Layer: SCIRP Hydrologic Unit 12 (ID:11)

View In: Map Viewer

Name: SCIRP Hydrologic Unit 12

Display Field: name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description:

The Watershed Boundary Dataset (HUC‑12) provides standardized delineations of California’s sub‑watersheds, capturing hydrologically meaningful drainage areas used for water‑resource planning and analysis. Maintained by the California Department of Water Resources (DWR), the dataset is derived from the Calwater 2.2.1 watershed framework, which integrates both state and federal hydrologic coding systems. Each polygon represents a nested watershed unit and includes detailed attribution such as hydrologic region, unit, area, sub‑area, acreage, and cross‑referenced USGS Hydrologic Unit Codes (HUCs). The dataset supports consistent statewide hydrologic modeling, resource management, regulatory reporting, environmental assessment, and GIS applications.

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:

Drawing Info:

{"renderer":{"type":"simple","symbol":{"type":"esriSFS","style":"esriSFSSolid","color":[130,130,130,0],"outline":{"type":"esriSLS","style":"esriSLSSolid","color":[115,223,255,255],"width":1}}},"scaleSymbols":true,"transparency":0,"labelingInfo":null}
HasZ: false

HasM: false

Has Attachments: false

Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

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)
metasourceid (type: esriFieldTypeString, alias: MetaSourceID, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
sourcedatadesc (type: esriFieldTypeString, alias: SourceDataDesc, SQL Type: sqlTypeOther, length: 100, nullable: true, editable: true)
sourceoriginator (type: esriFieldTypeString, alias: SourceOriginator, SQL Type: sqlTypeOther, length: 130, nullable: true, editable: true)
sourcefeatureid (type: esriFieldTypeString, alias: SourceFeatureID, SQL Type: sqlTypeOther, length: 40, nullable: true, editable: true)
loaddate (type: esriFieldTypeDate, alias: LoadDate, SQL Type: sqlTypeOther, length: 8, nullable: true, editable: true)
referencegnis_ids (type: esriFieldTypeString, alias: ReferenceGNIS_IDs, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
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: 1, nullable: true, editable: true, Coded Values: [S: Standard], [C: Closed Basin], [F: Frontal], ... 5 more ...)
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)
noncontributingareaacres (type: esriFieldTypeDouble, alias: NonContributingAreaAcres, SQL Type: sqlTypeOther, nullable: true, editable: true)
noncontributingareasqkm (type: esriFieldTypeDouble, alias: NonContributingAreaSqKm, SQL Type: sqlTypeOther, 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:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 8/14/2026 8:26:44 PM

Schema Last Edit Date: 8/14/2026 8:26:44 PM

Data Last Edit Date: 8/14/2026 8:26:44 PM

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