Layers:

Layer: Submerged Aquatic Vegetation Beds (0)

Name: Submerged Aquatic Vegetation Beds

Display Field: SALINITY

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The 2010-2023 Chesapeake Bay SAV GIS layers were mapped from 1:24,000 black and white aerial photography to assess water quality in the Bay. Each area of SAV was interpreted from the rectified photography 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.

Service Item Id: af140956960f46b88daf9371025d6e6f

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

Default Visibility: true

MaxRecordCount: 2000

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: -8623265.1798
YMin: 4423290.754900001
XMax: -8421500.0866
YMax: 4810611.178400002
Spatial Reference: 102100  (3857)



Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: SALINITY
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: TF
  Label: Tidal Fresh
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [3, 169, 244, 255]
  Outline:
  N/A
• Value: OH
  Label: Oligohaline or Slightly Salty
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [25, 123, 208, 255]
  Outline:
  N/A
• Value: MH
  Label: Mesohaline or Moderately Salty
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [57, 73, 171, 255]
  Outline:
  N/A
• Value: PH
  Label: Polyhaline or Very Salty
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [49, 27, 146, 255]
  Outline:
  N/A
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


HasZ: false

HasM: false

Time Info:
Start Time Field: YEAR
End Time Field: null
Track ID Field: null
Time Extent:
[2010/01/01 00:00:00 UTC, 2023/01/01 00:00:00 UTC]

Time Reference: N/A
Time Interval: 1
Time Interval Units: esriTimeUnitsYears
Has Live Data: false
Export Options:
Use Time: true
Time Data Cumulative: false
Time Offset: null (null)

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• YEAR ( type: esriFieldTypeSmallInteger, alias: YEAR )
• SALINITY ( type: esriFieldTypeString, alias: SALINITY, length: 2 )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )