Name: Delta_InChannel_Islands

Display Field: COMMENTS

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Data contains historical polygons of in-channel islands within the Sacramento San Joaquin Delta. Data consists of merged datasets from 1929, 1940, 1949, 1952, 1995, 2002, and 2017. The 2017 polygons are digitized from the 2017 Delta LiDAR imagery by the Division of Engineering, Geomatics Branch, Geospatial Data Support Section. The older pre-2017 polygons were all digitized by staff in the Delta Levees Program. Data can be queried for a single year or date range using the 'Year' field. Historical data was compiled and merged from datasets provided by the Delta Levees program. Data coverage differs between years. Absences or gaps in historical data may occur. Older acquisitions generally have a smaller footprint than recent imagery acquisitions. The 2017 in-channel islands cover the Legal Delta, and also include Chipps Island. The associated data are considered DWR enterprise GIS data, which meet all appropriate requirements of the DWR Spatial Data Standards, specifically the DWR Spatial Data Standard version 3.1, dated September 11, 2019. DWR makes no warranties or guarantees — either expressed or implied — as to the completeness, accuracy, or correctness of the data. DWR neither accepts nor assumes liability arising from or for any incorrect, incomplete, or misleading subject data. The official DWR GIS steward for this data set is Arina Ushakova, who may be contacted at 916-653-3639 or at arina.ushakova@water.ca.gov. Comments, problems, improvements, updates, or suggestions should be forwarded to the official GIS steward as available and appropriate.

Copyright Text: CA Department of Water Resources

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -1.35735788378E7
YMin: 4547044.191500001
XMax: -1.35021478906E7
YMax: 4660006.221299998
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Year
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 1929
  Label: 1929
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [41, 70, 186, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 1940
  Label: 1940
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [39, 184, 101, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 1949
  Label: 1949
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [41, 112, 166, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 1952
  Label: 1952
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [169, 47, 196, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 1995
  Label: 1995
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [194, 201, 60, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 2002
  Label: 2002
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [201, 81, 127, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
• Value: 2017
  Label: 2017
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [179, 89, 37, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 0
Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: true
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• COMMENTS ( type: esriFieldTypeString, alias: COMMENTS, length: 30 )
• CLASS ( type: esriFieldTypeString, alias: CLASS, length: 30 , Coded Values: [Attached Island: Attached Island] , [In-Channel Island: In-Channel Island] )
• Source ( type: esriFieldTypeString, alias: Source, length: 255 )
• Modified_By ( type: esriFieldTypeString, alias: Modified_By, length: 255 )
• Date_Last_Modified ( type: esriFieldTypeDate, alias: Date_Last_Modified, length: 8 )
• Date_Data_Refers_To ( type: esriFieldTypeDate, alias: Date_Data_Refers_To, length: 8 )
• Year ( type: esriFieldTypeSmallInteger, alias: Year )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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