General

1.  Fishman, N.S., Evans, J.M., Olmstead, R.J., and Langer, W.H., 2000, 3-D image of urban areas and mountains of the northern Front Range, Colorado: U.S. Geological Survey Geologic Investigations Series I-2750-A.

USGS Geologic Investigations Series I-2750-A is the digital image basemap for a series (USGS Geologic Investigations Series I-2750 ) designed to present information about infrastructure resources, or other regional spatial information, in a manner that can be understood and appreciated by experts and the public alike. The 3-D image basemap covers much of the northern Front Range urban corridor, including the Denver metropolitan area and the rapidly growing areas in western Adams, western Arapahoe, eastern Boulder, southeastern Larimer, southwestern Weld, northern Douglas, and Jefferson Counties.

 
Aggregate

2.  Knepper, D.H., Jr., Green, G.N., and Langer, W.H., 1999, Lithologic and aggregate attributes for the digital geologic map of Colorado: U.S. Geological Survey Open-File Report 99-29 (CD-ROM).   These data are available through:
http://greenwood.cr.usgs.gov/index.html

Subdirectories 
     VALUE: A subdirectory that contains the value added lithology and aggregate quality attribute file and an ARC/INFO AML that can load and join the file to an existing ARC database.
     JOINED: For those sites without a full version of ARC/INFO this  subdirectory contains a version of the Digital Geologic 
Map of Colorado with the lithology and aggregate quality 
attributes.
     COLORADO: An unattributed original version of Digital Geologic Map of Colorado, USGS OFR-92-0507.

 

3. Schwochow, S.D., Shroba, R.R., and Wicklein, P.C., 1974, Atlas of sand, gravel, and quarry aggregate resources, Colorado Front Range Counties: Colorado Geological Survey Special Publication 5B, compiled by Cappa, J.A., Hiatt, C.S., Litke, D.W., McCormick, M.L., and Sadlick, Joseph, 2000, Colorado Geological Survey and U.S. Geological Survey Open-File Report 00-9 (CD-ROM).

Subdirectories
    Metadata Files
     Panelled aggregate datasets
     Aggregate note/names files
     Individual county aggregate datasets
     Quadrangle grid dataset
     County boundary datasets

 

4. Barnett, Adrienne, and Ellefsen, K.J., 2000, Assessment of the alluvial sediments in the Big Thompson River valley, Colorado: U.S. Geological Survey Digital Data Series DDS-066, v. 1.0.

A. Summary report on collection, processing, and interpretation of 
     S-wave refraction data.
B.  Adobe Acrobat software.
C.  Seismic and ancillary data.
D.  Seismmogram viewing software.
E.  README.txt

 

Energy

1.  Higley, D.K., Pollastro, R.M., and Clayton, J.L., 1995, Denver Basin Province (039) in Gautier, D.L., Dolton, G.L., Takahashi, K.I., and Varnes, K.L., eds., 1995 National assessment of United States  oil and gas resources on CD-ROM: U.S. Geological Survey Digital Data Series 30.  Access to on-line files via anonymous ftp is through the directory:
http://greenwood.cr.usgs.gov/pub/dds/dds-030 or http://greenwood.cr.usgs.gov/maps/dds.html

 

 

 

Water

1.      These files can be accessed through:
http://webserver.cr.usgs.gov/frirp/water_project/shaqpage.html

  • bedrock outcrop 
  • thickness of unconsolidated sediments 
  • water table altitude 
  • buried bedrock surface altitude 
  • saturated thickness of the shallow aquifers 
  • depth-to-the-water table 

Links to metadata and on-line digital geospatial datasets used in creating "Geohydrology of the shallow aquifers in the Denver metropolitan area, Colorado :U.S. Geological Survey Hydrologic Atlas HA-736 " (Warning: both the Arc/INFO Export and the tar file SDTS directories are compressed with GNU gzip public-domain file compression utility).

 

2.      These files can be accessed through:
http://webserver.cr.usgs.gov/frirp/water_project/shaqpage.html

  • bedrock outcrop (Arc/INFO Export format) 
  • bedrock outcrop (tar'ed directory of SDTS format) 
  • thickness of unconsolidated sediments(Arc/INFO Export format) 
  • thickness of unconsolidated sediments (tar'ed directory of SDTS format) 
  • water table altitude (Arc/INFO Export format) 
  • water table altitude (tar'ed directory of SDTS format) 
  • buried bedrock surface altitude(Arc/INFO Export format) 
  • buried bedrock surface altitude (tar'ed directory of SDTS format) 
  • saturated thickness of the shallow aquifers(Arc/INFO Export format) 
  • saturated thickness of the shallow aquifers (tar'ed directory of SDTS format) 
  • depth-to-the-water table (Arc/INFO Export format) 
  • depth-to-the-water table (tar'ed directory of SDTS format) 

  

 

3.      Click here to view bedrock aquifer maps in pdf format.

Click on desired dataset below to access the dataset itslef (SDTS or ArcInfo format): 

  • arapbase - structure contours of base of upper Arapahoe aquifer 
  • geo - geohydrologic unit boundaries along the Colorado Front Range 
  • geosymb - point and line geologic structure information 
  • lfhbase - structure contours of base of Laramie-Fox Hills aquifer
  • lfhtop - structure contours on top of Laramie-Fox Hills aquifer
  • studyarea - outline of study area boundary
  • wells - location of wells for study area

Metadata and links to on-line digital geospatial datasets used in creating "Structure, Outcrop, and Subcrop of the Bedrock Aquifers Along the Western Margin of the Denver Basin, Colorado :U.S. Geological Survey Hydrologic Atlas HA-742 ".

 

4.      The metadata and datasets (ArcInfo Export, ESRI Shapefile, and SDTS Export formats) are available through the following links:

Links to metadata and on-line digital geospatial datasets used in creating "Geohydrology of the shallow aquifers in the Greeley-Nunn, Fort Collins-Loveland, Fort Lupton-Gilcrest, and Boulder-Longmont areas, Colorado, U.S. Geological Survey Hydrologic Atlases HA-746A, B, C, and D. "(Warning: the SDTS directories and ESRI Shapefile directories are archived with the public-domain archive-creation utility, GNU tar, and compressed with the public-domain file compression utility, GNU gzip. The Arc/INFO Export Files are compressed with GNU gzip).

 

 

Land 

1.   Land Use and Land Cover Data Sets.  Click on desired time period below to access those datasets: 

  • 1990s time frame
    • lu90.e00 - Arc Info coverage export file
    • lu90.html - Metadata file for lu90.e00
    • lu90.e00.gz - Arc Info coverage export file compressed with GNU ZIP
  • 1970s time frame
    • lu70.e00 - Arc Info coverage export file
    • lu70.html - Metadata file for lu70.e00
    • lu70.e00.gz - Arc Info coverage export file compressed with GNU ZIP 
  • 1950s time frame
    • lu50.e00 - Arc Info coverage export file
    • lu50.html - Metadata file for lu50.e00
    • lu50.e00.gz - Arc Info coverage export file compressed with GNU ZIP 
  • 1930s time frame
    • lu30.e00 - Arc Info coverage export file
    • lu30.html - Metadata file for lu30.e00
    • lu30.e00.gz - Arc Info coverage export file compressed with GNU ZIP 

These high resolution land use and land cover (LULC) data sets were generated as part of the Land Characterization research activities for the Front Range Infrastructure Resources (FRIR) Project. 

The data set covers the project's 45 1:24,000-scale quadrangle demonstration area that covers the Front Range of Colorado south from Ft. Collins to the southern portion of Denver metropolitan area (not including Highlands Ranch, Douglas County); and west from Denver International Airport to the eastern foothills of the Rocky Mountains. 

The data was generated for 4 time periods: 1930s (source: 1937/1938 aerial photography), 1950s (source: 1953-1958 USGS and USDA aerial photography), 1970s (source: 1975, 1977-1978 USGS and USDA aerial photography), and 1990s (source: 1996/1997 imagery).  The data was collected using a Modified-Anderson Classification (detailed in the metadata files) at a 2.5 acre minimum mapping unit.

The land characterization research activities are part of the USGS Land Cover Characterization Program and the USGS Urban Dynamics Research Program.

 

2.   Base Cartographic Data Sets.  Click on desired overlay below to access those datasets: 

  • Boundaries
    • fribd.e00 - Arc Info coverage export file (lines,polygons)
    • fribd.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • fribd.zip - Arc View Shape files (lines, polygons) compressed with winzip
    • fribd.html - Metadata file for fribd files
  • Hydrography
    • frihy.e00 - Arc Info coverage export file (lines, polygons, nodes)
    • frihy.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frihyx.e00 - Arc Info coverage export file (point)
    • frihyx.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frihy.zip - Arc View Shape files (lines, poly, node, point) compressed with winzip
    • frihy.html - Metadata file for frihy files
  • Roads
    • frird.e00 - Arc Info coverage export file (lines)
    • frird.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frird.zip - Arc View Shape files (lines) compressed with winzip
    • frird.html - Metadata file for frird files
  • Railroads
    • frirr.e00 - Arc Info coverage export file (lines,polygons)
    • frirr.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frirr.zip - Arc View Shape files (lines, polygons) compressed with winzip
    • frirr.html - Metadata file for frirr files
  • Miscellaneous Transportation (pipe/transmission lines, airports, etc.)
    • frimt.e00 - Arc Info coverage export file (lines,polygons)
    • frimt.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frimt.zip - Arc View Shape files (lines, polygons) compressed with winzip
    • frimt.html - Metadata file for frimt files
  • Man-made Structures
    • frims.e00 - Arc Info coverage export file (lines, polygons, nodes)
    • frims.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frimsx.e00 - Arc Info coverage export file (point)
    • frimsx.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • frims.zip - Arc View Shape files (lines, poly, node, point) compressed with winzip
    • frims.html - Metadata file for frims filest file compressed with GNU ZIP 
  • Public Land Survey System (PLSS)
    • fripl.e00 - Arc Info coverage export file (lines,polygons)
    • fripl.e00.gz - Arc Info coverage export file compressed with GNU ZIP
    • fripl.zip - Arc View Shape files (lines, polygons) compressed with winzip
    • fripl.html - Metadata file for fripl files

These base cartograpic layer  data sets were generated as part of the Land Characterization research activities for the Front Range Infrastructure Resources (FRIR) Project. These data sets form a consistent base layer for the study area.

The data set covers the project's 45 1:24,000-scale quadrangle demonstration area that covers the Front Range of Colorado south from Ft. Collins to the southern portion of Denver metropolitan area (not including Highlands Ranch, Douglas County); and west from Denver International Airport to the eastern foothills of the Rocky Mountains. 

These base cartographic layers were digitally revised from 1 meter digital imagery and the original Digital Line Graph (DLG) files. The DLG feature attributes were translated into user-friendly data sets. The translated attribution is described below in the Supplemental_Information section of the accompanying metadata files.  The metadata files were compiled by feature overlay.

 

 

 

  1. Owens, Thomas, et. al.

The Comprehensive Urban Ecosystem Study (CUES) project -  Home: http://rockyweb.cr.usgs.gov/cues/

.

The Comprehensive Urban Ecosystem Study (CUES) project -  Colorado Front Range: http://rockyweb.cr.usgs.gov/cues/COcuesHome.html

The Comprehensive Urban Ecosystem Study (CUES) project -  Colorado Land Use Data: http://rockyweb.cr.usgs.gov/cues/downloads/

 



U.S. Department of the Interior, U.S. Geological Survey
URL:http://rockyweb.cr.usgs.gov/frontrange/datasets.htm
Contact: Dan Knepper mailto:dknepper@usgs.gov
Updated: 04/16/ 2003