WaterHydro_WBD8VT

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service, USGS, U.S. EPA, federal/state/local partners.
Publication_Date: 20140103
Publication_Time: Unknown
Title: WaterHydro_WBD8VT
Edition: 2016
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: VT Subbasin boundaries (HUC8)
Issue_Identification: 2016
Publication_Information:
Publication_Place: Colchester, Vermont
Publisher: Natural Resources Conservation Service
Other_Citation_Details: Tile Structure - NONE
Description:
Abstract:
WaterHydro_WBD8VT includes Subbasins within Vermont (HUC8 level hydrologic unit boundaries). The boundaries are consistent with Vermont's Hydrography Dataset (VHD).
Purpose:
Represent defined subbasins (HUC8 level hydrologic unit boundaries) in Vermont.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1980
Ending_Date: 2016
Currentness_Reference: Publication date of sources
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.159492
East_Bounding_Coordinate: -70.803440
North_Bounding_Coordinate: 46.123326
South_Bounding_Coordinate: 42.076343
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: inlandWaters
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: HUC
Theme_Keyword: Hydrologic Units
Theme_Keyword: Watershed Boundaries
Theme_Keyword: Subwatershed Boundaries
Theme_Keyword: WBD
Theme_Keyword: Hydrologic Unit Boundaries
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: VT
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:
The distributor shall not be held liable for improper or incorrect use of this data, based on the description of appropriate or inappropriate uses described in this metadata document. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations in Vermont. The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data. The Vermont Watershed Boundary Dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application of the data. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions they make. The Natural Resources Conservation Service will not perform any evaluations of these maps or purposes related solely to State or local regulatory programs. Photographic or digital enlargement of these maps to scales greater than that at which they were originally delineated can result in misrepresentation of the data. If enlarged, the maps will not include the fine detail that would be appropriate for mapping at the small scale. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data from the source distributor.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Agriculture, Natural Resources Conservation Service
Contact_Person: Robert Kort
Contact_Position: Hydrologist
Contact_Address:
Address_Type: mailing address
Address: 356 Mountain View Drive, Suite 105
City: Colchester
State_or_Province: VT
Postal_Code: 05446
Contact_Voice_Telephone: (802) 951-6795
Contact_Facsimile_Telephone: (802) 951-6327
Contact_Electronic_Mail_Address: bob.kort@vt.usda.gov
Hours_of_Service: 8:00-4:30
Contact_Instructions: Please email questions and requests.
Data_Set_Credit:
Funding for the Vermont Watershed Boundary Dataset (WBD) was provided by the U.S. Department of Agriculture, Natural Resource Conservation Service (NRCS). Representatives of the US Geological Survey (USGS) contributed a substantial amount of time and salary towards quality review and update of the dataset.
Security_Information:
Security_Classification_System: n/a
Security_Classification: Unclassified
Security_Handling_Description: n/a
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.1.3143
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The accuracy of this data is dependent on the level of detail of the source material and the interpretation procedures for capturing that source. The primary limiting factor for the level of detail of the source is the scale (1:24,000) of the enhanced digital raster graphic (DRG-E). The map scale determines the level of content that may be extracted from the given source during digitization. (1) 60% of the boundary locations were visually verified using enhanced digital raster graphics (DRG-E) as a reference. Occasionally (<5%) local knowledge was used to verify boundary locations or digital orthophoto quads of the area were reviewed. (2) 100% of the huc_12, huc_10 and huc_8 values were verified visually for accuracy. (3) 100% of all other attributes were visually checked and compared with those of surrounding subwatersheds.(4) The hu_10_mod and hu_12_mod attributes were visually verified for accuracy of interbasin transfers during the semi-automated attribution process. Dam locations were identified by overlaying the National Inventory of Dams as a points layer.
Logical_Consistency_Report:
There are no unclosed polygons, intersections without nodes, or polygons without labels or with more than one label. ArcInfo topological checking programs CLEAN, INTERSECTERR, LABELERRORS, and NODEERRORS were used to correct intersections without nodes, identify unclosed polygons and remove duplicate lines with the same beginning and ending nodes. All sliver polygons were removed.
