WaterHydro

WaterHydro_DLGSW

Metadata also available as

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: GIS Database Administrator

Publication_Date: 19920101

Publication_Time: unknown

Title: WaterHydro_DLGSW

Edition: 1.0

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: DLG Surface Waters
Issue_Identification: 1.0

Publication_Information:

Publication_Place: Waterbury, VT 05676
Publisher: GIS Database Administrator

Other_Citation_Details: Tile Structure - STATE

Online_Linkage: <http://www.vcgi.org/dataware/default.cfm?layer=WaterHydro_DLGSW>

Online_Linkage:

<http://www.vcgi.org/dataware/default.cfm?layer=WaterHydro_DLGSW&mapit=yes>

Online_Linkage:

<http://maps.vcgi.org:8080/wmsconnector/com.esri.wms.Esrimap?servicename=DATAWARE_VCGI&VERSION=1.1.1&request=getmap&BBOX=-73.45416,42.72279,-71.46528,45.018356&SRS=EPSG:4326&LAYERS=WATER_DLGSW_POLY&WIDTH=300&HEIGHT=400&FORMAT=image/gif>

Online_Linkage:

Description:

Abstract:: The WaterHydro_DLGSW layer represents surface waters (hydrography) at a scale of RF 100000. WaterHydro_DLGSW was derived from RF100000 USGS Digital Line Graph (DLG). DLG's of map features are converted to digital form from maps and related sources. Refer to the USGS web site from more information on DLGs (<http://www.usgs.gov>)
Purpose:: Provide intermediate scale surface water (hydrography) data for Vermont.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19870619
Ending_Date: Present

Currentness_Reference: publication date

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None

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: inlandWaters

Theme:

Theme_Keyword_Thesaurus: None
Theme_Keyword: digital line graph
Theme_Keyword: DLG
Theme_Keyword: hydrography

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: None.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: VT Center for Geographic Information

Contact_Address:

Address_Type: Mailing and Physical Address
Address: 58 South Main Street, Suite 2
City: Waterbury
State_or_Province: VT
Postal_Code: 05676
Country: USA

Contact_Voice_Telephone: 802/882-3000

Contact_TDD/TTY_Telephone: None

Contact_Facsimile_Telephone: 802/882-3001

Contact_Electronic_Mail_Address: info@vcgi.org

Hours_of_Service: 9am - 5pm, M-F

Browse_Graphic:

Browse_Graphic_File_Name:: <http://maps.vcgi.org:8080/wmsconnector/com.esri.wms.Esrimap?servicename=DATAWARE_VCGI&VERSION=1.1.1&request=getmap&BBOX=-73.45416,42.72279,-71.46528,45.018356&SRS=EPSG:4326&LAYERS=WATER_DLGSW_POLY&WIDTH=300&HEIGHT=400&FORMAT=image/gif>
Browse_Graphic_File_Name:: <http://maps.vcgi.org:8080/wmsconnector/com.esri.wms.Esrimap?servicename=DATAWARE_VCGI&VERSION=1.1.1&request=getmap&BBOX=-73.45416,42.72279,-71.46528,45.018356&SRS=EPSG:4326&LAYERS=WATER_DLGSW_LINE&WIDTH=300&HEIGHT=400&FORMAT=image/gif>
Browse_Graphic_File_Description: GIF
Browse_Graphic_File_Type: GIF

Data_Set_Credit: VTrans and VCGI

Security_Information:

Security_Classification_System: N/A
Security_Classification: Unclassified
Security_Handling_Description: No Security Considerations

Native_Data_Set_Environment: Arc/Info

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: All WaterHydro_DLGSW attributes were derived from the source DLG files.

Logical_Consistency_Report:

USGS DLG 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.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:: Consistent with U.S. National Map Accuraccy standard for RF 100000 data.

Vertical_Positional_Accuracy:

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

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

Publication_Date: Various

Publication_Time: Various

Title: Intermediate scale USGS topographic maps (DLG RF 100000)

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Reston, Virginia
Publisher: U.S. Geological Survey

Source_Scale_Denominator: 100000

Type_of_Source_Media: stable-based material

Source_Time_Period_of_Content:

Time_Period_Information:
Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: DLG RF 100000

Source_Contribution: spatial and attribute information

Process_Step:

Process_Description:: WaterHydro_DLGSW was derived from RF 100000 USGS DLG files using the ARCINFO DLGARC command.
The original DLG files were derived from the USGS source quadrangle at RF 100000 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.
The determination of the DLG production method was based on various criteria, including feature density, feature symbology, and avialability 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.

Process_Step:

Process_Description:

VCGI combined WaterHydro_DLGSW data (formerly tiled by DLG) into a single statewide coverage. UNSPLIT to remove pseudo nodes. Clipped to VT boundary with 4000 meter buffer. Data has problems, but VCGI made no attempt to resolve them since users can utilize VT's master surface water data instead (WaterHydro_VHD). Steve Sharp, VCGI

Process_Date: 20020916

Process_Time: Unknown

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Steve Sharp
Contact_Organization: VCGI

Contact_Position: GIS Database Administrator

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: Point
Point_and_Vector_Object_Count: 266

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 442

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 442

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 64

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

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999964
Longitude_of_Central_Meridian: -72.500000
False_Easting: 500000.000000
False_Northing: 0.000000

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: DLGSW.AAT and DLGSW.AAT
Entity_Type_Definition: Polygon and Arc Attribute Tables
Entity_Type_Definition_Source: RF 100000 DLG files

Attribute:

Attribute_Label: MAJ1

Attribute_Definition: Major Code 1