Railroads - Clipped

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey, Rocky Mountain Mapping Center

Publication_Date: 1998

Title: Railroads - Clipped

Edition: First

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: Rio Puerco Project GIS Database

Issue_Identification: railroads_cl

Publication_Information:

Publication_Place: Denver, Colorado, USA

Publisher: U.S. Geological Survey

Description:

Abstract:

This data set contains the railroads that are within the perimeter of the Rio Puerco watershed basin. Some parts of some of the portrayed features lie outside of the Rio Puerco basin; those parts of the features external to the basin are not portrayed. Processing software was ARC/INFO 7.1.1.

Description of Parent Data Set: It is in a vector digital data structure, taken from the 1994 U.S. Census Bureau's TIGER/Line files for New Mexico. The 1994 TIGER/Line files are an extract of selected geographic and cartographic information from the Census TIGER data base. The source software used was ARC/INFO 7.0.3.

Purpose:

This data set was created to digitally represent the railroads within the Rio Puerco basin.

Intended use of data: These data are typically used as base data for other coverages, and should be used at scales of 1:500,000 and smaller. The data are intended for use as a general reference to the location of the railroads.

Supplemental_Information:

Please refer to the Census Bureau TIGER/Line documentation, available from the U.S. Census Bureau or online at <URL:http://www.census.gov/geo/www/tiger/>, for more information.

Related spatial and tabular data sets: Rio Puerco Watershed Basin Boundary (wshed)

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1998

Currentness_Reference: Publication date of sources

Status:

Progress: Complete

Maintenance_and_Update_Frequency:

Source data products are updated on an individual basis by the source agency. Users should contact the appropriate source agency to determine the availability of updated information.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -109.23688133

East_Bounding_Coordinate: -105.50567419

North_Bounding_Coordinate: 37.02803117

South_Bounding_Coordinate: 33.16460804

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: railroads

Theme_Keyword: TIGER/Line Files

Theme_Keyword: transportation

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Rio Puerco

Place_Keyword: New Mexico

Access_Constraints: None

Use_Constraints:

There are no legal constraints on the use of this data. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Raymond D. Watts

Contact_Organization:

U.S. Geological Survey and Cooperative Institute for Research in the Atmosphere

Contact_Address:

Address_Type: mailing and physical address

Address: CIRA, Foothills Research Campus

Address: Colorado State University

City: Ft. Collins

State_or_Province: Colorado

Postal_Code: 80523

Country: USA

Contact_Voice_Telephone: 970-491-3982

Contact_Facsimile_Telephone: 970-491-8241

Contact_Electronic_Mail_Address: rwatts@usgs.gov -or- rwatts@cira.colostate.edu

Data_Set_Credit:

This data set was obtained from the New Mexico Resource Geographic Information System (RGIS) Clearinghouse. For more information on RGIS, please visit their Home Page at <URL:http://rgis.unm.edu>.

Native_Data_Set_Environment:

UNIX ARC/INFO version 7.1.1

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Attribute accuracy for this data set is assumed to be 100%.

Accurate against Federal Information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy.

Logical_Consistency_Report:

Attributes and processing steps were consistent for the entire data set.

Completeness_Report:

Data completeness of the TIGER/Line files reflects the contents of the Census TIGER data base at the time the TIGER/Line files (1994 version) were created.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The information present in these files is provided for the purposes of statistical analysis and census operations only. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. The positional accuracy varies with the source materials used, but generally the information is no better than the established National Map Accuracy standards for 1:100,000-scale maps from the U.S. Geological Survey (USGS); thus it is NOT suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The USGS 1:100,000-scale maps meet national map accuracy standards and use coordinates defined by the North American Datum, 1983. For the contiguous 48 States, the cartographic fidelity of most of the 1995 TIGER/Line files, in areas outside the 1980 census Geographic Base File/Dual Independent Map Encoding (GBF/DIME) file coverage and selected other large metropolitan areas, compare favorably with the USGS 1:100,000-scale maps.

Accuracy of these digital data (if not digitally revised), is based upon the use of source graphics which are compiled to meet National Map Accuracy Standards. NMAS horizontal accuracy requires that at least 90 percent of points tested are within 1/50th of an inch of the true position. Comparison to the graphic source is used as control to asses digital positional accuracy. Cartographic offsets may be present on the graphic source, due to scale and legibilty constraints. For more information on National Map Accuracy Standards, refer to USGS Fact Sheet FS-078-96 (September 1997), or visit <URL:http://mapping.usgs.gov/mac/isb/pubs/factsheets/fs07896.html>.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

U.S. Department of Commerce, Bureau of the Census, Geography Division

Publication_Date: 19940101

Title: Transportation, Railroads

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: TIGER/Line Census Files

Issue_Identification: none

Publication_Information:

Publication_Place: Washington DC, USA

Publisher:

U.S. Department of Commerce, Bureau of the Census, Geography Division

Source_Scale_Denominator: 100,000

Type_of_Source_Media: online

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1994

Source_Currentness_Reference: Publication date of sources

Source_Citation_Abbreviation: Census 1994

Source_Contribution: spatial and attribute information

Process_Step:

Process_Description:

The data sets for the eight New Mexico counties in the Rio Puerco basin were copied from cd-rom media (RGIS) onto a Sun Unix server, where they were processed with ARC/INFO 7.1.1. The data sets were appended together, clipped with the perimeter of the Rio Puerco watershed basin (wshed), and reprojected from geographic coordinates into Universal Transverse Mercator (UTM) coordinates.

One section of railroads known to Rio Puerco project members was not included in the TIGER/Line files. This railroad was added to the coverage by manually digitizing line segments on-screen. Bands 4 and 5 of a July 1989, Landsat TM image were used as reference for the location of the railroad being added. This image, which had previously been registered to a vector road coverage using an affine transformation, has an estimated positional accuracy of 60m (30m of intrinsic resolution and about 30m of image registration error.)

Process_Date: 1997

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Some attributes in <covername>.aat, including fnode#, tnode#, lpoly#, rpoly#, length, cover#, and cover-id are included in the coverage by default. Please refer to ESRI's ARC/INFO documentation for more detailed descriptions of these attributes.

The 'source' attribute contains the feature source code;

The 'fname' attribute contains the feature name;

The 'cfcc' attribute contains the census feature class code;

The 'recnum' attribute contains the permanent record number;

Entity_and_Attribute_Detail_Citation:

Please refer to the Census Bureau TIGER/Line documentation, available from the U.S. Census Bureau or online at <URL:http://www.census.gov/geo/www/tiger/>, for more information.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Raymond D. Watts; U.S. Geological Survey and Cooperative Institute for Research in the Atmosphere

Contact_Address:

Address_Type: mailing and physical address

Address: CIRA, Foothills Research Campus

Address: Colorado State University

City: Ft. Collins

State_or_Province: Colorado

Postal_Code: 80523

Country: USA

Contact_Voice_Telephone: 970-491-3982

Contact_Facsimile_Telephone: 970-491-8241

Contact_Electronic_Mail_Address: rwatts@usgs.gov -or- rwatts@cira.colostate.edu

Distribution_Liability:

The U.S Geological Survey provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name:

"ARCE" ARC/INFO Export Format (option 1 of 2 - see other options below)

File_Decompression_Technique:

The 'tar' archive technique and the 'gzip' compression technique were applied to this data set. Unix users should use the 'gunzip' command to expand the data set and the 'tar' command to extract the files. Other users should obtain versions of gunzip and tar for their operating system. Please refer to <URL:http://www.gzip.org> or <URL:http://esp.cr.usgs.gov/rio_puerco/library/rphelp.html> for more information.

If these sites are unavailable, please send inquiries about the Free Software Foundation to:

Free Software Foundation
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
Voice: 617-542-5942
Fax: 617-542-2652

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<URL:ftp://esp.cr.usgs.gov/pub/rio_puerco/clipped/railroads_cl.tar.gz>

Digital_Form:

Digital_Transfer_Information:

Format_Name:

ArcView shapefile (option 2 of 2 - see other options above)

File_Decompression_Technique:

The 'zip' compression technique was applied to this data set. Windows and Macintosh users can access these files using freeware or shareware decompression software. Please refer to <URL:http://esp.cr.usgs.gov/rio_puerco/library/rphelp.html> for more information, or search for utilities at <URL:http://www.shareware.com>.

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

<URL:ftp://esp.cr.usgs.gov/pub/rio_puerco/shpfiles/railroads_cl.zip>

Fees: none