Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unknown Title: Digital Orthophoto Quarter Quadrangles Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Online_Linkage: Description: Abstract: Orthophotos combine the image characteristics of a photograph with the geometric qualities of a map. The primary digital orthophotoquad (DOQ) is a 1-meter ground resolution, quarter-quadrangle (3.75-minutes of latitude by 3.75-minutes of longitude) image cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum of 1983 (NAD83).The geographic extent of the DOQ is equivalent to a quarter-quad plus The overedge ranges a minimum of 50 meters to a maximum of 300 meters beyond the extremes of the primary and secondary corner points. The overedge is included to facilitate tonal matching for mosaicking and for the placement of the NAD83 and secondary datum corner ticks. The normal orientation of data is by lines (rows) and samples (columns). Each line contains a series of pixels ordered from west to east with the order of the lines from north to south. The standard, archived digital orthophoto is formatted as four ASCII header records, followed by a series of 8-bit binary image data records. The radiometric image brightness values are stored as 256 gray levels ranging from 0 to 255. The metadata provided in the digital orthophoto contain a wide range of descriptive information including format source information, production instrumentation and dates, and data to assist with displaying and georeferencing the image. The standard distribution format of DOQs from the USGS will be JPEG compressed images on CD-ROM by counties or special regions. The reconstituted image from the CD-ROM will exhibit some radiometric differences when compared to its uncompressed original but will retain the geometry of the uncompressed DOQ. Uncompressed DOQs are distributed on tape. Purpose: DOQ's serve a variety of purposes, from interim maps to field references for earth science investigations and analysis. The DOQ is useful as a layer of a geographic information system and as a tool for revision of digital line graphs and topographic maps. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 19940222 Ending_Date: present Currentness_Reference: ground condition Status: Progress: In work Maintenance_and_Update_Frequency: irregular Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -83.0 East_Bounding_Coordinate: -77.5 North_Bounding_Coordinate: 41.0 South_Bounding_Coordinate: 37.0 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: DOQ Theme_Keyword: DOQQ Theme_Keyword: digital orthophoto Theme_Keyword: digital orthophotoquad Theme_Keyword: digital image map Theme_Keyword: aerial photograph Theme_Keyword: rectified photograph Theme_Keyword: rectified image Theme_Keyword: orthophoto Theme_Keyword: quarter-quadrangle orthophoto Theme_Keyword: 3.75- x 3.75-minute orthophoto Place: Place_Keyword_Thesaurus: U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standard 10-3):Washington, D.C., National Institute of Standards and Technology. Place_Keyword: US Place_Keyword: WV Place_Keyword: West Virginia Place_Keyword: adolph ne quarter quad Place_Keyword: adolph nw quarter quad Place_Keyword: adolph se quarter quad Place_Keyword: adolph sw quarter quad Place_Keyword: adrian ne quarter quad Place_Keyword: adrian nw quarter quad Place_Keyword: adrian se quarter quad Place_Keyword: adrian sw quarter quad Place_Keyword: alderson ne quarter quad Place_Keyword: alderson nw quarter quad Place_Keyword: alderson se quarter quad Place_Keyword: alderson sw quarter quad Place_Keyword: alton ne quarter quad Place_Keyword: alton nw quarter quad Place_Keyword: alton se quarter quad Place_Keyword: alton sw quarter quad Place_Keyword: alum creek ne quarter quad Place_Keyword: alum creek nw quarter quad Place_Keyword: alum creek se quarter quad Place_Keyword: alum creek sw quarter quad Place_Keyword: amherstdale ne quarter quad Place_Keyword: amherstdale nw quarter quad Place_Keyword: amherstdale se quarter quad Place_Keyword: amherstdale sw quarter quad Place_Keyword: amonate ne quarter quad Place_Keyword: amonate nw quarter quad Place_Keyword: anawalt ne quarter quad Place_Keyword: anawalt nw quarter quad Place_Keyword: anawalt se quarter quad Place_Keyword: anawalt sw quarter quad Place_Keyword: ansted ne quarter quad Place_Keyword: ansted nw quarter quad Place_Keyword: ansted se quarter quad Place_Keyword: ansted sw quarter quad Place_Keyword: arnett ne quarter quad Place_Keyword: arnett nw quarter quad Place_Keyword: arnett se quarter quad Place_Keyword: arnett sw quarter quad Place_Keyword: artemas se quarter quad Place_Keyword: asbury ne quarter quad Place_Keyword: asbury nw quarter quad Place_Keyword: asbury se quarter quad Place_Keyword: asbury sw quarter quad Place_Keyword: athens ne quarter quad Place_Keyword: athens nw quarter quad Place_Keyword: athens se quarter quad Place_Keyword: athens sw quarter quad Place_Keyword: audra ne quarter quad Place_Keyword: audra nw quarter quad Place_Keyword: audra se quarter quad Place_Keyword: audra sw quarter quad Place_Keyword: augusta ne quarter quad Place_Keyword: augusta nw quarter quad Place_Keyword: augusta se quarter quad Place_Keyword: augusta sw quarter quad Place_Keyword: aurora ne quarter quad Place_Keyword: aurora nw quarter quad Place_Keyword: aurora se quarter quad Place_Keyword: aurora sw quarter quad Place_Keyword: baileysville ne quarter quad Place_Keyword: baileysville nw quarter quad Place_Keyword: baileysville se quarter quad Place_Keyword: baileysville sw quarter quad Place_Keyword: bancroft ne quarter quad Place_Keyword: