West Virginia Statewide Digital Elevation Models

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: USGS and SAMB

Publication_Date: 2005

Title: West Virginia Statewide Digital Elevation Models

Edition: First

Geospatial_Data_Presentation_Form: SDE raster digital data

Series_Information:

Series_Name: NED

Issue_Identification: 1

Publication_Information:

Publication_Place: Rolla, MO

Publisher: U.S. Geological Survey

Online_Linkage: <http://seamless.usgs.gov>

Description:

Abstract:

"In cooperation with the U.S. Geological Survey (USGS) and West Virginia Statewide Addressing and Mapping Board (SAMB), the WV GIS Technical Center converted the vector SAMB elevation files to a raster Digital Elevation Model (DEM) for inclusion into the 1/9th arc second layer of the National Elevation Dataset (NED). The main processes were TIN generation, TIN to DEM conversion, DEM hydro enforcement, and visual inspection. Two main software applications were used to perform the conversion and editing tasks: ESRI ArcGIS software for pre-processing the elevation and hydrographic SAMB vector files, and for generating the TINs and DEMs; and Delta3D software for enforcing drainage of every DEM. ArcGIS programming scripts were utilized to automate most of the procedures required to create the TINs and DEMs. In the Delta3D software, a combination of automated scripts and manual editing routines were utilized for the drainage enforcement. The final DEMs, organized according to the USGS 7.5-minute quadrangle index, were delivered to the USGS Mid-Mapping Continent Center for certification and publication into the NED."

Purpose:

NED data serve a wide variety of purposes from interim mapping to recording land use information.

Supplemental_Information:

The data obtained through The Seamless Server is considered to be the "best available" data from USGS. Historical data and other data may be obtained by contacting Customer Services, Center for Earth Observation & Science, at 1-800-252-4547. Information in quotation marks is taken directly from original metadata.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2003

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate:-81.60511831275716

East_Bounding_Coordinate:-81.60506831275715

North_Bounding_Coordinate:37.84077549916162

South_Bounding_Coordinate:37.84072549916162

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: elevation

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Category

Theme_Keyword: imageryBaseMapsEarthCover

Theme_Keyword: geoscientificInformation

Theme_Keyword: location

Theme_Keyword: elevation

Place:

Place_Keyword_Thesaurus:

U.S. Department of Commerce, 1995, Countries, dependencies, areas of special sovereignty, and their principal administrative divisions, Federal Information Processing Standard 10-4,): Washington, D.C., National Institute of Standards and Technology

Place_Keyword: United States

Place_Keyword: U.S.

Place_Keyword: US

Place:

Place_Keyword_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

Place_Keyword: WV

Access_Constraints: None.

Use_Constraints:

There is no guarantee of warranty concerning the accuracy of the data. Users should be aware that temporal changes may have occurred since this data set was collected and that some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to <http://www.usgs.gov/privacy.html> for the USGS disclaimer.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Position: Customer Services Representative

Contact_Address:

Address_Type: mailing and physical address

Address: USGS Center for Earth Resources Observation & Science

Address: 47914 252nd Street

City: Sioux Falls

State_or_Province: SD

Postal_Code: 57198-0001

Country: USA

Contact_Voice_Telephone: 605/594-6151

Contact_Voice_Telephone: 1-800-252-4547

Contact_TDD/TTY_Telephone: 605/594-6933

Contact_Facsimile_Telephone: 605/594-6589

Contact_Electronic_Mail_Address: custserv@usgs.gov

Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)

Contact_Instructions:

The point of contact is for questions related to download from this site. For questions on the original processing of the data, please contact the West Virginia Statewide Addressing and Mapping Board (SAMB)

Data_Set_Credit:

U.S. Geological Survey (USGS) and West Virginia Statewide Addressing and Mapping Board (SAMB)

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Not provided

Logical_Consistency_Report: None

Completeness_Report: Complete

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Enhanced digital terrain model data (point and breakline) support topographically correct 10-foot contour intervals required to meet ASPRS Class II accuracies. This accuracy correlates to a raster DEM cell size (post spacing) of 5 meters.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 5

Horizontal_Positional_Accuracy_Explanation: meters

Vertical_Positional_Accuracy:

Vertical_Positional_Accuracy_Report:

10-foot contour intervals required to meet ASPRS Class II accuracies.

Quantitative_Vertical_Positional_Accuracy_Assessment:

Vertical_Positional_Accuracy_Value: 10

Vertical_Positional_Accuracy_Explanation: feet

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS

Publication_Date: 2005

Title: Digital Elevation Model

Edition: 1

Geospatial_Data_Presentation_Form: digital

Series_Information:

Series_Name: NED

Issue_Identification: 1

Publication_Information:

Publication_Place: Rolla, MO

Publisher: USGS

Larger_Work_Citation:

Citation_Information:

Originator: USGS

Publication_Date: 2003

Title: NED

Edition: 1

Geospatial_Data_Presentation_Form: raster digital data

Series_Information:

Series_Name: DEM

Issue_Identification: 1

Publication_Information:

Publication_Place: Rolla, MO

Publisher: USGS

Source_Scale_Denominator: 24000

Type_of_Source_Media: digital tape media

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2005

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: DEM

Source_Contribution:

Digital Elevation Model Format: hydro enforced, edge matched, UTM Zone 17 North Coordinate System, horizontal datum NAD83, vertical datum NAVD88, map units in meters, vertical units in decimal feet.

Process_Step:

Process_Description:

"In cooperation with the U.S. Geological Survey (USGS) and West Virginia Statewide Addressing and Mapping Board (SAMB), the WV GIS Technical Center converted the vector SAMB elevation files to a raster Digital Elevation Model (DEM) for inclusion into the 1/9th arc second layer of the National Elevation Dataset (NED). The main processes were TIN generation, TIN to DEM conversion, DEM hydro enforcement, and visual inspection. Two main software applications were used to perform the conversion and editing tasks: ESRI ArcGIS software for pre-processing the elevation and hydrographic SAMB vector files, and for generating the TINs and DEMs; and Delta3D software for enforcing drainage of every DEM. ArcGIS programming scripts were utilized to automate most of the procedures required to create the TINs and DEMs. In the Delta3D software, a combination of automated scripts and manual editing routines were utilized for the drainage enforcement. The final DEMs, organized according to the USGS 7.5-minute quadrangle index, were delivered to the USGS Mid-Mapping Continent Center for certification and publication into the NED.

Specifications

1) Source Data Format: Microstation mass points, breaklines, and polygons for both elevation and hydrographic features. 2) Imagery source date: Spring 2003 3) Accuracy: Enhanced digital terrain model data (point and breakline) support topographically correct 10-foot contour intervals required to meet ASPRS Class II accuracies. This accuracy correlates to a raster DEM cell size (post spacing) of 5 meters. 4) NED Resolution: 3-meter horizontal, 0.1-foot vertical 5) Digital Elevation Model Format: hydro enforced, edge matched, UTM Zone 17 North Coordinate System, horizontal datum NAD83, vertical datum NAVD88, map units in meters, vertical units in decimal feet. 6) Mapping Unit: USGS 7.5-minute quadrangle."

Process_Date: 2005

Process_Step:

Process_Description:

"The grid data provided by WV SAMB was processed by USGS/EROS . The DEM formatted file was converted to a ESRI GRID in geographic coordinates using the assemble software with a cell size of 1/9 decimal degree. These grids were visually inspected for erroneous grid cells, and if necessary, the process was repeated to remove all erroneous points. During this processing a shpaefile of the data footprint was produced. A shaded relief grid with an azimuth of 315, elevation of 45 and a z-factor of 0.00003 was produced for additional QC and for viewing with the Seamless Data Distribution System. When the QC was completed the grids were loaded into ArcSDE with ArcGIS 9.1 ArcCatalog."

Process_Date: 20051207

Process_Step:

Process_Description:

The original metadata were imported and updated for display through the Seamless Data Distribution System.

