Identification Information

Abstract Digital line graph (DLG) data are digital representations of cartographic information. DLG's of map features are converted to digital form from maps and related sources. Intermediate-scale DLG data are derived from USGS 1:100,000-scale 30- by 60-minute quadrangle maps. If these maps are not available, Bureau of Land Management planimetric maps at a scale of 1: 100,000 are used. Intermediate-scale DLG's are sold in five categories: (1) Public Land Survey System; (2) boundaries (3) transportation; (4) hydrography; and (5) hypsography. All DLG data distributed by the USGS are DLG - Level 3 (DLG-3), which means the data contain a full range of attribute codes, have full topological structuring, and have passed certain quality-control checks.
Purpose DLG's depict information about geographic features on or near the surface of the Earth, terrain, and political and administrative units. These data were collected as part of the National Mapping Program.

Time Period of Content

Range of Dates/Times

Beginning Date 1987-06-19
Ending Date Present

Currentness Reference publication date

Status

Progress In work
Maintenance and Update Frequency Irregular

Spatial Domain

Bounding Coordinates

West Bounding Coordinate -109.048115999846
East Bounding Coordinate -108.999977111816
North Bounding Coordinate 32.5003372468789
South Bounding Coordinate 31.9999961853027

Keywords

Theme

Thesaurus None.
Keyword digital line graph
Keyword DLG
Keyword hydrography
Keyword transportation
Keyword boundaries
Keyword U.S. Public Land Survey System
Keyword hypsography

Theme

Thesaurus ISO 19115 Topic Categories
Keyword transportation

Place

Thesaurus U.S. Department of Commerce, 1977, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions (Federal Information Processing Standard 10-3):Washington, D.C., National Institute of Standards and Technology.
Keyword US
Keyword NM
Keyword Wilcox

Place

Thesaurus U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of The United States, and associated areas (Federal Information Processing Standard 5-2):Washington ,D. C., National Institute of Standards and Technology.
Keyword FIPS codes for states covered

Access Constraints None

Use Constraints None. 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
Contact Organization

Contact Organization Primary

Contact Organization USGS
Contact Person

Contact Position Clearinghouse Manager

Contact Address

Address Type mailing and physical address
Address 508 National Center
City Reston
State or Province VA
Postal Code 20192
Country USA

Contact Voice Telephone 703-648-4543

Contact Facsimile Telephone

Contact Electronic Mail Address

Hours of Service

Contact Instructions

Native Data Set Environment Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.2.2.1350

Data Quality Information

Attribute Accuracy Report

Report Refer to Positional_Accuracy element.

Quantitative Attribute Accuracy Assessment

Attribute Accuracy Value
Attribute Accuracy Explanation

Horizontal Positional Accuracy Report

Report For Digital Revision Status = Not revised:

Quantitative Horizontal Positional Accuracy Assessment

Horizontal Positional Accuracy Value
Horizontal Positional Accuracy Explanation

Vertical Positional Accuracy Report

Report For Hypsography and Hydrography Only: For Digital Revision Status = Not revised:

Quantitative Vertical Positional Accuracy Assessment

Vertical Positional Accuracy Value
Vertical Positional Accuracy Explanation

Logical Consistency Report Topological requirements include: lines must begin and end at nodes, lines must connect to each other at nodes, lines do not extend through nodes, left and right areas are defined for each line element and are consistent throughout the file, and the lines representing the limits of the file (neatline) are free of gaps. The tests of logical consistency were performed by the USGS PROSYS program. The neatline was generated by connecting the four corners of the digital file, as established during initialization of the digital file. All data outside the enclosed region were ignored and all data crossing these geographically straight lines were clipped at the neatline. Data within a specified tolerance of the neatline were snapped to the neatline. Neatline straightening aligned the digitized edges of the digital data with the generated neatline, that is, with the longitude/latitude lines in geographic coordinates. All internal areas were tested for closure using PROSYS.

Completeness Report For Digital Revision Status = Not revised Data completeness reflects the content of the source quadrangle. Features may have been eliminated or generalized on the source graphic, due to scale and legibility constraints. For Digital Revision Status = Limited Update This file has undergone limited update digital revision. The file contains only (1) those features that are photoidentifiable on monoscopic source, supplemented with limited ancillary source, and (2) those features, present on the original source quadrangle, that can not be reliably photoidentified but that are not considered particularly prone to change. For Digital Revision Status = Standard Update This file has undergone standard update digital revision. The data completeness of this file meets NMD standards for feature content.

Lineage

Source Information

Source Citation

Citation Information

Originator U.S. Geological Survey or another mapping agency in cooperation with USGS.

Publication Date Unknown

Publication Time

Title The Topographic Map Names Data Base designation for the source quadrangle.

Geospatial Data Presentation Form map

Publication Information

Publication Place Reston, Virginia
Publisher U.S. Geological Survey

Other Citation Details

Source Scale Denominator 100000

Type of Source Media stable-base material

Source Time Period of Content

Source Currentness Reference ground condition

Source Citation Abbreviation MAP1

Source Contribution spatial and attribute information

Process Step

Process Description For Digital Revision Status = Not digitally revised: This Digital Line Graph was digitized from the USGS source quadrangle, by either the National Mapping Division, one of their cooperators, or one of their contractors. The digital data were produced by one of the following methods: - scanning a stable-based copy of the graphic materials. The scanning process captured the digital data at a scanning resolution of at least 0.001 inches; the resulting raster data were vectorized and then attributed on an interactive editing station. - scanning the paper map. The scanning process captured the digital data at a scanning resolution of at least 0.001 inches; the resulting raster data were vectorized and then attributed on an interactive editing station. - scanning a stable-based copy of the graphic materials. The resulting raster data were then manually digitized and attributed on an interactive editing station. The resolution of the digital data is at least 0.001 inches. - scanning the paper map. The resulting raster data were then manually digitized and attributed on an interactive editing station. The resolution of the digital data is at least 0.001 inches. - manually digitizing from a stable-based copy of the graphic material using a digitizing table to capture the digital data at a resolution of at least 0.001 inches; attribution was performed either as the data were digitized, or on an interactive edit station after the digitizing was completed. - manually digitizing from the paper map using a digitizing table to capture the digital data at a resolution of at least 0.001 inches; attribution was performed either as the data were digitized, or on an interactive edit station after the digitizing was completed. The determination of the DLG production method was based on various criteria, including feature density, feature symbology, and availability of production systems. Four control points corresponding to the four corners of the quadrangle were used for registration during data collection. An eight parameter projective transformation was performed on the coordinates used in the data collection and editing systems to register the digital data to the internal coordinates used in PROSYS, and a four parameter linear transformation was performed from the PROSYS internal coordinates to Universal Transverse Mercator (UTM) grid coordinates. The DLG data were checked for position by one or more of the following processes: - comparing plots of the digital data to the graphic source. - comparing the digital data to the digital raster scan. DLG data classification was checked by at least one of the following processes. - comparing plots of the digital data to the graphic source - comparing the digital data to the digital raster scan.
Source Used Citation Abbreviation MAP1
Process Date Unknown
Process Time
Process Contact

Spatial Data Organization Information

Indirect Spatial Reference Method Hidalgo County (35023)

Direct Spatial Reference Method Vector

Point and Vector Object Information

SDTS Terms Description

SDTS Point and Vector Object Type String
Point and Vector Object Count 5281

Spatial Reference Information

Spatial Reference

Name North American Datum of 1927
Code EPSG:4267
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4267

Spatial Reference

Name Clarke 1866
Code EPSG:7008
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:ellipsoid:EPSG::7008

Spatial Reference

Name National Geodetic Vertical Datum of 1929
Code EPSG:5102
URL http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:datum:EPSG::5102

Entity and Attribute Information

Detailed Description

Entity Type

Entity Type Labeltwilcox
Entity Type Definition DLG 1:100,000
Entity Type Definition Source USGS

Attribute

Attribute Label FID

Attribute Definition Internal feature number.

Attribute Definition Source ESRI

Attribute Domain Values

Unrepresentable Domain Sequential unique whole numbers that are automatically generated.

Attribute

Attribute Label Shape

Attribute Definition Feature geometry.

Attribute Definition Source ESRI

Attribute Domain Values

Unrepresentable Domain Coordinates defining the features.

Attribute

Attribute Label FNODE_

Attribute Definition Internal number of from-node.

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain Internal number

Attribute

Attribute Label TNODE_

Attribute Definition Internal number of to-node.

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain Internal number

Attribute

Attribute Label LPOLY_

Attribute Definition Internal number of poly to left of arc.

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain Internal number

Attribute

Attribute Label RPOLY_

Attribute Definition Internal number of poly to right of arc.

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain Internal number

Attribute

Attribute Label LENGTH

Attribute Definition Length of arc in coverage units.

Attribute Definition Source Unspecified

Attribute Domain Values

Unrepresentable Domain Computed

Attribute

Attribute Label ID02_

Attribute Definition Unknown

Attribute Definition Source Unknown

Attribute Domain Values

Unrepresentable Domain Unknown

Attribute

Attribute Label ID02_ID

Attribute Definition Unknown

Attribute Definition Source Unknown

Attribute Domain Values

Unrepresentable Domain Unknown

Attribute

Attribute Label NM02_

Attribute Definition Unknown

Attribute Definition Source Unknown

Attribute Domain Values

Unrepresentable Domain Unknown

Attribute

Attribute Label NM02_ID

Attribute Definition Unknown

Attribute Definition Source Unknown

Attribute Domain Values

Unrepresentable Domain Unknown

Attribute

Attribute Label MAJOR1

Attribute Definition Roads and trails

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain See http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute

Attribute Label MINOR1

Attribute Definition Road and trails description.

