Name: WBDHU12

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This geospatial dataset represents the 6th level (12-digit) hydrologic unit boundaries from the Watershed Boundary Dataset (WBD) layer for Washington. Hydrologic units within the HU_BOUNDARY_WBD_WA_HUC_12 represent drainage areas delineated to the 6th level drainage systems. Their boundaries are defined by hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream, or similar surface waters. Hydrologic units within the HU_BOUNDARY_WBD_WA_HUC_12 can accept surface water directly from upstream drainage areas, and indirectly from associated surface areas such as remnant, non-contributing, and diversions to form a drainage area with single or multiple outlet points. Boundaries within the HU_BOUNDARY_WBD_WA_HUC_12 were delineated by Pacific Northwest (PNW) Hydrography Framework Partners and Natural Resources Conservation Service (NRCS) to meet state requirements and to contribute to the national WBD repository. To meet these goals, the WBD must adhere to the "Federal Standards for Delineation of Hydrologic Unit Boundaries", dated October, 2004. These HUC_12 boundaries were made from the Washington dataset that has been nationally certified by Natural Resources Conservation Service (NRCS) Prior to submission the dataset was subjected to an iterative review and edit process to ensure that the hydrologic boundaries fully satisfy the federal standards. This work was completed under a Memorandum of Understanding between the Pacific Northwest Hydrography Framework Partnership, NRCS and the US Geological Survey (USGS). The current dataset includes all 6th level boundaries that are in all 4th level (8-digit) subbasins that fall within or intersect the Washington state boundary.

Copyright Text:

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: -13922937.0182584
YMin: 5630623.11643024
XMax: -12818447.7292151
YMax: 6557956.39348863
Spatial Reference: 102100 (3857)

Drawing Info:

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HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: FID

Unique ID Field:

Name : FID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• AreaAcres (type: esriFieldTypeDouble, alias: AreaAcres, SQL Type: sqlTypeOther, nullable: true, editable: true)
• AreaSqKm (type: esriFieldTypeDouble, alias: AreaSqKm, SQL Type: sqlTypeOther, nullable: true, editable: true)
• States (type: esriFieldTypeString, alias: States, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• HUC12 (type: esriFieldTypeString, alias: HUC12, SQL Type: sqlTypeOther, length: 12, nullable: true, editable: true)
• Name (type: esriFieldTypeString, alias: Name, SQL Type: sqlTypeOther, length: 120, nullable: true, editable: true)
• HUType (type: esriFieldTypeString, alias: HUType, SQL Type: sqlTypeOther, length: 254, nullable: true, editable: true)
• HUMod (type: esriFieldTypeString, alias: HUMod, SQL Type: sqlTypeOther, length: 30, nullable: true, editable: true)
• ToHUC (type: esriFieldTypeString, alias: ToHUC, SQL Type: sqlTypeOther, length: 16, nullable: true, editable: true)
• TNMID (type: esriFieldTypeString, alias: TNMID, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
• LoadDate (type: esriFieldTypeDate, alias: LoadDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
• NonContrib (type: esriFieldTypeDouble, alias: NonContrib, SQL Type: sqlTypeOther, nullable: true, editable: true)
• NonContr_1 (type: esriFieldTypeDouble, alias: NonContr_1, SQL Type: sqlTypeOther, nullable: true, editable: true)
• GNIS_ID (type: esriFieldTypeInteger, alias: GNIS_ID, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MetaSource (type: esriFieldTypeString, alias: MetaSource, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
• GlobalID (type: esriFieldTypeString, alias: GlobalID, SQL Type: sqlTypeOther, length: 38, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: WBDHU12
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 6/2/2025 10:49:07 PM

Schema Last Edit Date: 6/2/2025 10:49:07 PM

Data Last Edit Date: 6/2/2025 10:49:07 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat