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_depth_bottom_trinidad_con Watts, K.R. 2006 document Scientific Investigations Report 2006-5129 Reston, VA U.S. Geological Survey http://pubs.usgs.gov/sir/2006/5129/ This digital geospatial data set consists of contours of lines of equal depth to the bottom of the Trinidad Sandstone, the contact between the Trinidad Sandstone and Pierre Shale, in Las Animas County, Colorado. The U.S. Geological Survey developed this data set as part of a cooperative project with the Colorado Water Conservation Board. This data set was created to display the generalized depth to the top of the Trinidad Sandstone in Las Animas County, Colorado. 2006 publication date Complete None planned -105.104813 -104.236391 37.424833 36.992084 ISO 19115 Topic Category inlandWaters geoscientificInformation Geographic Names Information System (GNIS) Colorado Las Animas County Geologic Names Lexicon (GEOLEX) Trinidad Sandstone Pierre Shale None This data set was prepared at a map scale of 1:400,000. 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_depth_bottom_trinidad_con 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_cogcc_wells_point 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/ Contour lines were visually inspected for topological errors (crossing or touching contours). No errors were detected. Includes only contours within the Raton Basin, Las Animas County, Colorado. Contours not well supported by data were deleted. A raster was created from the contours of the altitude of the bottom of the Trinidad Sandstone, using the ESRI ArcGIS ArcInfo Workstation command Topogridtool.. 20060313 The Spatial Analyst Tools Math command Minus was used to subtract raster data for the altitude of the bottom of the Trinidad Sandstone from raster data for the land-surface altitude and o create a raster data for the depth to the bottom of the Trinidad Sandstone. 20060313 Contours were generated from the raster data, using the ESRI ArcGIS ArcMap, Spatial Analyst Tools, Surface function, Contour. 20060313 Contours were clipped to the study area to coincide with the distribution of data points that were used to create contours of the altitude of top of the Trinidad Sandstone (sir-06-5129_alt_top_trinidad_con) and of the thickness of the Trinidad Sandstone (sir-06-5129_thickness_trinidad_con) . 20060313 The contour lines were exported to a coverage, using the ESRI ArcGIS ArcMap Conversion Tools Feature Class To Coverage command. 20060313 The coverage was edited using the ArcEdit module of ESRI ArcGIS ArcInfo Workstation. Editing consisted of deleting small closed contours and contours not supported by nearby data points, and manually reshaping contours. 20060313 The edited coverage was exported to a shapefile and the contours were smoothed, using the ESRI ArcGIS Data Management Tools, Smooth function. 20060313 Vector String 70 Albers Conical Equal Area 37.500000 40.000000 -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_depth_bottom_trinidad_con Contours showing generalized depth from land surface to bottom of Trinidad Sandstone U.S. Geological Survey Scientific Investigations Report 2006-5129 FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. CONTOUR Line of equal depth, evenly divisible by 500 USGS 500 3500 feet INDEX Contour type (index or intermediate) USGS 0 Intermediate contour USGS 1 Index contour, every fifth contour, evenly divisible by 2,500 USGS 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_depth_bottom_trinidad_con 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 no compression applied 0.083 http://water.usgs.gov/GIS/dsdl/SIR-06-5129_depth_bottom_trinidad_con.zip None. This dataset is provided by the USGS as a public service. 20061013 20060922 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston VA 20192 USA 1-888-2758747 (1888-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, Inc. (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