View In:   ArcGIS Online Map Viewer

Name: SAV 2017

Display Field: BEDID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The 2017 Chesapeake Bay SAV Coverage was mapped from digital multispectral imagery with a 25cm GSD to assess water quality in the Bay. Each area of SAV was interpreted from the rectified imagry and classified into one of four density classes by the percentage of cover. The SAV beds were entered into an SDE GIS fetaure class using the quality control procedures documented below. The dataset contains all SAV areas that were identified from the areas flown. Some areas that are presumed to contain no SAV were not flown. Some small beds, particularly along narrow tributaries may not have been distinguishable on the aerial photography.

Copyright Text: MD iMAP, DNR, SAV Ecology, Monitoring, & Restoration Program, Virginia Institute of Marine Science

Default Visibility: true

MaxRecordCount: 85000

Supported Query Formats: JSON, geoJSON, PBF

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Max Scale: 0

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Supports ValidateSQL: true

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Supports Datum Transformation: true

Extent:

XMin: -8623264.9135
YMin: 4426857.3002
XMax: -8360807.3485
YMax: 4809909.339599997
Spatial Reference: 102100  (3857)

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID )
• QUADID ( type: esriFieldTypeInteger, alias: QUADID, editable: true, nullable: true, defaultValue: null, modelName: QUADID )
• BEDID ( type: esriFieldTypeString, alias: BEDID, editable: true, nullable: true, length: 2, defaultValue: null, modelName: BEDID )
• DENSITY ( type: esriFieldTypeInteger, alias: DENSITY, editable: true, nullable: true, defaultValue: null, modelName: DENSITY )
• BEDLABEL ( type: esriFieldTypeString, alias: BEDLABEL, editable: true, nullable: true, length: 6, defaultValue: null, modelName: BEDLABEL )
• ZONE_ ( type: esriFieldTypeInteger, alias: ZONE_, editable: true, nullable: true, defaultValue: null, modelName: ZONE_ )
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• ST ( type: esriFieldTypeString, alias: ST, editable: true, nullable: true, length: 2, defaultValue: null, modelName: ST )
• Surveyed ( type: esriFieldTypeString, alias: Surveyed, editable: true, nullable: true, length: 3, defaultValue: null, modelName: Surveyed )
• SAV2017 ( type: esriFieldTypeString, alias: SAV2017, editable: true, nullable: true, length: 50, defaultValue: null, modelName: SAV2017 )
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Templates:

• Name: SAV 2017
  Description:
  Prototype:
  SAV2017: null
  Surveyed: null
  QUADID: null
  BEDID: null
  DENSITY: null
  BEDLABEL: null
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Child Resources:   Field Groups   Contingent Values

Supported Operations:   Query   Query Analytic   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata   Update Metadata