USGS 1:24,000 DLG Roads

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: St Johns River Water Management District

Originator: U.S. Geological Survey EROS Data Center (EDC)

Publication_Date: October 2002

Publication_Time: Unknown

Title: USGS 1:24,000 DLG Roads

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Palatka, Florida

Publisher: St. Johns River Water Management District

Other_Citation_Details:

Original DLG source US Geological Survey Sioux Falls, SD 57198 USA

Online_Linkage:

Server=earth; Service=port:5150; User=gislib; Version=SDE.DEFAULT

Description:

Abstract:

The DLG/SDTS data were created by reformating DLG-O data into the SDTS standard. The SDTS transportation catagory quads that are within St Johns River Water Management District were downloaded from the USGS site and then mapjoined into a District wide coverage. This layer also includes those quads that were processed by CognoCarta GIS.

Digital line graph (DLG) data are digital representations of cartographic information. DLGs of map features are converted to digital form from maps and related sources. Large-scale DLG data are derived from USGS 1:20,000-, 1:24,000-, and 1:25,000-scale 7.5 minute topographic quadrangle maps and are available in nine categories: (1) hypsography, (2) hydrography, (3) vegetative surface cover, (4) non-vegetative features, (5) boundaries, (6) survey control and markers, (7) transportation, (8) manmade features, and (9) Public Land Survey System. All DLG Data distributed by the USGS - 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

Supplemental_Information:

There are two tiles in Northeast Florida, Edgewater and New Smyrna Beach that have both arc errors and attribute errors. When the USGS DOQQ is placed behind the arcs it cannot be determined what polygons or arcs match each other along the western part of the border of these two tiles. The explaination to this was given by the USGS as follows: "The New Smyrna Beach quad was part of the Palatka, FL NAD27->NAD83 conversion only. The Edgewater, FL quad was part of the Orlando, FL Digital Limited Update -- archived into the data base in April, 2000 When exterior edge alignment was performed on the Orlando project, the (unrevised) New Smyrna Beach hydro file was pulled from the data base and the edge flags set. Because of the edge flag change, as the Orlando project was archived into the data base, the New Smyrna Beach file was also resubmitted." Full explanation of Revision Standards can be found at: <http://rockyweb.cr.usgs.gov/nmpstds/dlgstds.html> under Part 1: Template Development and Use, Standards for 1:24,000-Scale Digital Line Graphs and Quadrangle <http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dlgqmap/1dqm0401.pdf>

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: unknown

Currentness_Reference: ground condition

Status:

Progress: In work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -82.633235

East_Bounding_Coordinate: -80.279000

North_Bounding_Coordinate: 30.879803

South_Bounding_Coordinate: 27.366069

Keywords:

Theme:

Theme_Keyword_Thesaurus: SJRWMD-GIS Metadata Thesaurus

Theme_Keyword: Digital Line Graphs (DLG)

Theme_Keyword: transportation

Theme_Keyword: roads

Theme_Keyword: major roads

Theme_Keyword: interstate highways

Theme_Keyword: state highways

Theme_Keyword: U. S. highways

Theme_Keyword: turnpikes

Theme_Keyword: local roads

Theme_Keyword: large scale

Place:

Place_Keyword_Thesaurus: SJRWMD-GIS Metadata Thesaurus

Place_Keyword: Florida

Place_Keyword: St. Johns River Water Management District

Place_Keyword: Counties

Place_Keyword: Alachua County

Place_Keyword: Baker County

Place_Keyword: Bradford County

Place_Keyword: Brevard County

Place_Keyword: Clay County

Place_Keyword: Duval County

Place_Keyword: Flagler County

Place_Keyword: Indian River County

Place_Keyword: Lake County

Place_Keyword: Marion County

Place_Keyword: Nassau County

Place_Keyword: Okeechobee County

Place_Keyword: Orange County

Place_Keyword: Osceola County

Place_Keyword: Polk County

Place_Keyword: Putnam County

Place_Keyword: Seminole County

Place_Keyword: St. Johns County

Place_Keyword: Volusia County

Access_Constraints: None

Use_Constraints:

The St. Johns River Water Management District prepares and uses information for its own purposes and this information may not be suitable for other purposes. This information is provided "as is". Further documentation of this data can be obtained by contacting: St. Johns River Water Management District, Division of Integrated Application Systems, Post Office Box 1429, Palatka, Florida, 32178-1429, (386) 329-4500.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: St. Johns River Water Management District

Contact_Position: GIS Data Manager, Information Resources Department

Contact_Address:

Address_Type: mailing address

Address: P.O Box 1429

City: Palatka

State_or_Province: FL

Postal_Code: 32178-1429

Contact_Voice_Telephone: (386) 329-4500

Contact_Electronic_Mail_Address: gis_support@sjrwmd.com

Hours_of_Service: 0800 - 1700 EST

Browse_Graphic:

Browse_Graphic_File_Name: <http://intraweb/gisdoc/cf/smms0/gifimages/sdtsdlgrds.gif>

Browse_Graphic_File_Type: GIF

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Refer to Positional_Accuracy element

Logical_Consistency_Report:

Topological requirements include: lines must begin and end at node points, 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 longitud/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: those features that are photoidentifiable on monoscopic source, supplemented with limited ancillary source, and 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.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report: For Digital Revision Status = Not Revised

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

For Hypsography, Hydrography, and Survey Control and Markers Only: For digital Revision Status = Not revised:

Lineage:

Source_Information:

Source_Scale_Denominator: 24,000

Type_of_Source_Media: stable-base material

Source_Citation_Abbreviation: map1

Source_Contribution: spatial and attribute information

Process_Step:

Process_Description:

SDTS transportation datasets were downloaded from the USGS ftp site by individual quads. On completion of the download, the quads were converted into coverages using the sdts2cov.aml provided by the USGS. Topology was checked and any corrections required were made to the quads. Inorder to mapjoin all the quads certain items required removal using the DROPITEMS command in ARC/INFO. The number of items that were dropped varied by quad only those items consistent with all quads were retained. The quads were appended together and neatlines removed. The coverage was randomly checked for edgematching and cleaned using a fuzzy tolerance of 0.5. Detailed methodology and amls used can be found under enclosures.

Process_Date: OCT 2002

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, which all resulted in a scanning/digital resolution of at least 0.001 inches. Stable base scanning process: the resulting raster data were vectorized and then attributed on an interactive editing station: paper map scanning process: the resulting raster data were vectorized and then attributed on an interactive editing station. The stable base resulting raster data were then manually digitized and attributed on an interactive editing station. The paper map resulting raster data were then manually digitized and attributed on an interactive editing station. Manually digitizing from either a stable-based copy of the graphic material or a paper map using a digitizing table to capture the digital data; attribution was performed either as the data were digitized or on an interactive editing station after the digitizing was completed. The determination of the DLG production method was based on vaious criteria, including feature density, featuer 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. The DLG data were checked for position and/or classification by one or more of the following processes: - comparing plots of the digital data to the graphic source or to the digital raster scan.

Source_Used_Citation_Abbreviation: map1

Process_Date: Unknown

Process_Step:

Process_Description:

For Digital Revision Status = Limited Update: This file has undergone limited update digital revision. Limited update revision uses monoscopic imagery and limited ancillary source with no field verification.

Source_Used_Citation_Abbreviation: DOQ1, DOQ2, DOQ3, DOQ4

Process_Date: Unknown

Process_Step:

Process_Description:

For Digital revision Status = Standard Update: This file has undergone standard update digital revision. Standard update revision uses stereoscopic imagery, with field verification.

Source_Used_Citation_Abbreviation: DOQ1, DOQ2, DOQ3, DOQ4

Process_Date: Unknown

Process_Step:

Process_Description:

Cognocarta process: Once individual tiles were downloaded from the USGS and converted into Arc Coverages using Scott Whitaker's (Mapping Division, USGS) sdts2acov.aml, the neatline was removed. Step two was to EDGEMATCH the coverages using the ARC feature class. Coverages were then MAPJOINED and BUILT to rebuild topology

Source_Used_Citation_Abbreviation: boundary

Process_Date: Unknown

Process_Step:

Process_Description: Dataset copied.

Spatial_Data_Organization_Information:

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: 396038

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Transverse Mercator

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600

Longitude_of_Central_Meridian: -81.000000

Latitude_of_Projection_Origin: 0.000000

False_Easting: 500000.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.100000

Ordinate_Resolution: 0.100000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983_HARN

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Datum_Name: National Geodetic Vertical Datum of 1929

Altitude_Resolution: 1.000000

Altitude_Distance_Units: meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Depth_System_Definition:

Depth_Datum_Name: Mean lower low water

Depth_Resolution: 1

Depth_Distance_Units: meters

Depth_Encoding_Method: Attribute values

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: GISLIB.TRANS_RDS_24K_USGS_2002

Attribute:

Attribute_Label: OBJECTID

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: ENTITY_LABEL

Attribute_Definition: transportation attribute code

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: ENTITY_DEF

Attribute_Definition: description of transportation feature and defines entity label

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: ARBITRARY_EXT

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: RELATION_TO_GROU

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: VERTICAL_RELATIO

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: OPERATIONAL_STAT

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: ACCESS_RESTRICTI

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: OLD_RAILROAD_GRA

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: WITH_RAILROAD

Attribute:

Attribute_Label: COVERED

Attribute:

Attribute_Label: HISTORICAL

Attribute:

Attribute_Label: LIMITED_ACCESS

Attribute:

Attribute_Label: PHOTOREVISED

Attribute_Definition: indicates if there has been a photo revision

Attribute:

Attribute_Label: LANES

Attribute_Definition: Number of lanes

Attribute:

Attribute_Label: ROAD_WIDTH

Attribute_Definition: width of road

Attribute:

Attribute_Label: BEST_ESTIMATE

Attribute:

Attribute_Label: FUNCTIONAL_CLASS

Attribute:

Attribute_Label: ROUTE_NUMBER

Attribute_Definition: Primary route number

Attribute:

Attribute_Label: ROUTE_NUMBER1

Attribute_Definition: Alternate or additional route number

Attribute:

Attribute_Label: ROUTE_NUMBER2

Attribute_Definition: Alternate or additional route number

Attribute:

Attribute_Label: ROUTE_NUMBER3

Attribute_Definition: Alternate or additional route number

Attribute:

Attribute_Label: ROUTE_TYPE

Attribute:

Attribute_Label: ROUTE_TYPE1

Attribute:

Attribute_Label: ROUTE_TYPE2

Attribute:

Attribute_Label: ROUTE_TYPE3

Attribute:

Attribute_Label: CARTO

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: SHAPE.LEN

Attribute_Definition: Length of feature in internal units.

Overview_Description:

Entity_and_Attribute_Overview:

DLG3 Attibute 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 1:24000-scale DLG data, the line attribute code 050 0412 has a major code (050), meaning hydrography, with a minor code (0412) meaning stream.

Entable Label coding:

Entity_label Description ----------- ---------- 1700005 Cul-de-sac 1700201 Primary route, class 1, symbol undivided 1700202 Primary route, class 1, symbol divided by centerline 1700203 Primary route, class 1, divided, lanes separated 1700204 Primary route, class 1, one-way, other than divided highway 1700205 Secondary route, class 2, symbol undivided 1700206 Secondary route, class 2, symbol divided by centerline 1700207 Secondary route, class 2, symbol divided, lanes separated 1700208 Secondary route, class 2, one-way, other than divided highway 1700209 Road, class 3, symbol undivided 1700210 Road, class 4 1700211 Trail 1700212 Road, class 5, four-wheel drive 1700213 Footbridge 1700214 Road ferry crossing 1700217 Road, class 3, symbol divided by centerline 1700218 Road, class 3, symbol divided, lanes separated 1700219 Road, class 4, one-way 1700221 Road, class 3, one-way 1700222 Road in transition 1700223 Road in service facility, rest area, or viewpoint 1700401 Traffic circle 1700402 Ramp in interchange 1700403 Tollgate 1700404 Weigh station 1700405 Nonstandard section of road

Entity_and_Attribute_Detail_Citation:

U.S. Department of the Interior, U.S. Geological Survey, 1987 Digital Line Graphs from 1:24000-Scale Maps--Data Users Guide 1; Reston, Virginia Softcopies in ASCII, Wordperfect, and PostScript Format available at: <ftp://mapping.usgs.gov/pub/ti/DLG/>. U.S. Department of the Interior, U.S. Geological Survey, 1990, Standards for Digital Line Graphs, Reston, VA, 1994.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: St. Johns River Water Management District

Contact_Position: GIS Data Manager, Information Resources Department

Contact_Address:

Address_Type: mailing address

Address: Post Office Box 1429

City: Palatka

State_or_Province: Florida

Postal_Code: 32178-1429

Country: USA

Contact_Voice_Telephone: (386) 329-4500

Contact_Electronic_Mail_Address: gis_support@sjrwmd.com

Hours_of_Service: 0800-1700 EST

Resource_Description: Downloadable Data

Distribution_Liability:

The St. Johns River Water Management District prepares and uses information for its own purposes and this information may not be suitable for other purposes. This information is provided "as is". Further documentation of this data can be obtained by contacting: St. Johns River Water Management District, Division of Integrated Application Systems, Post Office Box 1429, Palatka, Florida, 32178-1429, (386) 329-4500.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ARCE

Format_Version_Number: v8.2

Format_Specification: ARC/INFO Export Format - UNIX Compression

File_Decompression_Technique: Winzip

Transfer_Size: 119.224

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://www.sjrwmd.com>

Offline_Option:

Offline_Media: CD-ROM

Fees: $40 per CD

Ordering_Instructions:

There is no charge for downloading data from the DISTRICT web site at <http://www.sjrwmd.com>. Data can be orded on CD-ROM as instructed on the web site.

Turnaround: 10 working days

Custom_Order_Process:

1. Use the DISTRICT website: <http://www.sjrwmd.com> to download data, or 2. Call or email to organizations listed under Distributor. Spatial data are in ARC/INFO interchange formats.

Technical_Prerequisites:

Internet access / Unzip, Winzip / To import coverage: ESRI ArcInfo workstation, ArcView 3.2X Import 7.1 Utility, or ArcToolBox. / To use coverage: ESRI ArcInfo, ArcView, ArcGIS 8.2, or ArcExplorer; AutoCAD 2002 Map or Land Development Desktop.

Metadata_Reference_Information:

Metadata_Date: 20030527

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: St. Johns River Water Management District

Contact_Position: GIS Data Manager, Information Resources Department

Contact_Address:

Address_Type: mailing address

Address: Post Office Box 1429

City: Palatka

State_or_Province: Florida

Postal_Code: 32178-1429

Country: USA

Contact_Voice_Telephone: (386) 329-4500

Contact_Electronic_Mail_Address: gis_support@sjrwmd.com

Hours_of_Service: 0800-1700 EST

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile