U.S. Geological Survey 2006 vector digital data Scientific Investigations Report 2006-5129 Reston, VA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?sir-06-5129_cogcc_wells_point Watts, K.R. 2006 document Scientific Investigations Report 2006-5129 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/sir/2006/5129/ This geospatial data includes oil and gas wells within the Colorado portion of the Raton Basin, as of January 2005. It includes a subset of over 60,000 existing and proposed oil and gas well locations within the State of Colorado. The well point data represent permitted locations, most of which have been drilled and completed, or drilled and abandoned. Some permitted locations were never drilled; these locations are also included in the shapefile. Selected well identification numbers and other header information are provided as attributes. The Colorado Oil and Gas Conservation Commission (COGCC) is the official repository for Colorado's oil and gas information. Links to the COGCC website and to the shapefile (WELL_SHP), which were used to develop this geospatial data, are provided in the Cross-Reference section in these metadata. The primary purpose of this geospatial data is to provide geospatial information for 2,673 selected oil and gas wells in the Raton Basin, in Huerfano and Las Animas Counties, Colorado. More complete information can be accessed at the COGCC website from which this shapefile was downloaded. Links to the COGCC website and to the shapefile (WELL_SHP), which was used to develop this geospatial data, are provided in the Cross-Reference section in these metadata. 2006 publication date Complete None planned -105.154445 -104.260455 37.738381 36.988435 ISO 19115 Topic Category inlandWaters geoscientificInformation Geographic Names Information System (GNIS) Huerfano County Las Animas County Colorado New Mexico Geologic Names Lexicon (GEOLEX) Huerfano Formation Cuchara Formation Poison Canyon Formation Raton Formation Vermejo Formation Trinidad Sandstone Pierre Shale none Does not include well locations or changes in attribute information entered into the COGIS database after January 2005. U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-88827508747 (1-888ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir-06-5129_cogcc_wells_point Compilation of this data set and associated metadata was done in cooperation with the Colorado Water Conservation Board. Technical review of this data set and metadata was provided by Steve Char of the U.S. Geological Survey. Public Unclassified None Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_bottom_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_top_vermejo_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_alt_water_table_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_cogcc_production_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_bottom_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_top_vermejo_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_depth_water_table_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_formation_tops_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_seo_wells_point U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_raton_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_trinidad_con U.S. Geological Survey 2006 vector digital data http://water.usgs.gov/lookup/getspatial?sir-06-5129_thickness_vermejo_con Johnson, R.B. 1969 document U.S. Geological Survey Miscellaneous Investigations Series Map I-558, scale 1:250,000, reprinted in 1983 http/pubs.er.usgs.gov/usgspubs/i/i558 Green, G.N. 1992 vector digital data U.S. Geological Survey Open-File Report 92-507 Part A. Documentation Part B. Common files Part C. Explanation sheet database Part D-O. Geospatial data in ARC/INFO format http://pubs.usgs.gov/of/1992/ofr-92-0507/ Geospatial data were copied from the COGIS database at http://www.oil-gas.state.co.us/Downloads/WELL_SHP.ZIP. Includes only oil and gas wells from the COGIS database that are in within 1 mile of the boundary of the Raton Basin in Colorado. Does not include well locations or changes in attribute information entered into the COGIS database after January 2005. Horizontal accuracy is primarily controlled by two factors: 1) the quality of the data submitted by Oil and Gas Operators and 2) the process used by COGCC to convert footage calls from section boundaries to coordinate values. The first factor is usually not an issue because the well locations are surveyed and or located using GPS equipment. The second factor is related to the COGCC well spotting program. Footage calls from section lines were read by an AutoCAD program that uses a 1:24,000 digital land grid for the base map. The wells were spotted as perpendicular offsets to section lines or as the center of a quarter quarter and latitude, longitude, UTM X, and UTM Y values were calculated and written to the COGIS database. As of December 1, 2005, all new well permits are submitted to the COGCC with GPS latitudes and longitudes. These coordinates are entered directly into the COGIS database and inaccuracies associated with the well spotting program are not incurred. The compressed shapefile was down-loaded from the COGCC website (http://www.oil-gas.state.co.us/Downloads/WELL_SHP.ZIP) and was decompressed. 20050131 Wells within the Raton Basin in Huerfano and Las Animas Counties, Colorado were selected, based on spatial location. The clipping polygon consisted of a polygon, generally defined by the contact of the Pierre Shale with the Vermejo Formation-Trinidad Sandstone (undifferentiated) from the digital geologic map of Colorado (Green, 1992); the southern boundary is defined by the boundary between Colorado and New Mexico; and the northern boundary is based on a line connecting the northernmost exposed contacts of the Pierre Shale with the Vermejo Formation-Trinidad Sandstone, where overlain by the Huerfano and Poison Canyon Formations in Huerfano County, Colorado. 20050131 Vector Entity point 2674 Albers Conical Equal Area 37.500000 40.500000 -105.500000 37.000000 0.000000 0.000000 coordinate pair 0.000128 0.000128 meters North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 sir-06-5129_cogcc_wells_point Oil and gas wells in the Raton Basin, Huerfano and Las Animas Counties, Colorado, 2004 USGS FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. LINK_FLD Attribute used in geospatial databse as a keyfield. It is based on attribute API_NUMBER. USGS 0505505000 0507160013 API_NUMBER American Petroleum Institute (API) well number American Petroleum Institute (API) and COGCC 05-055-05000 05-071-60013 FACILITY_T Faciltity Type COGCC WELL Oil or gas well location (abandoned, existing, or proposed) COGCC FACILITY_S Facility Status COGCC AB Abandoned completion COGCC AL Abandoned location COGCC DA Dry and abandoned COGCC IJ Injecting COGCC PA or pa Plugged and abandoned COGCC PR Producing COGCC SI Shut in COGCC TA Temporarily abandoned COGCC UN Unitized COGCC VP Verbal plugging orders COGCC WO Waiting on completion COGCC XX Location COGCC DIST_N_S Distance from north (N) or south (S) Public Land Survey System section line COGCC 0 4870 feet DIR_N_S Direction in which distance (DIST_N_S) was measured from Public Land Survey System section line. COGCC N North COGCC S South COGCC E Erroneous direction COGCC Null value Null value COGCC DIST_E_W Distance from east (E) or west (W) Public Land Survey System section line COGCC 0 4760 feet DIR_E_W Direction in which distance (DIST_E_W) was measured from Public Land Survey System section line. COGCC E East COGCC W West COGCC "blank" Null value COGCC QTRQTR Quarter-quarter (40-acre tract) location within a section COGCC NENE Northeast quarter of northeast quarter COGCC NENW Northeast quarter of northwest quarter COGCC NESE Northeast quarter of southeast quarter COGCC NESW Northeast quarter of southwest quarter COGCC NWNE Northwest quarter of northeast quarter COGCC NWNW Northwest quarter of northwest quarter COGCC NWSE Northwest quarter of southeast quarter COGCC NWSW Northwest quarter of southwest quarter COGCC SWNE Southwest quarter of northeast quarter COGCC SWNW Southwest quarter of northwest quarter COGCC SWSE Southwest quarter of southeast quarter COGCC SWSW Southwest quarter of southwest quarter COGCC SENE Southeast quarter of northeast quarter COGCC SENW Southeast quarter of northwest quarter COGCC SESE Southeast quarter of southeast quarter COGCC SESW Southeast quarter of southwest quarter COGCC "blank" Null value COGCC CNE Center of northeast quarter COGCC NW Northwest quarter COGCC SE Southeast quarter COGCC SW Southwest quarter COGCC SEC Public Land Survey System section number Bureau of Land Management 1 36 TWP Public Land Survey System township number and direction (south, S) from baseline COGCC 26S 35S RANGE Public Land Survey System range number and direction from meridian. All location are west (W) of the Sixth Pricipal Meridian. Bureau of Land Management 61W 69W MERIDIAN Public Land Survey System meridian Bureau of Land Management 6 Sixth Principal Meridian COGCC LATITUDE Latitude (NAD 27) COGCC 36.993567 37.737258 Decimal degrees to six decimal places LONGITUDE Longitude (NAD 27) COGCC -105.151017 -104.271484 Decimal degrees to six decimal places GROUND_ELE Reported altitude of ground surface at well location. COGCC 0 10224 feet (NAD 27) UTM_X Easting, Universal Transverse Mercator coordinates COGCC 486668 564779 meter (NAD 27) UTM_Y Northing, Universal Transverse Mercator coordinates COGCC 4093959 4176465 meter (NAD 27) U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+sir-06-5129_cogcc_wells_point Downloadable Data 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. other 0.071 http://water.usgs.gov/GIS/dsdl/SIR-06-5129_cogcc_wells_point.zip None. This dataset is provided by the USGS as a public service. 20061013 20060929 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None Although this Federal Geographic Data Committee (FGDC) compliant metadata file is intended to document the data set in nonproprietary form, as well as Environmental Systems Research, Incorporated (ESRI) ArcGIS format, this metadata file may include some ArcGIS-specific terminology. These data are not intended to be used as a survey product and are for reference purposes only. Acknowledgment of the U.S. Geological Survey and the Colorado Water Conservation Board would be appreciated in products derived from these data. Public Unclassified None http://www.esri.com/metadata/esriprof80.html ESRI Metadata Profile