Layers:

Layer: HUC12 Subwatershed Line (0)


Name: HUC12 Subwatershed Line

Display Field: TNMID

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description:

The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.

This version is a custom snapshot for distribution on the ND GIS Hub Data Portal downloaded from the National Map Hydrography Dataset on April 2023.



Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agencies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data. See dataset specific metadata for further information

Min. Scale: 0

Max. Scale: 0

Default Visibility: true

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: -19667280.7895414
YMin: -1644317.71693365
XMax: 20021552.0806814
YMax: 6994329.74829119
Spatial Reference: 102100 (3857)


Drawing Info:

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HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True


Global ID Field:

Type ID Field:

Fields:
• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• TNMID (type: esriFieldTypeString, alias: TNMID, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
• HUDIGIT (type: esriFieldTypeInteger, alias: HUDIGIT, SQL Type: sqlTypeOther, nullable: true, editable: true, Coded Values: [0: No data], [2: 2-digit Hydrologic Unit], [4: 4-digit Hydrologic Unit], ... 6 more ...)
• HUMOD (type: esriFieldTypeString, alias: HUMod, SQL Type: sqlTypeOther, length: 30, nullable: true, editable: true)
• LINESOURCE (type: esriFieldTypeString, alias: LineSource, SQL Type: sqlTypeOther, length: 30, nullable: true, editable: true)
• METASOURCEID (type: esriFieldTypeString, alias: MetaSourceID, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
• LOADDATE (type: esriFieldTypeDate, alias: LoadDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: HUC12 Subwatershed Line
Description:
Drawing Tool: esriFeatureEditToolLine
Prototype:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 4/26/2023 7:54:29 PM

Schema Last Edit Date: 4/26/2023 7:54:29 PM

Data Last Edit Date: 4/26/2023 7:54:29 PM