paper plot of the data set with the source map. 1996 Vector Point 19 String 31 GT-polygon composed of chains 20 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 hundredth of an inch per year Adams and Bergman (1996) 230, -99999 n/a n/a MAJOR1 Recharge, in hundredth of an inch per year Adams and Bergman (1996) 230, -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 Adams and Bergman (1996), Cederstrand (1996a,1996b,1996c,1996d) 1,2 n/a n/a MAJOR1 Source of line Adams and Bergman (1996), Cederstrand (1996a,1996b,1996c,1996d) 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 values of recharge expressed in hundredth of an inch per year. For example, the recharge value of 2.3 inches per year is stored as an R value of 230. A value of -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 Adams and Bergman (1996), and a LSOURCE code of 2 indicates the line was extracted from Cederstrand (1996a, 1996b, 1996c, 1996d). 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+ofr96-445_recharg 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/ofr96-445_recharg.e00.gz Other DLG file format zipped 1 http://water.usgs.gov/GIS/dsdl/ofr96-445_recharg.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+ofr96-445_recharg FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998