ElevationContours_CN100T

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: GIS Database Administrator
Publication_Date: 20021009
Publication_Time: unknown
Title: ElevationContours_CN100T
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: 100 foot contours generated from USGS 7.5 minute NED data
Issue_Identification: 1.0
Publication_Information:
Publication_Place: Waterbury VT 05676
Publisher: GIS Database Administrator
Other_Citation_Details: Tile Structure - STATE
Description:
Abstract:
This data layers consists of 100 foot contours intervals interpolated from the USGS NED. USGS NED (National Elevation Dataset) data are described in the documentation for data layer ElevationDEM_DEM24. More information about the NED can be accessed by going to <http://ned.usgs.gov>
Purpose: 100 foot contours generated from USGS 7.5 minute NED data
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Various
Time_of_Day: Unknown
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.454162
East_Bounding_Coordinate: -71.465281
North_Bounding_Coordinate: 45.018361
South_Bounding_Coordinate: 42.722789
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: 100 foot contours generated from USGS 7.5 minute NED data
Theme_Keyword: 100 foot contours
Theme_Keyword: usgs dtm data
Theme_Keyword: contours
Theme_Keyword: dtm data
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: vermont
Access_Constraints:
VCGI and the State of VT make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Use_Constraints: No thorough assessment of feature accuracy has been done.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr, Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: VT
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/828-3383
Contact_Electronic_Mail_Address: vcgi@vermont.gov
Hours_of_Service: 9am - 5pm, M-F
Security_Information:
Security_Classification_System: N/A
Security_Classification: Unclassified
Security_Handling_Description: No Security Considerations
Native_Data_Set_Environment: ARC/INFO
Cross_Reference:
Citation_Information:
Originator: GIS Database Administrator
Publication_Date: unknown
Publication_Time: unknown
Title: USGS National Elevation Dataset (NED) 7.5' DEM
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Waterbury VT 05676
Publisher: GIS Database Administrator
Other_Citation_Details: ElevationDEM_DEM24
Online_Linkage: <http://vcgi.vermont.gov>
Data_Quality_Information:
Logical_Consistency_Report:
The quality of these contour data have not been formally assessed. They may not line up well with surface waters data, particularly in flat areas. Data users may need to CLIP out extraneous contour lines across lakes. Near lakes, contour lines may improperly cross from land onto the lake. Around Lake Champlain, this can be avoided in part by not drawing the 100 foot contour line (the lake is at about 95').
Completeness_Report:
100-foot contour lines were generated from 7.5 minute USGS NED data with the ARC/INFO TIN module. The ArcInfo workstation LATTICECONTOUR command was used. The ElevationDEM_DEM24 GRID (lattice) was used as the input grid/lattice. The process created a statewide 50 foot contour coverage. The latticecontour command was preferred for efficiency, but may produce some contours with "stair-stepping" (particularly in flat areas). The TINCONTOUR command (with subdivided triangles) might have produced slightly more pleasing contours, but was too compute intensive when using all DEM points. BoundaryTile_QUAD16 tiled versions we created for download by clipping the statewide ElevationContours_CN100T coverage.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
No formal assessment has been made of the accuracy of contour lines interpolated from 7.5 minute NED data in Vermont. Limited experience has shown that the generated contours compare well with USGS 7.5 minute topographic maps in areas of steep topography. In relatively flat areas, however, interpolated contours may differ from 7.5 minute topographic map contours by as much as a couple of inches at RF 24,000 scale (2000 feet on the ground). The USGS topographic maps are stated to meet National Map Accuracy Standards. Data users may want to compare the contour data for their area with topographic maps to assess the data's usefulness for any particular purpose.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: GIS Database Administrator
Publication_Date: 20021009
Publication_Time: unknown
Title: 100 foot contours generated from USGS 7.5 NED data
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Waterbury VT 05676
Publisher: GIS Database Administrator
Other_Citation_Details: ElevationContours_CN100T
Online_Linkage: <http://vcgi.vermont.gov>
Source_Scale_Denominator: 250000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Unknown
Time_of_Day: Unknown
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: USGS topos
Source_Contribution: VCGI and USGS
Process_Step:
Process_Description:
Original data available for distribution. Operator - Steve Bower, VCGI
Process_Date: 19930408
Process_Time: Unknown
Process_Step:
Process_Description:
Regenerated entire data set using ElevationDEM_DEM24. Generated as a statewide layer, then clipped to BoundaryTile_QUAD16 for download. Loaded into ArcSDE. Operator: Steve Sharp, VCGI.
Process_Date: 20021009
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: LINE
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: LINE
Point_and_Vector_Object_Count: varies by coverage
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4400 (USGS), 5526 (ESRI)
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99996
Longitude_of_Central_Meridian: -072.500000
Latitude_of_Projection_Origin: +42.500000
False_Easting: 500,000
False_Northing: 0.000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 1 / 298.25722210
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Line
Entity_Type_Definition: Linear 1-D representation
Entity_Type_Definition_Source: VCGI
Attribute:
Attribute_Label: CONTOUR
Attribute_Definition:
Contour value in feet Type (N), Width (4), Decimals (0)
Attribute_Definition_Source: LATTICECONTOUR command
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CONTOUR
Enumerated_Domain_Value_Definition: Contour value in feet
Enumerated_Domain_Value_Definition_Source: LATTICECONTOUR command
Attribute:
Attribute_Label: CNRES
Attribute_Definition:
Contour resolution Type (I), Width (1), Decimals (0)
Attribute_Definition_Source: VCGI
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: CNRES
Enumerated_Domain_Value_Definition: Contour resolution
Enumerated_Domain_Value_Definition_Source: VCGI
Attribute_Value_Accuracy_Information:
Attribute_Value_Accuracy: CNRES
Attribute_Value_Accuracy_Explanation:
CNRES can be used to easily plot selected contours, as follows - (the CNRES is listed first followed by the selected contours) (0 or greater) 50' all contours, (1 or greater) 100' contours, (2 or greater) 200' contours, (4 or greater) 400' contours
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr, Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: VT
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/828-3383
Contact_Electronic_Mail_Address: vcgi@vermont.gov
Hours_of_Service: 9am - 5pm, M-F
Resource_Description: ElevationContours_CN100T
Distribution_Liability:
VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Specification: ESRI Shapefile format (compressed to ZIP format)
Format_Information_Content: geospatial data
File_Decompression_Technique: ZIP decompression software
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://maps.vcgi.vermont.gov/gisdata/vcgi/packaged_zips/ElevationContours_CN100T.zip>
Access_Instructions: Download from web site.
Offline_Option:
Offline_Media: USB drive
Fees:
No charge when downloading from the internet, and when no custom processing is required.
Ordering_Instructions: Send an email describing data request to vcgi@vermont.gov
Turnaround: About 5 days.
Custom_Order_Process: Send an email describing data request to vcgi@vermont.gov
Technical_Prerequisites: GIS Software
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20001023
Time_of_Day: Unknown
Metadata_Reference_Information:
Metadata_Date: 20021009
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Person: GIS Database Administrator
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr, Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: VT
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone: 802/828-3383
Metadata_Standard_Name: FGDC Content Standards for Digital 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: N/A
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: No security considerations
Generated by mp version 2.9.22 on Thu May 25 13:20:42 2023