Process_Date: 2006

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Raster

Raster_Object_Information:

Raster_Object_Type: Pixel

Row_Count: 48557

Column_Count: 97101

Vertical_Count: 1

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

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: North American Vertical Datum of 1988

Altitude_Resolution: 1.000000

Altitude_Distance_Units: meters

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview: Not provided

Entity_and_Attribute_Detail_Citation: Not provided

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Position: Customer Services Representative

Contact_Address:

Address_Type: mailing and physical address

Address: USGS Center for Earth Resources Observation & Science

Address: 47914 252nd Street

City: Sioux Falls

State_or_Province: SD

Postal_Code: 57198-0001

Country: USA

Contact_Voice_Telephone: 605/594-6151

Contact_Voice_Telephone: 1-800-252-4547

Contact_TDD/TTY_Telephone: 605/594-6933

Contact_Facsimile_Telephone: 605/594-6589

Contact_Electronic_Mail_Address: custserv@usgs.gov

Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)

Contact_Instructions:

The USGS point of contact is for questions relating only to the data display and download from this web site. For questions regarding data content and quality, refer to the WV GIS Technical Center.

Resource_Description: Downloadable Data

Distribution_Liability:

Although these data have been processed successfully on a computer system at the USGS, no warranty expressed or implied is made by the USGS regarding the use of the data on any other system, nor does the act of distribution constitute any such warranty. Data may have been compiled from various outside sources. Spatial information may not meet National Map Accuracy Standards. This information may be updated without notification. The USGS shall not be liable for any activity involving these data, installation, fitness of the data for a particular purpose, its use, or analyses results.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: Arc/Info Export Format and/or ArcView Shapefile

Format_Version_Number: ArcGIS 9.1

Format_Specification: ASCII

Transfer_Size: 0.001

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://seamless.usgs.gov>

Access_Instructions:

The URL <http://seamless.usgs.gov/> provides a map interface that allows for data downloads within a customer defined area of interest. Zoom tools are available that can be used to investigate areas of interest on the map interface. The download tool allows the customer to capture layers from the map, utilizing the Seamless Data Distribution System process for downloading. A request summary page is then generated with the download layers listed. By clicking the "download" button on the summary page, a zipped file will be generated that can be saved on the customer's computer. The file can then be unzipped and imported into various user software applications.

Online_Computer_and_Operating_System: Not available for dissemination

Fees: None

Turnaround: Variable

Technical_Prerequisites:

ESRI ArcGIS Suite and/or Arc/Info or other compatible software, and supporting operating systems.

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: unknown

Metadata_Reference_Information:

Metadata_Date: 20060203

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Position: Customer Services Representative

Contact_Address:

Address_Type: mailing and physical address

Address: USGS Center for Earth Resources Observation & Science

Address: 47914 252nd Street

City: Sioux Falls

State_or_Province: SD

Postal_Code: 57198-0001

Country: USA

Contact_Voice_Telephone: 605/594-6151

Contact_Voice_Telephone: 1-800-252-4547

Contact_TDD/TTY_Telephone: 605/594-6933

Contact_Facsimile_Telephone: 605/594-6589

Contact_Electronic_Mail_Address: custserv@usgs.gov

Hours_of_Service: 0800 - 1600 CT, M - F (-6h CST/-5h CDT GMT)

Contact_Instructions:

The above is the contact information for the USGS Center for Earth Resources Observation and Science in Sioux Falls, SD. This is the digital data storage and distribution center for the USGS. Metadata information can also be obtained through online services using The National Map Viewer, at <http://nationalmap.usgs.gov>

For questions on the original processing of the data, please contact the West Virginia Statewide Addressing and Mapping Board (SAMB)

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints: None

Metadata_Security_Information:

Metadata_Security_Classification_System: None

Metadata_Security_Classification: Unclassified

Metadata_Security_Handling_Description: None

Metadata_Extensions:

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

Profile_Name: ESRI Metadata Profile