Name: SAV 2022

Display Field: BEDID

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The 2022 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. The Department of Natural Resources makes no warranty, expressed or implied, as to the use or appropriateness of Spatial Data, and there are no warranties of merchantability or fitness for a particular purpose or use. The information contained in Spatial Data is from publicly available sources, but no representation is made as to the accuracy or completeness of Spatial Data. The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROMs or DVD-ROMs and energy. The Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties. The liability of the Department of Natural Resources for damage regardless of the form of the action shall not exceed any distribution fees that may have been paid in obtaining Spatial Data.

Copyright Text: MD iMAP, DNR, VIMS

Default Visibility: true

MaxRecordCount: 4900

Supported Query Formats: JSON, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

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Use Standardized Queries: true

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Extent:

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YMin: 4566808.841300003
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YMax: 4809848.282799996
Spatial Reference: 102100  (3857)

Drawing Info:

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Labeling Info:

Advanced Query Capabilities:

Supports Statistics: true
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HasZ: false

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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: GIS Object ID )
• QUADID ( type: esriFieldTypeSmallInteger, alias: Quad ID )
• BEDID ( type: esriFieldTypeString, alias: Bed ID, length: 2 )
• DENSITY ( type: esriFieldTypeSmallInteger, alias: Density )
• BEDLABEL ( type: esriFieldTypeString, alias: Bed Label, length: 3 )
• ZONE_ ( type: esriFieldTypeSmallInteger, alias: Zone )
• CBPSEG ( type: esriFieldTypeString, alias: Chesapeake Bay Program Segment, length: 6 )
• ST ( type: esriFieldTypeString, alias: State, length: 2 )
• Surveyed ( type: esriFieldTypeString, alias: Surveyed, length: 3 )
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• Shape.STLength() ( type: esriFieldTypeDouble, alias: GIS Shape Length (m) )

Supported Operations:   Query   Generate Renderer   Return Updates

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