bancroft nw quarter quad Place_Keyword: bancroft se quarter quad Place_Keyword: bancroft sw quarter quad Place_Keyword: barnabus ne quarter quad Place_Keyword: barnabus nw quarter quad Place_Keyword: barnabus se quarter quad Place_Keyword: barnabus sw quarter quad Place_Keyword: bastian nw quarter quad Place_Keyword: beckley ne quarter quad Place_Keyword: beckley nw quarter quad Place_Keyword: beckley se quarter quad Place_Keyword: beckley sw quarter quad Place_Keyword: beckwith ne quarter quad Place_Keyword: beckwith nw quarter quad Place_Keyword: beckwith se quarter quad Place_Keyword: beckwith sw quarter quad Place_Keyword: belington ne quarter quad Place_Keyword: belington nw quarter quad Place_Keyword: belington se quarter quad Place_Keyword: belington sw quarter quad Place_Keyword: belle ne quarter quad Place_Keyword: belle nw quarter quad Place_Keyword: belle se quarter quad Place_Keyword: belle sw quarter quad Place_Keyword: bellegrove se quarter quad Place_Keyword: bellegrove sw quarter quad Place_Keyword: belmont se quarter quad Place_Keyword: bens run ne quarter quad Place_Keyword: bens run nw quarter quad Place_Keyword: bens run se quarter quad Place_Keyword: bens run sw quarter quad Place_Keyword: bentree ne quarter quad Place_Keyword: bentree nw quarter quad Place_Keyword: bentree se quarter quad Place_Keyword: bentree sw quarter quad Place_Keyword: bergoo ne quarter quad 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Place_Keyword: big chimney sw quarter quad Place_Keyword: big creek ne quarter quad Place_Keyword: big creek nw quarter quad Place_Keyword: big creek se quarter quad Place_Keyword: big creek sw quarter quad Place_Keyword: big isaac ne quarter quad Place_Keyword: big isaac nw quarter quad Place_Keyword: big isaac se quarter quad Place_Keyword: big isaac sw quarter quad Place_Keyword: big pool nw quarter quad Place_Keyword: big pool se quarter quad Place_Keyword: big pool sw quarter quad Place_Keyword: big run ne quarter quad Place_Keyword: big run nw quarter quad Place_Keyword: big run se quarter quad Place_Keyword: big run sw quarter quad Place_Keyword: blackbirdknob ne quarter quad Place_Keyword: blackbirdknob nw quarter quad Place_Keyword: blackbirdknob se quarter quad Place_Keyword: blackbirdknob sw quarter quad Place_Keyword: blackwater falls ne quarter quad Place_Keyword: blackwater falls nw quarter quad Place_Keyword: blackwater falls se quarter quad Place_Keyword: blackwater falls sw quarter quad Place_Keyword: blue creek ne quarter quad Place_Keyword: blue creek nw quarter quad Place_Keyword: blue creek se quarter quad Place_Keyword: blue creek sw quarter quad Place_Keyword: bluefield ne quarter quad Place_Keyword: bluefield nw quarter quad Place_Keyword: bluefield se quarter quad Place_Keyword: bluefield sw quarter quad Place_Keyword: bowden ne quarter quad Place_Keyword: bowden nw quarter quad Place_Keyword: bowden se quarter quad Place_Keyword: bowden sw quarter quad Place_Keyword: bradshaw ne quarter quad Place_Keyword: bradshaw nw quarter quad Place_Keyword: bradshaw se quarter quad Place_Keyword: bradshaw sw quarter quad Place_Keyword: bramwell ne quarter quad Place_Keyword: bramwell nw quarter quad Place_Keyword: bramwell se quarter quad Place_Keyword: bramwell sw quarter quad Place_Keyword: branchland ne quarter quad Place_Keyword: branchland nw quarter quad Place_Keyword: branchland se quarter quad Place_Keyword: branchland sw quarter quad Place_Keyword: brownton ne quarter quad Place_Keyword: brownton nw quarter quad Place_Keyword: brownton se quarter quad Place_Keyword: brownton sw quarter quad Place_Keyword: bruceton mills ne quarter quad Place_Keyword: bruceton mills nw quarter quad Place_Keyword: bruceton mills se quarter quad Place_Keyword: bruceton mills sw quarter quad Place_Keyword: burlington ne quarter quad Place_Keyword: burlington nw quarter quad Place_Keyword: burlington se quarter quad Place_Keyword: burlington sw quarter quad Place_Keyword: businessburg ne quarter quad Place_Keyword: businessburg se quarter quad Place_Keyword: camden ne quarter quad Place_Keyword: camden nw quarter quad Place_Keyword: camden on gauley ne quarter quad Place_Keyword: camden on gauley nw quarter quad Place_Keyword: camden on gauley se quarter quad Place_Keyword: camden on gauley sw quarter quad Place_Keyword: camden se quarter quad Place_Keyword: camden sw quarter quad Place_Keyword: cameron nw quarter quad Place_Keyword: 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quarter quad Place_Keyword: chapmanville ne quarter quad Place_Keyword: chapmanville nw quarter quad Place_Keyword: chapmanville se quarter quad Place_Keyword: chapmanville sw quarter quad Place_Keyword: charles town ne quarter quad Place_Keyword: charles town nw quarter quad Place_Keyword: charles town sw quarter quad Place_Keyword: charleston east ne quarter quad Place_Keyword: charleston east nw quarter quad Place_Keyword: charleston east se quarter quad Place_Keyword: charleston east sw quarter quad Place_Keyword: charleston west ne quarter quad Place_Keyword: charleston west nw quarter quad Place_Keyword: charleston west se quarter quad Place_Keyword: charleston west sw quarter quad Place_Keyword: cherry run se quarter quad Place_Keyword: cherry run sw quarter quad Place_Keyword: clarksburg ne quarter quad Place_Keyword: clarksburg nw quarter quad Place_Keyword: clarksburg se quarter quad Place_Keyword: clarksburg sw quarter quad Place_Keyword: clay ne quarter quad Place_Keyword: 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quarter quad Place_Keyword: corliss nw quarter quad Place_Keyword: corliss se quarter quad Place_Keyword: corliss sw quarter quad Place_Keyword: cornstalk ne quarter quad Place_Keyword: cornstalk nw quarter quad Place_Keyword: cornstalk se quarter quad Place_Keyword: cornstalk sw quarter quad Place_Keyword: cowen ne quarter quad Place_Keyword: cowen nw quarter quad Place_Keyword: cowen se quarter quad Place_Keyword: cowen sw quarter quad Place_Keyword: crab orchard ne quarter quad Place_Keyword: crab orchard nw quarter quad Place_Keyword: crab orchard se quarter quad Place_Keyword: crab orchard sw quarter quad Place_Keyword: craigsville ne quarter quad Place_Keyword: craigsville nw quarter quad Place_Keyword: craigsville se quarter quad Place_Keyword: craigsville sw quarter quad Place_Keyword: cresaptown ne quarter quad Place_Keyword: cresaptown nw quarter quad Place_Keyword: cresaptown se quarter quad Place_Keyword: cresaptown sw quarter quad Place_Keyword: crumpler ne quarter quad Place_Keyword: crumpler nw quarter quad Place_Keyword: crumpler se quarter quad Place_Keyword: crumpler sw quarter quad Place_Keyword: cuzzart ne quarter quad Place_Keyword: cuzzart nw quarter quad Place_Keyword: cuzzart se quarter quad Place_Keyword: cuzzart sw quarter quad Place_Keyword: danese ne quarter quad Place_Keyword: danese nw quarter quad Place_Keyword: danese se quarter quad Place_Keyword: danese sw quarter quad Place_Keyword: davis ne quarter quad Place_Keyword: davis nw quarter quad Place_Keyword: davis se quarter quad Place_Keyword: davis sw quarter quad Place_Keyword: davy ne quarter quad Place_Keyword: davy nw quarter quad Place_Keyword: davy se quarter quad Place_Keyword: davy sw quarter quad Place_Keyword: dawson ne quarter quad Place_Keyword: dawson nw quarter quad Place_Keyword: dawson se quarter quad Place_Keyword: dawson sw quarter quad Place_Keyword: delbarton ne quarter quad Place_Keyword: delbarton nw quarter quad Place_Keyword: delbarton se quarter quad Place_Keyword: delbarton sw quarter quad Place_Keyword: diana ne quarter quad Place_Keyword: diana nw quarter quad Place_Keyword: diana se quarter quad Place_Keyword: diana sw quarter quad Place_Keyword: dorothy ne quarter quad Place_Keyword: dorothy nw quarter quad Place_Keyword: dorothy se quarter quad Place_Keyword: dorothy sw quarter quad Place_Keyword: duo ne quarter quad Place_Keyword: duo nw quarter quad Place_Keyword: duo se quarter quad Place_Keyword: duo sw quarter quad Place_Keyword: durbin ne quarter quad Place_Keyword: durbin nw quarter quad Place_Keyword: durbin se quarter quad Place_Keyword: durbin sw quarter quad Place_Keyword: east liverpool north se quarter quad Place_Keyword: east liverpool north sw quarter quad Place_Keyword: east liverpool south ne quarter quad Place_Keyword: east liverpool south nw quarter quad Place_Keyword: east liverpool south se quarter quad Place_Keyword: east liverpool south sw quarter quad Place_Keyword: eccles ne quarter quad Place_Keyword: eccles nw quarter quad Place_Keyword: eccles se quarter quad Place_Keyword: eccles sw quarter quad Place_Keyword: elkhurst ne quarter quad Place_Keyword: elkhurst nw quarter quad Place_Keyword: elkhurst se quarter quad Place_Keyword: elkhurst sw quarter quad Place_Keyword: elkins ne quarter quad Place_Keyword: elkins nw quarter quad Place_Keyword: elkins se quarter quad Place_Keyword: elkins sw quarter quad Place_Keyword: ellamore ne quarter quad Place_Keyword: ellamore nw quarter quad Place_Keyword: ellamore se quarter quad Place_Keyword: ellamore sw quarter quad Place_Keyword: erbacon ne quarter quad Place_Keyword: erbacon nw quarter quad Place_Keyword: erbacon se quarter quad Place_Keyword: erbacon sw quarter quad Place_Keyword: eskdale ne quarter quad Place_Keyword: eskdale nw quarter quad Place_Keyword: eskdale se quarter quad Place_Keyword: eskdale sw quarter quad Place_Keyword: fairmont east ne quarter quad Place_Keyword: fairmont east nw quarter quad Place_Keyword: fairmont east se quarter quad Place_Keyword: fairmont east sw quarter quad Place_Keyword: fairmont west ne quarter quad Place_Keyword: fairmont west nw quarter quad Place_Keyword: fairmont west se quarter quad Place_Keyword: fairmont west sw quarter quad Place_Keyword: fayetteville ne quarter quad Place_Keyword: fayetteville nw quarter quad Place_Keyword: fayetteville se quarter quad Place_Keyword: fayetteville sw quarter quad Place_Keyword: fellowsville ne quarter quad Place_Keyword: fellowsville nw quarter quad Place_Keyword: fellowsville se quarter quad Place_Keyword: fellowsville sw quarter quad Place_Keyword: flat top ne quarter quad Place_Keyword: flat top nw quarter quad Place_Keyword: flat top se quarter quad Place_Keyword: flat top sw quarter quad Place_Keyword: folsom ne quarter quad Place_Keyword: folsom nw quarter quad Place_Keyword: folsom se quarter quad Place_Keyword: folsom sw quarter quad Place_Keyword: fork mountain ne quarter quad Place_Keyword: fork 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nw quarter quad Place_Keyword: hancock se quarter quad Place_Keyword: hancock sw quarter quad Place_Keyword: hanging rock ne quarter quad Place_Keyword: hanging rock nw quarter quad Place_Keyword: hanging rock se quarter quad Place_Keyword: hanging rock sw quarter quad Place_Keyword: harman ne quarter quad Place_Keyword: harman nw quarter quad Place_Keyword: harman se quarter quad Place_Keyword: harman sw quarter quad Place_Keyword: harpers ferry nw quarter quad Place_Keyword: harpers ferry sw quarter quad Place_Keyword: headsville ne quarter quad Place_Keyword: headsville nw quarter quad Place_Keyword: headsville se quarter quad Place_Keyword: headsville sw quarter quad Place_Keyword: hedgesville sw quarter quad Place_Keyword: henlawson ne quarter quad Place_Keyword: henlawson nw quarter quad Place_Keyword: henlawson se quarter quad Place_Keyword: henlawson sw quarter quad Place_Keyword: herold ne quarter quad Place_Keyword: herold nw quarter quad Place_Keyword: herold se quarter quad Place_Keyword: herold sw quarter quad Place_Keyword: hightown ne quarter quad Place_Keyword: hightown nw quarter quad Place_Keyword: hightown sw quarter quad Place_Keyword: hillsboro ne quarter quad Place_Keyword: hillsboro nw quarter quad Place_Keyword: hillsboro se quarter quad Place_Keyword: hillsboro sw quarter quad Place_Keyword: hinton ne quarter quad Place_Keyword: hinton nw quarter quad Place_Keyword: hinton se quarter quad Place_Keyword: hinton sw quarter quad Place_Keyword: holden ne quarter quad Place_Keyword: holden nw quarter quad Place_Keyword: holden se quarter quad Place_Keyword: holden sw quarter quad Place_Keyword: hopeville ne quarter quad Place_Keyword: hopeville nw quarter quad Place_Keyword: hopeville se quarter quad Place_Keyword: hopeville sw quarter quad Place_Keyword: hundred se quarter quad Place_Keyword: hundred sw quarter quad Place_Keyword: iaeger ne quarter quad Place_Keyword: iaeger nw quarter quad Place_Keyword: iaeger se quarter quad Place_Keyword: 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quarter quad Place_Keyword: levels ne quarter quad Place_Keyword: levels nw quarter quad Place_Keyword: levels se quarter quad Place_Keyword: levels sw quarter quad Place_Keyword: lewisburg ne quarter quad Place_Keyword: lewisburg nw quarter quad Place_Keyword: lewisburg se quarter quad Place_Keyword: lewisburg sw quarter quad Place_Keyword: lindside ne quarter quad Place_Keyword: lindside nw quarter quad Place_Keyword: lindside se quarter quad Place_Keyword: lindside sw quarter quad Place_Keyword: little birch ne quarter quad Place_Keyword: little birch nw quarter quad Place_Keyword: little birch se quarter quad Place_Keyword: little birch sw quarter quad Place_Keyword: little hocking se quarter quad Place_Keyword: little hocking sw quarter quad Place_Keyword: littleton nw quarter quad Place_Keyword: littleton se quarter quad Place_Keyword: littleton sw quarter quad Place_Keyword: lobelia ne quarter quad Place_Keyword: lobelia nw quarter quad Place_Keyword: lobelia se quarter quad Place_Keyword: lobelia sw quarter quad Place_Keyword: logan ne quarter quad Place_Keyword: logan nw quarter quad Place_Keyword: logan se quarter quad Place_Keyword: logan sw quarter quad Place_Keyword: lorado ne quarter quad Place_Keyword: lorado nw quarter quad Place_Keyword: lorado se quarter quad Place_Keyword: lorado sw quarter quad Place_Keyword: lubeck ne quarter quad Place_Keyword: lubeck nw quarter quad Place_Keyword: lubeck se quarter quad Place_Keyword: lubeck sw quarter quad Place_Keyword: madison ne quarter quad Place_Keyword: madison nw quarter quad Place_Keyword: madison se quarter quad Place_Keyword: madison sw quarter quad Place_Keyword: majestic ne quarter quad Place_Keyword: majestic nw quarter quad Place_Keyword: majestic se quarter quad Place_Keyword: majestic sw quarter quad Place_Keyword: majorsville nw quarter quad Place_Keyword: majorsville sw quarter quad Place_Keyword: mallory ne quarter quad Place_Keyword: mallory nw quarter quad Place_Keyword: mallory se quarter quad Place_Keyword: mallory sw quarter quad Place_Keyword: mammoth ne quarter quad Place_Keyword: mammoth nw quarter quad Place_Keyword: mammoth se quarter quad Place_Keyword: mammoth sw quarter quad Place_Keyword: man ne quarter quad Place_Keyword: man nw quarter quad Place_Keyword: man se quarter quad Place_Keyword: man sw quarter quad Place_Keyword: marietta se quarter quad Place_Keyword: marietta sw quarter quad Place_Keyword: marlinton ne quarter quad Place_Keyword: marlinton nw quarter quad Place_Keyword: marlinton se quarter quad Place_Keyword: marlinton sw quarter quad Place_Keyword: martinsburg ne quarter quad Place_Keyword: martinsburg nw quarter quad Place_Keyword: martinsburg se quarter quad Place_Keyword: martinsburg sw quarter quad Place_Keyword: masontown ne quarter quad Place_Keyword: masontown nw quarter quad Place_Keyword: masontown se quarter quad Place_Keyword: masontown sw quarter quad Place_Keyword: matewan ne quarter quad Place_Keyword: matewan nw quarter quad Place_Keyword: matewan se quarter quad Place_Keyword: matheny ne quarter quad Place_Keyword: matheny nw quarter quad Place_Keyword: matheny se quarter quad Place_Keyword: matheny sw quarter quad Place_Keyword: matoka ne quarter quad Place_Keyword: matoka nw quarter quad Place_Keyword: matoka se quarter quad Place_Keyword: matoka sw quarter quad Place_Keyword: maysville se quarter quad Place_Keyword: maysville sw quarter quad Place_Keyword: mcgraws ne quarter quad Place_Keyword: mcgraws nw quarter quad Place_Keyword: mcgraws se quarter quad Place_Keyword: mcgraws sw quarter quad Place_Keyword: meadow bridge ne quarter quad Place_Keyword: meadow bridge nw quarter quad Place_Keyword: meadow bridge se quarter quad Place_Keyword: meadow bridge sw quarter quad Place_Keyword: meadow creek ne quarter quad Place_Keyword: meadow creek nw quarter quad Place_Keyword: meadow creek se quarter quad Place_Keyword: meadow creek sw quarter quad Place_Keyword: middleway ne quarter quad 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quarter quad Place_Keyword: oldtown sw quarter quad Place_Keyword: orlando ne quarter quad Place_Keyword: orlando nw quarter quad Place_Keyword: orlando se quarter quad Place_Keyword: orlando sw quarter quad Place_Keyword: paddy knob ne quarter quad Place_Keyword: paddy knob nw quarter quad Place_Keyword: paddy knob se quarter quad Place_Keyword: paddy knob sw quarter quad Place_Keyword: paden city ne quarter quad Place_Keyword: paden city nw quarter quad Place_Keyword: paden city se quarter quad Place_Keyword: paden city sw quarter quad Place_Keyword: panther ne quarter quad Place_Keyword: panther nw quarter quad Place_Keyword: panther se quarter quad Place_Keyword: panther sw quarter quad Place_Keyword: parkersburg ne quarter quad Place_Keyword: parkersburg nw quarter quad Place_Keyword: parkersburg se quarter quad Place_Keyword: parkersburg sw quarter quad Place_Keyword: parsons ne quarter quad Place_Keyword: parsons nw quarter quad Place_Keyword: parsons se quarter quad 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quad Place_Keyword: porters falls nw quarter quad Place_Keyword: porters falls se quarter quad Place_Keyword: porters falls sw quarter quad Place_Keyword: powellton ne quarter quad Place_Keyword: powellton nw quarter quad Place_Keyword: powellton se quarter quad Place_Keyword: powellton sw quarter quad Place_Keyword: powhatan point ne quarter quad Place_Keyword: powhatan point nw quarter quad Place_Keyword: powhatan point se quarter quad Place_Keyword: powhatan point sw quarter quad Place_Keyword: prince ne quarter quad Place_Keyword: prince nw quarter quad Place_Keyword: prince se quarter quad Place_Keyword: prince sw quarter quad Place_Keyword: princeton ne quarter quad Place_Keyword: princeton nw quarter quad Place_Keyword: princeton se quarter quad Place_Keyword: princeton sw quarter quad Place_Keyword: quick ne quarter quad Place_Keyword: quick nw quarter quad Place_Keyword: quick se quarter quad Place_Keyword: quick sw quarter quad Place_Keyword: quinwood ne quarter quad 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quad Place_Keyword: romney se quarter quad Place_Keyword: romney sw quarter quad Place_Keyword: ronceverte ne quarter quad Place_Keyword: rosemont ne quarter quad Place_Keyword: rosemont nw quarter quad Place_Keyword: rosemont se quarter quad Place_Keyword: rosemont sw quarter quad Place_Keyword: round bottom se quarter quad Place_Keyword: round hill ne quarter quad Place_Keyword: round hill nw quarter quad Place_Keyword: round hill se quarter quad Place_Keyword: roundhill nw quarter quad Place_Keyword: rowlesburg ne quarter quad Place_Keyword: rowlesburg nw quarter quad Place_Keyword: rowlesburg se quarter quad Place_Keyword: rowlesburg sw quarter quad Place_Keyword: rupert ne quarter quad Place_Keyword: rupert nw quarter quad Place_Keyword: rupert se quarter quad Place_Keyword: rupert sw quarter quad Place_Keyword: saint george ne quarter quad Place_Keyword: saint george nw quarter quad Place_Keyword: saint george se quarter quad Place_Keyword: saint george sw quarter quad 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Place_Keyword: sharp knob sw quarter quad Place_Keyword: shepherdstown ne quarter quad Place_Keyword: shepherdstown nw quarter quad Place_Keyword: shepherdstown se quarter quad Place_Keyword: shepherdstown sw quarter quad Place_Keyword: shinnston ne quarter quad Place_Keyword: shinnston nw quarter quad Place_Keyword: shinnston se quarter quad Place_Keyword: shinnston sw quarter quad Place_Keyword: sinks of gandy ne quarter quad Place_Keyword: sinks of gandy nw quarter quad Place_Keyword: sinks of gandy se quarter quad Place_Keyword: sinks of gandy sw quarter quad Place_Keyword: sissonville ne quarter quad Place_Keyword: sissonville nw quarter quad Place_Keyword: sissonville se quarter quad Place_Keyword: sissonville sw quarter quad Place_Keyword: skelt ne quarter quad Place_Keyword: skelt nw quarter quad Place_Keyword: skelt se quarter quad Place_Keyword: skelt sw quarter quad Place_Keyword: snyder knob ne quarter quad Place_Keyword: snyder knob nw quarter quad Place_Keyword: snyder 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quad Place_Keyword: summersville dam se quarter quad Place_Keyword: summersville dam sw quarter quad Place_Keyword: summersville ne quarter quad Place_Keyword: summersville nw quarter quad Place_Keyword: summersville se quarter quad Place_Keyword: summersville sw quarter quad Place_Keyword: sunrise ne quarter quad Place_Keyword: sunrise nw quarter quad Place_Keyword: sutton ne quarter quad Place_Keyword: sutton nw quarter quad Place_Keyword: sutton se quarter quad Place_Keyword: sutton sw quarter quad Place_Keyword: swandale ne quarter quad Place_Keyword: swandale nw quarter quad Place_Keyword: swandale se quarter quad Place_Keyword: swandale sw quarter quad Place_Keyword: sylvester ne quarter quad Place_Keyword: sylvester nw quarter quad Place_Keyword: sylvester se quarter quad Place_Keyword: sylvester sw quarter quad Place_Keyword: table rock nw quarter quad Place_Keyword: table rock se quarter quad Place_Keyword: table rock sw quarter quad Place_Keyword: tablers station ne quarter quad Place_Keyword: tablers station nw quarter quad Place_Keyword: tablers station se quarter quad Place_Keyword: tablers station sw quarter quad Place_Keyword: talcott ne quarter quad Place_Keyword: talcott nw quarter quad Place_Keyword: talcott se quarter quad Place_Keyword: talcott sw quarter quad Place_Keyword: tazwell ne quarter quad Place_Keyword: tazwell nw quarter quad Place_Keyword: terra alta ne quarter quad Place_Keyword: terra alta nw quarter quad Place_Keyword: terra alta se quarter quad Place_Keyword: terra alta sw quarter quad Place_Keyword: test quarter quad Place_Keyword: thornton ne quarter quad Place_Keyword: thornton nw quarter quad Place_Keyword: thornton se quarter quad Place_Keyword: thornton sw quarter quad Place_Keyword: thornwood ne quarter quad Place_Keyword: thornwood nw quarter quad Place_Keyword: thornwood se quarter quad Place_Keyword: thornwood sw quarter quad Place_Keyword: thurmond ne quarter quad Place_Keyword: thurmond nw quarter quad Place_Keyword: thurmond se quarter quad Place_Keyword: thurmond sw quarter quad Place_Keyword: tiltonsville ne quarter quad Place_Keyword: tiltonsville se quarter quad Place_Keyword: tiltonsville sw quarter quad Place_Keyword: tioga ne quarter quad Place_Keyword: tioga nw quarter quad Place_Keyword: tioga se quarter quad Place_Keyword: tioga sw quarter quad Place_Keyword: trace ne quarter quad Place_Keyword: trace nw quarter quad Place_Keyword: trace se quarter quad Place_Keyword: trace sw quarter quad Place_Keyword: trout ne quarter quad Place_Keyword: trout nw quarter quad Place_Keyword: trout se quarter quad Place_Keyword: trout sw quarter quad Place_Keyword: union ne quarter quad Place_Keyword: union nw quarter quad Place_Keyword: union se quarter quad Place_Keyword: union sw quarter quad Place_Keyword: upper tract ne quarter quad Place_Keyword: upper tract nw quarter quad Place_Keyword: upper tract se quarter quad Place_Keyword: upper tract sw quarter quad Place_Keyword: valley grove nw quarter 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quarter quad Place_Keyword: war sw quarter quad Place_Keyword: wardensville ne quarter quad Place_Keyword: wardensville nw quarter quad Place_Keyword: wardensville se quarter quad Place_Keyword: wardensville sw quarter quad Place_Keyword: webb ne quarter quad Place_Keyword: webb nw quarter quad Place_Keyword: webb se quarter quad Place_Keyword: webb sw quarter quad Place_Keyword: webster springs ne quarter quad Place_Keyword: webster springs nw quarter quad Place_Keyword: webster springs se quarter quad Place_Keyword: webster springs se ne quarter quad Place_Keyword: webster springs se nw quarter quad Place_Keyword: webster springs se se quarter quad Place_Keyword: webster springs se sw quarter quad Place_Keyword: webster springs sw quarter quad Place_Keyword: webster springs sw ne quarter quad Place_Keyword: webster springs sw nw quarter quad Place_Keyword: webster springs sw se quarter quad Place_Keyword: webster springs sw sw quarter quad Place_Keyword: weirton ne quarter quad 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Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: During photographic reproduction of the source photography, limited analog dodging is performed to improve image quality. Analog dodging consists of holding back light from certain areas of the sensitized photographic material to avoid overexposure. The diapositive is inspected to insure clarity and radiometric uniformity. Diapositive image brightness values are collected with a minimum of image quality manipulation. Image brightness values may deviate from brightness values of the original imagery due to image value interpolation during the scanning and rectification processes. Radiometry is verified by visual inspection of the digital orthophoto quadrangle with the original unrectified image to determine if the digital orthophoto has the same or better image quality as the original unrectified input image. Slight systematic radiometric differences can be detected between adjacent DOQ files due primarily to differences in source photography capture dates and sun angles of aerial photography along flight lines. These differences can be observed in an image's general lightness or darkness when compared to adjacent DOQ file coverages. Logical_Consistency_Report: All DOQ header data and image file sizes are validated by the Tape Validation System (TVS) software prior to archiving in the National Digital Cartographic Data Base (NDCDB). This validation procedure assures correct physical format and field values for header record elements. Logical relationships between header record elements are tested. Completeness_Report: All DOQ imagery is visually inspected for completeness to ensure that no gaps, or image misplacement exist in the 3.75' image area or in overedge coverage. DOQ images may be derived by mosaicking multiple images, in order to insure complete coverage. All DOQ's are cloud free within the 3.75' image area. Some clouds may, very infrequently, be encountered only in the overedge coverage. Source photography is leaf-off in deciduous vegetation regions. Void areas having a radiometric value of zero and appearing black may exist. These are areas for which no photographic source is available or result from image transformation from other planimetric systems to the Universal Transverse Mercator (UTM). In the latter case, the void sliver areas are on the outside edges of the overedge area. The data set field content of each DOQ header record element is validated to assure completeness prior to archiving in the NDCDB. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The DOQ horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. These inputs consist of the digital elevation model (DEM),aerotriangulation control and methods, the photo source camera calibration, scanner calibration, and aerial photographs that meet National Aerial Photography Program (NAPP) standards. The vertical accuracy of the verified USGS format DEM is equivalent to or better than a USGS level 1 or 2 DEM, with a root mean square error (RMSE) of no greater than 7.0 meters. Field control is acquired by third order class 1 or better survey methods sufficiently spaced to meet National Map Accuracy Staandards (NMAS) for 1:12,000-scale products. Aerial cameras have current certification from the USGS, National Mapping Division, Optical Science Laboratory. Test calibration scans are performed on all source photography scanners. Horizontal positional accuracy is determined by the Orthophoto Accuracy(ORACC) software program for DOQ data produced by the National Mapping Division. The program determines the accuracy by finding the line and sample coordinates of the passpoints in the DOQ and fitting these to their ground coordinates to develop a root mean square error (RMSE). From 4 to 9 points are checked. As a further accuracy test, the image line and sample coordinates of the DEM corners are transformed and compared with the actual X,Y DEM corner values to determine if they are within the RMSE. Additional information on this testing procedure can be found in U.S. Department of the Interior, U.S. Geological Survey, 1993, Technical Instructions, ORACC Users Manual (draft): Reston, VA. Adjacent DOQ's, when displayed together in a common planimetric coordinate system, may exhibit slight positional discrepancies across common DOQ boundaries. Linear features, such as streets, may not be continuous. These edge mismatches, however, still conform to positional horizontal accuracy within the NMAS. Field investigations to validate DOQ positional accuracy reliabilty are periodically conducted by the USGS, National Mapping Division, Geometronics Standards Section. DOQ's produced by cooperators and contractors use similarly approved RMSE test procedures. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished material Title: project ground and photo control Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Type_of_Source_Media: various media Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: various Ending_Date: various Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: CONTROL_INPUT Source_Contribution: Horizontal and vertical control used to establish positions and elevations for reference and correlation purposes. Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished material Title: report of calibration Geospatial_Data_Presentation_Form: remote-sensing image Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Type_of_Source_Media: disc, paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: various Ending_Date: various Source_Currentness_Reference: Date of the camera calibration associated with the source photography Source_Citation_Abbreviation: CAMERA_INPUT Source_Contribution: camera calibration parameters Process_Step: Process_Description: The production procedures, instrumentation, hardware and software used in the collection of standard USGS DOQ's vary depending on systems used at the contract, cooperator or USGS production sites. The majority of DOQ datasets are acquired through government contract. The process step describes, in general, the process used in the production of standard USGS DOQ data sets. The rectification process requires, as input, a user parameter file to control the rectification process, a digital elevation model (DEM1) gridded to user specified bounds, projection, zone, datum and X-Y units, a scanned digital image file (PHOTO1) covering the same area as the DEM, ground X-Y-Z point values (CONTROL_INPUT) and their conjugate photo coordinates in the camera coordinate system, and measurements of the fiducial marks (CAMERA_INPUT) in the digitized image. The camera calibration report (CAMERA_INPUT) provides the focal length of the camera and the distances in millimeters from the camera's optical center to the camera's 8 fiducial marks. These marks define the frame of reference for spatial measurements made from the photograph. Ground control points (CONTROL_INPUT) acquired from ground surveys or developed in aerotriangulation, are third order class 1 or better, and meet National Map Accuracy Standard (NMAS) for 1:12,000-scale. Ground control points are in the Universal Transverse Mercator or the State Plane Coordinate System on NAD83. Horizontal and vertical residuals of aerotriangulated tie-points are equal to or less than 2.5 meters. Standard aerotriangulation passpoint configuration consists of 9 ground control points, one near each corner, one at the center near each side and 1 near the center of the photograph, are used. The conjugate positions of the ground control points on the photograph are measured and recorded in camera coordinates. The raster image file (PHOTO_1) is created by scanning an aerial photograph film diapositive with a precision image scanner. An aperture of approximately 25 to 32 microns is used, with an aperture no greater than 32 microns permitted. Using 1:40,000-scale photographs, a 25-micron scan aperture equates to a ground resolution of 1-meter. The scanner converts the photographic image densities to gray scale values ranging from 0 to 255 for black and white photographs. Scan files with ground resolution less than 1 meter or greater than 1 meter but less than 1.28 meters are resampled to 1 meter. The principal elevation data source (DEM1) are standard DEM datasets from the National Digital Cartographic Data Base (NDCDB). DEM's that meet USGS standards are also produced by contractors to fulfill DOQ production requirements and are subsequently archived in the NDCDB. All DEM data is equivalent to or better than USGS DEM standard level 1. The DEM used in the production of DOQ's generally has a 30-meter grid post spacing and possesses a vertical RMSE of 7-meters or less. A DEM covering the extent of the photograph is used for the rectification. The DEM is traversed from user-selected minimum to maximum X-Y values and the DEM X-Y-Z values are used to find pixel coordinates in the digitized photograph using transformations mentioned above. For each raster image cell subdivision, a brightness or gray-scale value is obtained using nearest neighbor, bilinear, or cubic convolution resampling of the scanned image. The pixel processing algorithm is indicated in the header file . An inverse transformation relates the image coordinates referenced to the fiducial coordinate space back to scanner coordinate space. For those areas for which a 7.5-minute DEM is unavailable and relief differences are less than 150 feet, a planar-DEM (slope-plane substitute grid) may be used. Rectification Process: The photo control points and focal length are iteratively fitted to their conjugate ground control points using a single photo space resection equation. From this mathematical fit is obtained a rotation matrix of constants about the three axes of the camera. This rotation matrix can then be used to find the photograph or camera coordinates of any other ground X-Y-Z point. Next a two dimensional fit is made between the measured fiducial marks on the digitized photograph and their conjugate camera coordinates. Transformation constants are developed from the fit and the camera or photo coordinates are used in reverse to find their conjugate pixel coordiates on the digitized photograph. Quality Control: All data is inspected according to a quality control plan. DOQ contractors must meet DOQ standards for attribute accuracy, logical consistency, data completeness and horizontal positional accuracy. During the initial production phase, all rectification inputs and DOQ data sets are inspected for conformance to standards. After a production source demonstrates high quality, inspections will be made to 10% of delivery lots (40 DOQs per lot). All DOQ's are visually inspected for gross positional errors and tested for physical format standards. Source_Used_Citation_Abbreviation: DEM1, PHOTO1, CONTROL_INPUT, CAMERA_INPUT Process_Date: Unknown Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: Column_Count: Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 17 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .09996 Longitude_of_Central_Meridian: -81.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: .9996 Longitude_of_Central_Meridian: -75.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1 Ordinate_Resolution: 1 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: For DOQ's from panchromatic source each pixel contains an 8-bit gray-scale value between 0-255. A value of 0 represents the color black while a value of 255 represents the color white. All values between 0 and 255 are repesented as a shade of gray varying from black to white. For color-infrared and natural color DOQs' a digital number from 0 to 255 will also be asssigned to each pixel but that number will refer to a color look-up table which will contain the RGB red, blue and green (RGB) values, each from 0 to 255, for that digital number. Areas where the rectification process is incomplete due to incomplete data (i.e., lack of elevation data, gaps), are represented with the numeric value of 0. Entity_and_Attribute_Detail_Citation: U.S. Department of the Interior, U.S. Geological Survey, 1992, Standards for digital orthophotos: Reston, VA. A hypertext version is available at: Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: West Virginia State GIS Technical Center Contact_Address: Address_Type: mailing address Address: 425 White Hall, Dept. Geology and Geography City: Morgantown State_or_Province: WV Postal_Code: 26506 Contact_Voice_Telephone: 1 304 293 5603 x4339 Contact_Electronic_Mail_Address: WVGIS@wvu.edu Hours_of_Service: 0800-1600 Resource_Description: Digital Orthophotoquad Distribution_Liability: Although these data have been processed successfully on a computer system at the U.S. Geological Survey no warranty expressed or implied is made by the USGS regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The USGS will warrant the delivery of this product in computer-readable format and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Requests for adjustments of credit must be made within 90 days from the date of this shipment from the ordering site. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Compressed USGS DOQ in MrSID format. Format_Information_Content: MrSID uses a lossy compression technique in that data is purged; however, it achieves virtually lossless compression even at ratios of 20 to 30:1. The compression is based on wavelet technology. Wavelet algorithms also take into account the fact that the amount of detail may vary within the image, which is perfect for geospatial images that tend to represent detailed urban areas as well as large areas of no detail within a single image. This technique transforms the bits of the image using a mathematical formula to combine the advantages of lossy and lossless compression: small file size, excellent image quality, and geometric accuracy. Using MrSID decomression techniques results in a final product, so no decompression is necessary. MrSID files can be viewed in *.sid compatible viewers. Transfer_Size: 6 Mb Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: Fees: Free when accessed by FTP; incidental charges for media, contact wvgis@wvu.edu for more information Metadata_Reference_Information: Metadata_Date: 199501 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: 508 National Center City: Reston State_or_Province: VA Postal_Code: 22092 Contact_Voice_Telephone: 703 648 4543 Metadata_Standard_Name: Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998