Attribute Definition Source http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute Domain Values

Unrepresentable Domain See http://nationalmap.gov/standards/pdf/3dlg0798.pdf

Attribute

Attribute Label MAJOR2

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MINOR2

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MAJOR3

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MINOR3

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MAJOR4

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MINOR4

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MAJOR5

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label MINOR5

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label Q100

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label AREA

Attribute Definition Area of polygon in square coverage units.

Attribute Definition Source Unspecified

Attribute Domain Values

Unrepresentable Domain Computed

Attribute

Attribute Label PERIMETER

Attribute Definition Perimeter of polygon in coverage units.

Attribute Definition Source Unspecified

Attribute Domain Values

Unrepresentable Domain Computed

Attribute

Attribute Label Q100_ID

Attribute Definition Contact USGS

Attribute Definition Source Contact USGS

Attribute Domain Values

Unrepresentable Domain Contact USGS

Attribute

Attribute Label NAME

Attribute Definition Quadrangle Name

Attribute Definition Source See USGS Index

Attribute Domain Values

Unrepresentable Domain See USGS Index

Attribute

Attribute Label ABBREV

Attribute Definition Quadrangle Name and Transportation (T)

Attribute Definition Source USGS

Attribute Domain Values

Unrepresentable Domain USGS

Overview Description

Entity and Attribute Overview DLG3 attribute codes are used to describe the physical and cultural characteristics of DLG node, line, and area elements. Attribute codes are used to reduce redundant information, provide enough reference information to support integration with larger data base, and describe the relationships between cartographic elements. Each DLG element has one or more attribute codes composed of a three digit major code and a four-digit minor code. For example, with the 1: 24,000-scale DLG data, the line attribute code 050 0412 has a major code (050), meaning hydrography, with a minor code (0412) meaning stream.
Entity and Attribute Detail Citation U.S.Department of the Interior, U.S. Geological Survey, 1987 Digital Line Graphs from 1:100,000-Scale Maps--Data Users Guide 2; Reston, Virginia A hypertext extract is available at: URL: http://edc.usgs.gov/glis/hyper/guide/usgs_dlg Softcopies in ASCII, WordPerfect, and PostScript format are available at: URL: ftp://mapping.usgs.gov/pub/ti/DLG/ U.S.Department of the Interior, U.S.Geological Survey, 1990, Standards for Digital Line Graphs; Reston, Virginia Softcopies in ASCII, WordPerfect, and PostScript format are available at: URL: ftp://mapping.usgs.gov/pub/ti/DLG/

Distribution Information

Distributor
Resource Description Downloadable Data
Distribution Liability The material on this site is made available as a public service. Maps and data are to be used for reference purposes only and the Earth Data Analysis Center (EDAC), Resource Geographic Information System (RGIS) and The University of New Mexico are not responsible for any inaccuracies herein contained. No responsibility is assumed for damages or other liabilities due to the accuracy, availability, use or misuse of the information herein provided. Unless otherwise indicated in the documentation (metadata) for individual data sets, information on this site is public domain and may be copied without permission; citation of the source is appreciated.
Custom Order Process Contact Earth Data Analysis Center at clearinghouse@edac.unm.edu
Technical Prerequisites Adequate computer capability is the only technical prerequisite for viewing data in digital form.

Metadata Reference Information

Metadata Date 2024-11-04

Metadata Review Date

Metadata Future Review Date

Metadata Contact

Contact Information

Contact Person Primary

Contact Person
Contact Organization

Contact Organization Primary

Contact Organization Earth Data Analysis Center
Contact Person

Contact Position Clearinghouse Manager

Contact Address

Address Type mailing and physical address
Address MSC01 1110
Address 1 University of New Mexico
City Albuquerque
State or Province NM
Postal Code 87131-0001
Country USA

Contact Voice Telephone 505-277-3622 ext. 230

Contact Facsimile Telephone 505-277-3614

Contact Electronic Mail Address clearinghouse@edac.unm.edu

Hours of Service 0800 - 1700 MT, M-F -7 hours GMT

Contact Instructions

Metadata Standard Name FGDC Content Standards for Digital Geospatial Metadata

Metadata Standard Version FGDC-STD-001-1998

Metadata Time Convention

Metadata Access Constraints

Metadata Use Constraints

Metadata Security Information

Security Classification System None
Security Classification Unclassified
Security Handling Description None

Metadata Extensions

Wilcox 1:100000 Quad Transportation DLGs

Metadata from the RGIS Metadata Repository

Identification Information

Data Quality Information

Spatial Data Organization Information

Spatial Reference Information

Entity and Attribute Information

Distribution Information

Metadata Reference Information