Michael J. Holmberg 2017 Shapefile Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 U.S. Geological Survey Scientific Investigations Map 3378 Reston, VA U.S. Geological Survey https://doi.org/10.3133/sim3378 Contours (20-foot interval) showing altitude of the bedrock surface in feet above NGVD 29 underlying the alluvium in the Lower Arkansas River Valley, Southeast Colorado. Source contours scale was 1:62,500. All digitizing and geoprocessing was done using ArcGIS Desktop v10 (Environmental Systems Research Institute, 2011) This dataset was used in an analysis with land surface altitude to derive thickness of the alluvium and saturated thickness (see cross references) in a portion of the alluvium of the Lower Arkansas River Valley, Southeast Colorado 2001 2015 publication date Complete Not planned -104.6805 -102.0308 38.3764 37.9382 USGS Thesaurus hydrogeology bedrock USGS Metadata Identifier USGS:58e2b604e4b09da67996a970 Geographic Names Information System (GNIS) Pueblo County Crowley County Otero County Bent County Prowers County Arkansas River none none Michael J. Holmberg USGS mailing and physical

201 E. 9th St.

Pueblo Colorado 81003 USA 719-562-2847 mholmber@usgs.gov Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 Michael J. Holmberg 2017 Reston, VA U.S. Geological Survey https://doi.org/10.5066/F71G0JF6 No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. Digital scans of paper maps were georeferenced using Township, Range, and Section lines as reference coordinate system. No formal positional accuracy tests were conducted Environmental Systems Research Institute 2011 Computer Software Redlands, CA Environmental Systems Research Institute https://arcgis.com/ Computer Software Unknown Unknown Current ArcGIS Geospatial Analysis, Digitization Hurr, R.T. and Moore, J.E. 1972 Digital scan of paper map Online U.S. Geological Survey http://ngmdb.usgs.gov/Prodesc/proddesc_15848.htm Contour 19720101 19890101 Publication dates Bent Bedrock Contours Bedrock Contours and Aquifer Boundary Nelson, G.A., Hurr, R.T., and Moore, J.E 1989 Digital scan of paper map Online U.S. Geological Survey http://ngmdb.usgs.gov/Prodesc/proddesc_17614.htm Contour 19720101 19890101 Publication dates Crowley and Otero Bedrock Contours Bedrock Contours Nelson, G.A., Hurr, R.T., and Moore, J.E 1989 Digital scan of paper map Online U.S. Geological Survey http://ngmdb.usgs.gov/Prodesc/proddesc_17615.htm Contour 19720101 19890101 Publication dates Pueblo Bedrock Contours Bedrock Contours Nelson, G.A., Hurr, R.T., and Moore, J.E 1989 Digital scan of paper map Online U.S. Geological Survey http://ngmdb.usgs.gov/Prodesc/proddesc_17613.htm Contour 19720101 19890101 Publication dates Prowers Bedrock Contours Bedrock Contours Georeferenced digital scans of paper maps using township, range, and section lines as reference coordinate system. Georeferencing was done using ArcGIS Desktop v10 (Environmental Systems Research Institute, 2011). 20160105 Digitized bedrock contours from multiple sources into one complete dataset. 20160204 Vector Universe Transverse Mercator Zone 13 North 0.9996 -105.0 0.0 500000.0 0.0 coordinate pair 1.0 1.0 METERS National Geodetic Vertical Datum of 1929 20.0 US Survey Feet Attribute values Bedrock Contours Elevation of bedrock contours U.S. Geological Survey FID Arbitrary number assigned to line features ESRI assigned 1 259 Elevation Elevation value associated with contour lines U.S. Geological Survey 3200 4840 feet Shape_Length Length of individual contour line features ESRI Assigned 112.92 42528.95 meters Science Base U.S. Geological Survey mailing and physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. This file contains data available in ESRI shapefile format. The user must have software capable of displaying the shapefile. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. 20200814 Michael J. Holmberg U.S. Geological Survey Hydrologist mailing and physical

201 E. 9th St.

Pueblo Colorado 81003 USA 719-562-2847 mholmber@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998