Name: SAV 2014

Display Field: SAV2014

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The 2014 Chesapeake Bay SAV Coverage was mapped from 1:24,000 black and white aerial photography and digital multispectral imagery with a 25cm GSD 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.

Copyright Text: MD iMAP, DNR, VIMS

Default Visibility: true

MaxRecordCount: 85000

Supported Query Formats: JSON, geoJSON

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: -8614571.8244
YMin: 4426859.709200002
XMax: -8360527.2969
YMax: 4809919.978699997
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [171, 205, 102, 255]
Outline:
Style: esriSLSSolid
Color: [0, 0, 0, 0]
Width: 0
Label:
Description:
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

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: GIS Object ID )
• SAV2014 ( type: esriFieldTypeString, alias: SAV 2014, length: 50 )
• Shape ( type: esriFieldTypeGeometry, alias: GIS Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: GIS Shape Area (m) )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: GIS Shape Length (m) )

Supported Operations:   Query   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata