View In:   ArcGIS Online Map Viewer

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

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: 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: true
Supports Returning Geometry Centroid: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: Year

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• COMMENTS ( type: esriFieldTypeString, alias: COMMENTS, editable: true, nullable: true, length: 30, defaultValue: null, modelName: COMMENTS )
• CLASS ( type: esriFieldTypeString, alias: CLASS, editable: true, nullable: true, length: 30, defaultValue: null, modelName: CLASS , Coded Values: [Attached Island: Attached Island] , [In-Channel Island: In-Channel Island] )
• Source ( type: esriFieldTypeString, alias: Source, editable: true, nullable: true, length: 255, defaultValue: null, modelName: Source )
• Modified_By ( type: esriFieldTypeString, alias: Modified_By, editable: true, nullable: true, length: 255, defaultValue: null, modelName: Modified_By )
• Date_Last_Modified ( type: esriFieldTypeDate, alias: Date_Last_Modified, editable: true, nullable: true, length: 8, defaultValue: null, modelName: Date_Last_Modified )
• Date_Data_Refers_To ( type: esriFieldTypeDate, alias: Date_Data_Refers_To, editable: true, nullable: true, length: 8, defaultValue: null, modelName: Date_Data_Refers_To )
• Year ( type: esriFieldTypeSmallInteger, alias: Year, editable: true, nullable: true, defaultValue: null, modelName: Year )
• Shape__Area ( type: esriFieldTypeDouble, alias: Shape.STArea(), editable: false, nullable: false, defaultValue: null, modelName: Shape.STArea() )
• Shape__Length ( type: esriFieldTypeDouble, alias: Shape.STLength(), editable: false, nullable: false, defaultValue: null, modelName: Shape.STLength() )

Types:

ID: 1929
Name: 1929
Domains:
• CLASS:
  Inherited
Templates:
• Name: 1929
  Description:
  Prototype:
  Year: 1929
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 1940
Name: 1940
Domains:
• CLASS:
  Inherited
Templates:
• Name: 1940
  Description:
  Prototype:
  Year: 1940
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 1949
Name: 1949
Domains:
• CLASS:
  Inherited
Templates:
• Name: 1949
  Description:
  Prototype:
  Year: 1949
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 1952
Name: 1952
Domains:
• CLASS:
  Inherited
Templates:
• Name: 1952
  Description:
  Prototype:
  Year: 1952
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 1995
Name: 1995
Domains:
• CLASS:
  Inherited
Templates:
• Name: 1995
  Description:
  Prototype:
  Year: 1995
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 2002
Name: 2002
Domains:
• CLASS:
  Inherited
Templates:
• Name: 2002
  Description:
  Prototype:
  Year: 2002
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

ID: 2017
Name: 2017
Domains:
• CLASS:
  Inherited
Templates:
• Name: 2017
  Description:
  Prototype:
  Year: 2017
  Date_Data_Refers_To: null
  COMMENTS: null
  CLASS: null
  Source: null
  Modified_By: null
  Date_Last_Modified: null
  
  Drawing Tool: esriFeatureEditToolPolygon

---

Capabilities: Query

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Supported Operations:   Query   Query Attachments   Calculate   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata