WaterHydro_WBD12VT

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service
Publication_Date: 20030515
Publication_Time: Unknown
Title: WaterHydro_WBD12VT
Edition: 2003
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: VT Watershed and Subwatershed hydrologic unit boundaries
Issue_Identification: 2003
Publication_Information:
Publication_Place: Colchester, Vermont
Publisher: Natural Resources Conservation Service
Other_Citation_Details: Tile Structure - NONE
Online_Linkage:
<http://www.vcgi.org/dataware/default.cfm?layer=WaterHydro_WBD12VT>
Online_Linkage:
<http://www.vcgi.org/dataware/default.cfm?layer=WaterHydro_WBD12VT&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_WBD12VT_POLY&WIDTH=300&HEIGHT=400&FORMAT=image/gif>
Description:
Abstract:
WaterHydro_WBD12VT was developed by NRCS. The boundaries on consistent with Vermont's Hydrography Dataset (VHD). This data set is a digital hydrologic unit boundary layer at the Subwatershed (12-digit) 6th level for the State of Vermont. The original data set was developed by delineating the boundary lines on base USGS 1:24000 scale topographic quadrangle, and digitizing the delineated lines. Digital Raster Graphics (DRG) images were used to update and correct the data set to meet the new FGDC Federal Standards for Delineating Hydrologic Unit Boundaries. This data set consists of geo-referenced digital map data and associated attributes created in accordance with the FGDC Proposal, Version 1.0 Federal Standards for Delineation of Hydrologic Unit Boundaries 3/01/02 (<http://www.ftw.nrcs.usda.gov/huc_data.html>). The map data are in a statewide coverage format and include complete coverage of the entire state of Vermont, and small parts of surrounding states and Quebec Province. The hydrologic unit ID code attached to each delineated polygon is linked to the attribute data.
Purpose:
The Watershed and Subwatershed hydrologic unit boundaries provide a uniquely identified and uniform method of subdividing large drainage areas. The smaller sized 6th level sub-watersheds (up to 250,000 acres) are useful for numerous application programs supported by a variety of local, State, and Federal Agencies. This data set is intended to be used as a tool for water-resource management and planning activities, particularly for site-specific and localized studies requiring a level of detail provided by large-scale map information. The dataset will be appended to a larger seamless nationally consistant geospatial database as other states complete their portion of the watershed boundary dataset.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19991001
Ending_Date: 20030515
Currentness_Reference: Publication date of sources
Status:
Progress: Preliminary release
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.137814
East_Bounding_Coordinate: -71.067201
North_Bounding_Coordinate: 45.393136
South_Bounding_Coordinate: 42.076818
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.
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_WBD12VT_POLY&WIDTH=300&HEIGHT=400&FORMAT=image/gif>
Browse_Graphic_File_Description: GIF
Browse_Graphic_File_Type: GIF
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 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 8.3.0.800
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: <http://www.ftw.nrcs.usda.gov/huc_data.html>
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: <http://www.ftw.nrcs.usda.gov/huc_data.html>
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_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bob Kort
Contact_Organization: USDA-Natural Resources Conservation Service
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
Country: USA
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
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
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 1733
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 428
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 428
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Node, planar graph
Point_and_Vector_Object_Count: 1308
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 519
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:
Entity_Type:
Entity_Type_Label: wbd12vt.aat
Entity_Type_Definition: identifies subwatershed boundaries
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: FID
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: FNODE#
Attribute_Definition: Internal node number for the beginning of an arc (from-node).
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Whole numbers that are automatically generated.
Attribute:
Attribute_Label: TNODE#
Attribute_Definition: Internal node number for the end of an arc (to-node).
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Whole numbers that are automatically generated.
Attribute:
Attribute_Label: LPOLY#
Attribute_Definition: Internal node number for the left polygon.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Whole numbers that are automatically generated.
Attribute:
Attribute_Label: RPOLY#
Attribute_Definition: Internal node number for the right polygon.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Whole numbers that are automatically generated.
Attribute:
Attribute_Label: 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: WBD12VT#
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
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_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: WBD12VT-ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
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: HU_LEVEL
Attribute_Definition:
Metadata ID is a code that identifies which metadata file applies to the arc
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: LINESOURCE
Attribute:
Attribute_Label: META_ID
Detailed_Description:
Entity_Type:
Entity_Type_Label: wbd12vt.pat
Entity_Type_Definition: polygons identify subwatershed boundaries
Entity_Type_Definition_Source: n/a
Attribute:
Attribute_Label: FID
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: 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.
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of feature in internal units.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Attribute:
Attribute_Label: WBD12VT#
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
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_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: WBD12VT-ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
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: HUC_8
Attribute_Definition:
This field provides a unique 12-digit code for each subwatershed. Add two digits to the end of the existing 10-digit code, creating a 12-digit number.
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: HUC_10
Attribute_Definition:
Area of subwatershed including non-contributing areas calculated to acres as a whole number, no decimals. Data was projected to Albers Equal Area to calculate the acres field. Acres were calculated by dividing AREA by 4046.86.
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: HUC_12
Attribute_Definition:
The "STATES" field needs to include the names of all state(s) that the subwatershed falls within.
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: ACRES
Attribute_Definition:
Drainage areas that do not flow toward the outlet of any hydrologic unit are considered non-contributing.
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: STATES
Attribute_Definition:
The 10-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within. Outlets created by ditching or other artificial drainage are not to be considered for this field.
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: NCONTRB_A
Attribute_Definition:
A unique name for each 5th 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: HU_10_DS
Attribute_Definition:
This field identifies interbasin transfers (IT) and dams at outlet (DM) that modify natural overland flow. Modifications are identified from most significant to least significant modification(s) and are based on queries of other vector datasets and visual review of the DRG-Es. Hydrologic units with no modification are marked with NM.
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: HU_10_NAME
Attribute_Definition: This field identifies the type of watershed.
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: HU_10_MOD
Attribute_Definition:
The 12-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within. Outlets created by ditching or other artificial drainage are not to be considered for this field.
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: HU_10_TYPE
Attribute_Definition:
A unique name for each 6th 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: HU_12_DS
Attribute_Definition:
This field identifies interbasin transfers (IT) and dams at outlet (DM) that modify natural overland flow. Modifications are identified from most significant to least significant modification(s) and are based on a query of hydrologic units using the 1:100,000-scale National Hydrography Dataset. Hydrologic units with no modification are marked with NM.
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: HU_12_NAME
Attribute_Definition: This field identifies the type of watershed.
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: HU_12_MOD
Attribute:
Attribute_Label: HU_12_TYPE
Attribute:
Attribute_Label: OUTLET-TOWN
Attribute:
Attribute_Label: REGION
Attribute:
Attribute_Label: SUBREGION
Attribute:
Attribute_Label: BASIN
Attribute:
Attribute_Label: SUBBASIN
Attribute:
Attribute_Label: CT-SRBASINS
Attribute:
Attribute_Label: CT-REGBASINS
Attribute:
Attribute_Label: CK
Attribute:
Attribute_Label: HUC_2
Attribute:
Attribute_Label: HUC_4
Attribute:
Attribute_Label: HUC_6
Detailed_Description:
Entity_Type:
Entity_Type_Label: wbd12vt.nat
Attribute:
Attribute_Label: FID
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: ARC#
Attribute:
Attribute_Label: WBD12VT#
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: WBD12VT-ID
Attribute_Definition: User-defined feature number.
Attribute_Definition_Source: ESRI
Attribute:
Attribute_Label: ORIG
Overview_Description:
Entity_and_Attribute_Overview:
This is a description of attributes by field from the Federal Standards for Delineation of Hydrologic Unit Boundaries 1) Polygon attributes
Huc_8 : Eight Digit Hydrologic Unit Code - (REQUIRED) 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.
Huc_10: Ten Digit Hydrologic Unit Code - (REQUIRED) This field provides a unique 10-digit code for each watershed. Add two digits to the end of the existing 8-digit code, therefore resulting in a 10-digit number. This same number should be used in every record that pertains to a subwatershed that resides within the same 10-digit watershed.Numbers were assigned in an upstream to downstream fashion. Where no downstream/upstream relationship could be determined numbers were assigned in a clockwise fashion. It should be noted that the polygons that cross into Idaho were numbered by Idaho and are not consistent with the above methods. Affected huc_8s include: 17040202, 17040204 and 17040104.
Huc_12: Twelve Digit Hydrologic Unit Code - (REQUIRED) This field provides a unique 12-digit code for each subwatershed. Add two digits to the end of the existing 10-digit code, therefore creating a 12-digit number.Numbers were assigned in an upstream to downstream fashion. Where no downstream/upstream relationship could be determined numbers were assigned in a clockwise fashion. It should be noted that the polygons that cross into Idaho were numbered by Idaho and are not consistent with the above methods. Affected huc_8s include: 17040202, 17040204 and 17040104.
Acres: Acres - (REQUIRED) Area of subwatershed including non-contributing areas calculated to acres as a whole number, no decimals. The "Acres" field needs to be calculated from the "Area" field.
States: States - (REQUIRED) The "States" field needs to include the names of all state(s) that the subwatershed falls within. Use the 2-digit postal abbreviation in upper case and sort the state(s) in alphabetical order. If using more then one abbreviation, separate with a comma with no space after the comma.
Ncontrb_a: Non-Contributing Area - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) Drainage areas that do not flow toward the outlet of any hydrologic unit are considered non-contributing. If a non-contributing area is on the boundary between two or more hydrologic units, determine the low point along the non-contributing area boundary. The non-contributing area should be associated with the hydrologic unit adjacent to the low point on the boundary. This attribute should be the total of the non-contributing areas within a hydrologic unit calculated in acres.
Hu_10_ds: Fifth Level Downstream Hydrologic Unit Code - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) Populate this field with the 10-digit code of the 5th level hydrologic unit that is receiving the majority of the flow from the watershed that the 6th level HU falls within. Outlets created by ditching or other artificial drainage are not to be considered for this field. If an HU flows into an ocean or the Gulf of Mexico populate this field with "OCEAN" and if a HU flows into one of the Great Lakes use the term "LAKE". If a HU flows across the international border use "CANADA", the country the HU drains into. If an HU is a closed basin, then populate this record with the term "CLOSED BASIN".
Hu_10_name: Fifth Level Hydrologic Unit Name - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) This field is for officially recognized names only. Populate this field by following the directions in subsection 6.3 "Watershed and Subwatershed Naming Protocol". Populate this field with the identical name for all 6th level hydrologic units that fall within the same 10-digit HU. The name used to attribute the watershed should be used only once within a 4th level unit. Some 10-digit HU were assigned the huc_10 number when no GNIS name was identified on the DRG-Es.
Hu_10_mod: Fifth Level Hydrologic Unit Modifications - (REQUIRED) This field should identify any type of modifications to natural overland flow that alters the location of the hydrologic unit boundary for a 10-digit watershed. In the attribute field, identify from most significant to least significant modification(s). Use one or more of the following abbreviations in uppercase to identify your modification(s). If using more then one abbreviation, separate with a comma with no space after the comma. SC - Stormwater Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Non-Contributing KA - Karst LE - Levee NM - No Modifications OC - Overflow Channel DM - Dam at outlet or HU boundary OT - Other
Hu_10_type: Fifth Level Hydrologic Unit Type - (REQUIRED) Populate this field with the hydrologic unit type from the list provided that most closely identifies the watershed. Use any of the one-digit abbreviations in uppercase that is provided in the list. S - "Standard" hydrologic unit - Any land HU with drainage flowing to a single outlet point, excluding non-contributing areas. This includes areas or small triangular wedges between adjacent HU's that remain after classic hydrologic units are delineated. Some examples include "true", "classic", "composite", and "remnant" hydrologic units. C - "Closed Basin" hydrologic unit - A drainage area that is 100% non-contributing. This means all surface flow is internal, no overland flow leaves the hydrologic unit through the outlet point. F - "Frontal" hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. These HU's are predominantly land with some water areas at or near the outlet(s). W - "Water" hydrologic unit - Hydrologic units that are predominantly water with adjacent land areas, ex. lake, easturies, harbors. I - "Island" hydrologic unit - A hydrologic unit that is one or more islands and adjacent water out to the toe of the shore face. U - "Unclassified" hydrologic unit - A hydrologic unit that can't be defined or doesn't fit into one of the types that have been listed.
Hu_12_ds: Sixth Level Downstream Hydrologic Unit Code - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) Populate this field with the 12-digit code of the 6th level hydrologic unit that is receiving the majority of the flow from the subwatershed. Outlets created by ditching or other artificial drainage are not to be considered for this field. If a HU flows into an ocean, populate this field with "OCEAN". If a HU flows across the international border use "CANADA, the country the HU drains into. Hu_12_name: Sixth Level Hydrologic Unit Name - (FIELD REQUIRED, ATTRIBUTES OPTIONAL) This field is for officially recognized names only. Populate this field by following the directions in subsection 6.3 "Watershed and Subwatershed Naming Protocol". The name used to attribute the subwatershed should be used only once within a 6th level unit. Some 10-digit HU were assigned the huc_12 number when no GNIS name was identified on the DRG-Es.
Hu_12_mod: Sixth Level Hydrologic Unit Modifications - (REQUIRED) This field should identify any type of modifications to natural overland flow that alters the location of the hydrologic unit boundary for a 12-digit subwatershed. In the attribute field, identify from most significant to least significant modification(s). Use one or more of the following abbreviations in uppercase to identify your modification(s). If using more than one abbreviation, separate with a comma with no space after the comma. SC - Stormwater Canal ID - Irrigation Ditch IT - Interbasin Transfer BC - Barge Canal SD - Stormwater Ditch PD - Pipe Diversion CD - Channel Diversion NC - Non-Contributing
KA - Karst LE - Levee NM - No Modifications OC - Overflow Channel DM - Dam at outlet or HU boundary OT - Other
Hu_12_type: Sixth Level Hydrologic Unit Type - (REQUIRED) This field was populated with the hydrologic unit type from the list provided that most closely identifies the subwatershed. Use any of the one digit abbreviations in uppercase that is provided in the list. S - "Standard" hydrologic unit - Any land HU with drainage flowing to a single outlet point, excluding non-contributing areas. This includes areas or small triangular wedges between adjacent HU's that remain after classic hydrologic units are delineated. Some examples include "true", "classic", "composite", and "remnant" hydrologic units. C - "Closed Basin" hydrologic unit - A drainage area that is 100% non-contributing. This means all surface flow is internal, no overland flow leaves the hydrologic unit through the outlet point. F - "Frontal" hydrologic unit - Areas along the coastline of lakes, oceans, bays, etc. that have more than one outlet. These HU's are predominantly land with some water at or near the outlet(s). W - "Water" hydrologic unit - Hydrologic units that are predominantly water with adjacent land areas, ex. lake, easturies. I - "Island" hydrologic unit - A hydrologic unit that is one or more islands and adjacent water out to the toe of the shore face. U - "Unclassified" hydrologic unit - A hydrologic unit that can't be defined or doesn't fit into one of the types that have been listed.
2) Line attributes
Hu_level: Hydrologic Unit Level - (REQUIRED) This field provides the means to create cartographically pleasing maps. Populate this field with the highest hydrologic unit level (smallest number) for the line (arc) represented by the record. Record the level using numbers 1 through 6 representing each level with 1 being the highest and 6 the lowest level. An example would be if a line represents a region, subregion, basin, subbasin, watershed, and subwatershed boundary, then this cell would be populated with a 1 (Region). Example two would be if a line is a subbasin, watershed, and subwatershed boundary, then the cell would get a 4 (Subbasin). Use one of the levels provided in the list below. Level Digit# Name 1 2 Region 2 4 Subregion 3 6 Basin 4 8 Subbasin 5 10 Watershed 6 12 Subwatershed
Linesource: Line Spatial Data Source - (REQUIRED) The Linesource should indicate the base map source(s) used to delineate at 1:24,000 scale. Populate the field using one of the standardized code(s) listed below in uppercase. If using more than one code, separate with a comma with no space after the comma. TOPO24 - Delineation from hardcopy 1:24,000 scale topographic maps TOPO25 - Delineation from hardcopy 1:25,000 topgraphic maps, only Alaska and Caribbean TOPO63 - Delineation from hardcopy 1:63,360 topographic maps, only Alaska and Caribbean DRG24 - Delineation from 1:24,000 scale Digital Raster Graphics DRG25 - Delineation from 1:25,000 Digital Raster Graphics, only Alaska and Caribbean DRG63 - Delineation from 1:63,360 Digital Raster Graphics, only Alaska and Caribbean DEM10 - Derived from 10 meter Digital Elevation Model DEM30 - Derived from 30 meter Digital Elevation Model NED30 - Derived from 30 meter National Elevation Dateset Model EDNA30 - (formally NED-H), derived from 30 meter Elevation Derivatives for National Applications BATH"scale" (ex. BATH24) - Interpreted from NOAA 1:24,000 scale bathymetric data
HYPSO"scale" (ex. HYPSO24)- Delineated from 1:24,000 scale contour data
ORTHO"scale" (ex. ORTHO12) - Interpreted from 1:12,000 scale Ortho-imagery DEDEM10 - Drainage enforced 10 meter Digital Elevation Model DEDEM30 - Drainage enforced 30 meter Digital Elevation Model GPS - Derived from Global Positioning System LIDAR - Derived from LIDAR IFSAR - Derived from IFSAR data OTH - Other UNK - Unknown All other reference and source maps not listed should be noted in the metadata. Meta_id: Metadata ID Number - (REQUIRED) The attribute, Metadata ID is a code that identifies which metadata file applies to the arc. In many cases there will only be one metadata file. However, in some cases more than one metadata file may be created to identify different groups and/or procedures used to produce the lines. These separate metadata files may be identified for each separate arc. The metadata ID should be a 4-character code starting with the 2-letter state postal code, followed by a 2-digit sequence number. For example "VT01", "NH02", etc.
Entity_and_Attribute_Detail_Citation: Federal Standard for Delineation of Hydrologic Unit Boundaries
Distribution_Information:
Distributor:
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
Resource_Description: WaterHydro_WBD12VT
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
Transfer_Size: 7.397
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://www.vcgi.org/dataware/default.cfm?layer=WaterHydro_WBD12VT>
Access_Instructions: Download from web site.
Offline_Option:
Offline_Media: CD-ROM
Offline_Option:
Offline_Media: 3-1/2 inch floppy disk
Offline_Option:
Offline_Media: 4 mm cartridge tape
Fees:
No charge when downloading from the internet, and when no custom processing is required.
Ordering_Instructions:
Download from web site or mail-fax a copy of the VCGI 'Data Request Form' which is available from the VGIS web site <http://www.vcgi.org/dataware/order_forms>
Turnaround: About 5 days.
Custom_Order_Process:
Mail or Fax a copy of the VCGI 'Data Request Form' which is available from <http://www.vcgi.org/dataware/order_forms>
Technical_Prerequisites: ESRI Arc/Info, ArcView, or ArcExplorer software.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20001023
Time_of_Day: Unknown
Metadata_Reference_Information:
Metadata_Date: 20040226
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: 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
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 2.9.5 on Wed May 13 13:49:31 2009