Completeness_Report:
All fields for all polygons in the .pat are attributed. Some polygons in the Ncontrb_a field might have a 0 value. All fields for the lines in the .aat are attributed. The WBD was produced using Enhanced Digital Raster Graphics (DRG-Es) digital images as source map. Data completeness for DRG files reflect content of the source graphic and may therefore be reflected in the completeness and accuracy of the WBD.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The map was digitized from USGS 1:24,000-scale quadrangle base maps, with an inherited error of +/- 40 feet according to USGS National Map Accuracy Standards. It is estimated that the errors detected were less than 10%. It should be noted that while general rules of hydrology were used (i.e. water flows downhill), the location of boundaries is still somewhat subjective as the 1:24,000-scale quadrangles do not always provide enough information for identifying the location of the boundaries. In some of these instances, further investigation and discussion with local authorities, engineers and others cleared up discrepancies. Please refer to the methods section for more details on watershed delineation rules. It should be noted that the data was digitized using NAD27 horizontal datum as that is the native datum of the quadrangles and of digital raster geographics (DRG). The data was then projected to NAD83 horizontal datum as requested for NRCS review and archival. If the Vermont data is reprojected to nad83 and overlaid on the DRG-Es with the NAD83 DRG-Es it can be assumed that the boundaries will be off by less than 2 meters. As with the original DRGs, DRG-E is cast in the Universal Transverse Mercator projection and is referenced to the NAD27 datum.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: N/A
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Beartooth Mapping, Red Lodge MT
Publication_Date: 1999
Title: Enhanced Digital Raster Graphic
Edition: 1
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage: www.beartoothmaps.com
Source_Scale_Denominator: 24
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: unknown
Source_Currentness_Reference: map delineation
Source_Citation_Abbreviation: DRG-E
Source_Contribution:
The DRG-Es are the digital representation of the USGS 7.5min quadrangles. They were used as a backdrop to do on-screen digitizing of the watershed boundaries at 1:24k scale
Source_Information:
Source_Citation:
Citation_Information:
Originator: USDA-Natural Resources Conservation Service
Publication_Date: 20010601
Title: Level 6 Hydrologic Units for Massachusetts
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: https://www.nrcs.usda.gov/
Source_Scale_Denominator: 24
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2001
Source_Currentness_Reference: map delineation
Source_Citation_Abbreviation: WBD-MA
Source_Contribution: Watershed delineation at state boundary
Source_Information:
Source_Citation:
Citation_Information:
Originator: USDA-Natural Resources Conservation Service
Publication_Date: 20020301
Title: Level 6 Hydrologic Units for New Hampshire
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: https://www.nrcs.usda.gov/
Source_Scale_Denominator: 24
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2002
Source_Currentness_Reference: map delineation
Source_Citation_Abbreviation: WBD-NH
Source_Contribution: Watershed delineation at state boundary
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: Unpublished material
Title: HUCS for NRCS
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Source_Scale_Denominator: 24
Type_of_Source_Media: vector digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: map delineation
Source_Citation_Abbreviation: HUCS4NRCS
Source_Contribution:
Watershed delineation in the Lake Champlain Basin on the New York side.
Process_Step:
Process_Description:
Arcs digitized for watersheds and subwatersheds from paper 1:24,000 USGS topographic quadrangles obtained from the Vermont Center for Geographic Information (VCGI). Not all watersheds or subbasins (cataloguing units) were drawn on these maps. They provided a basis from which to start the digital map. Watershed boundary lines were digitized on a CalComp 9500 digitizing tablet at the UVM Spatial Analysis Lab. RMS error was kept below 0.006. Log sheets were kept, with date, tics, RMS error, etc.
Process_Date: 1994
Process_Step:
Process_Description:
Map delineation on paper topographic quads. The USDA NRCS was primarily responsible for designating the size and subdivision (e.g. location of subdivision points on the stream: of the major watersheds based on the project goals. The NRCS map which was to be corrected and subdivided further was the published hard copy map, "Hydrologic Unit Map - 1981", based on the source data U.S.G.S. 1:500,000 base map. The map contained only 8- and 11-digit watershed lines.
Process_Date: 1995
Process_Step:
Process_Description:
Obtained arcs digitized by Vermont Center for Geographic Information (VCGI) in a coverage called VTBASHU11. All arcs from this coverage were originally labeled 'VCGI' in an item called SOURCE, but some were deleted or replaced. Project constraints did not allow checking of every arc from this coverage, but those that were checked and proved to be incorrect were corrected.
Process_Date: 1996
Process_Step:
Process_Description:
Bob Hammond, of USGS in Pembroke, NH, reviewed all watershed and subbasin lines, making some minor changes. USGS did not check the subwatershed lines.
Process_Date: 1996
Process_Step:
Process_Description:
Refined the sizes and subdivisions of watersheds into subwatersheds. Decisions were based on the following: a. NRCS National Instruction 170-304: Guidelines for Mapping and Digizing Hydrologic Units. b. Input from NRCS Field Offices to proposed delineations. c. State of Vermont River Basins with Surface Water Bodies: Watershed Boundaries and Names. Similar watershed boundaries and names were adopted where feasible to coordinate with the State Agency of Natural Resources. d. Correction of errors in the existing 11-digit hydrologic units.
Process_Date: 1998
Process_Step:
Process_Description:
Reviewed available maps of hydrologic units for New Hampshire, New York and Massachusetts. Revised some existing arcs to match.
Process_Date: 1999
Process_Step:
Process_Description:
Used ArcEdit to do heads-up digitizing of Quebec areas north of the Vermont border with Canadian DRGs at 1:50,000 scale as backdrop.
Process_Date: 2000
Process_Step:
Process_Description:
Redelineation of entire subbasins onscreen with DRG-Es: entire Connecticut River drainage area, including New Hampshire portion. USGS NHD and WBD Coordinators asked that we meet the standard so that subbasins, watersheds and subwatersheds each have a single pour point. All of the CT River Vermont-side subwatersheds ended in the middle of the river, so these were completely re-drawn, using existing arcs where possible. Lake Champlain subbasins were similarly corrected.
Process_Date: 2000
Process_Step:
Process_Description:
Edited attributes to meet revised Hydrologic Unit Digitizing Standard.
Process_Date: 2002
Process_Step:
Process_Description:
Corrections to Lake Champlain delineations based upon error reports from USGS WRD in Pembroke, NH. These error reports came from NHD pre-conflation comparisons with Subbasin boundaries.
Process_Date: 2002
Process_Step:
Process_Description:
VCGI acquired latest version of WBD from NRCS-VT Nov. 2003, reprojected to VCS NAD83 and modified metadata to reflect changes made to HUC10 & HUC12 attributes for Lake Carmi subwatershed before loading into VGIS Data Warehouse. Did not use latest version from NRCS website as they have yet to remediate the Lake Carmi error. Data flagged as a preliminary release since there are areas in NY with no HUC12 boundaries yet delineated.
Process_Date: 20040226
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mike Brouillette
Contact_Organization: VCGI
Process_Step:
Process_Description:
META_ID: VT02; Corrections to data; USGS Water Science Center, Salt Lake City.
Process_Date: 200903
Process_Step:
Process_Description:
META_ID: VT03; USGS Salt Lake City: update to data in Lake Champlain area on the US side.
Process_Date: 201005
Process_Step:
Process_Description:
META_ID: VT04; USGS Salt Lake City: update to data in Lake Champlain area on the Canadian side. All lines within Canada are draft delineations only. These boundaries were based on Canada's 1:50,000 National Hydrography Network Work Units or were delineated using either 1:50,000 scale topos or CDED elevation data.These boundaries have not been fully reviewed or approved by either the Canadian federal or provincial agencies and are subject to change. Border polygons are based off of these internal boundaries within Canada and so are also subject to change within Canada.
Process_Date: 201005
Process_Step:
Process_Description: Process_Date 201006
Process_Step:
Process_Description:
Meta_ID: VT06; USGS, Water Science Center, Salt Lake City; Kimberly Jones. Edits to Lake Champlain Basin moving it from Region 02 to Region 04. Also updated 01110000 from Region 01 to Region 04. Craig Johnston pointed out that this unit contains the St. Francois River which flows up into Canada and then dumps into the St Lawrence River. Region 01 is Maine Coastal drainage's while region 04 is St. Lawrence drainage's, so this unit really belongs in region 04.
Source_Used_Citation_Abbreviation:
Process_Date: 201011
Process_Step:
Process_Description:
Meta_ID: VT07; USGS Water Science Center in Salt Lake City, Utah:
Changes to the linework and the polys; updated the linework and the corresponding polygons, as well as the linesource codes, and downstream codes where applicable. Updated coding where applicable for new subbasins.
Source_Used_Citation_Abbreviation:
Process_Date: 201201
Process_Step:
Process_Description:
VCGI acquired latest version of WBD from "<ftp://nhdftp.usgs.gov/DataSets/Staged/States/FileGDB/HighResolution/>" dated Sept. 2013, reprojected to VCS NAD83 and modified metadata to reflect latest attributes before loading into VGIS Data Warehouse. Deleted attributes: MetaSourceID, SourceDataDesc, SourceOriginator and SourceFeatureID as they were blank.
Process_Date: 20140102
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mike Brouillette
Contact_Organization: VCGI
Process_Step:
Process_Description: Posted the dataset to the VCGI Open Data Warehouse.
Process_Date: 20140710
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ivan Brown
Contact_Organization: VCGI
Process_Step:
Process_Description:
Downloaded new data from https://www.usgs.gov/national-hydrography/access-national-hydrography-products on 2023-09-13. Selected Vermont polygons, projected those polygons from NAD83 GCS to VT SPCS NAD83 meters, and loaded those polygons to this layer.
Process_Date: 20230915
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Ivan Brown
Contact_Organization: VCGI
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count:
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
Latitude_of_Projection_Origin: 42.500000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.003340
Ordinate_Resolution: 0.003340
Planar_Distance_Units: meters
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
Entity_and_Attribute_Information:
Detailed_Description:
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: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: TNMID
Attribute_Definition: Unique Identifier from NRCS GeoSpatial Data Gateway (?).
Attribute:
Attribute_Label: LoadDate
Attribute_Definition: Date data loaded by NRCS (?).
Attribute:
Attribute_Label: GNIS_ID
Attribute_Definition:
Geographic Names Information System (GNIS) unique identifier (ID).
Attribute_Definition_Source: NA
Attribute:
Attribute_Label: AreaAcres
Attribute_Definition: Area of feature in acres.
Attribute_Definition_Source: NRCS
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: AreaSqKm
Attribute_Definition: Area of feature in square kilometers.
Attribute_Definition_Source: NRCS
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: States
Attribute_Definition:
The "States" field includes the names of all state(s) that the subwatershed falls within using the 2-digit postal abbreviation in upper case and sorted by state(s) in alphabetical order and separated with a comma with no space after the comma.
Attribute:
Attribute_Label: HUC_8
Attribute_Definition:
A unique 8-digit code from the USGS map series "Hydrologic Unit Maps". Use the existing code for the sub-basin where the subwatershed resides; do not change this code. The same number should be used in every record that pertains to a subwatershed that resides within the same 8-digit sub-basin.Numbers were assigned in an upstream to downstream fashion. Where no downstream/upstream relationship could be determined numbers were assigned in a clockwise fashion.
Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Federal Standards for the Delineation of Hydrologic Unit Boundaries
Codeset_Source:
Please refer to the Entity and Attribute Overview for valid values
Attribute:
Attribute_Label: Name
Attribute_Definition:
A unique name for each 4th level hydrologic unit that relates to the major water feature within the polygon or the major water body it contributes to
Attribute_Definition_Source: Federal Standards for Delineation of Hydrologic Unit Boundaries
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name:
Federal Standards for the Delineation of Hydrologic Unit Boundaries
Codeset_Source:
Please refer to the Entity and Attribute Overview for valid values
Attribute:
Attribute_Label: Shape_Length
Attribute_Definition: Length of feature in internal units.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in internal units squared.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
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:
Contact_Electronic_Mail_Address: vcgi@vermont.gov
Hours_of_Service: 8am - 5pm, M-F
Resource_Description: WaterHydro_WBD8VT
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:
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: 20140103
Time_of_Day: Unknown
Metadata_Reference_Information:
Metadata_Date: 20230915
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:
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: N/A
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: No security considerations
Generated by mp version 2.9.22 on Sun Sep 17 12:36:16 2023