Name: Forested Buffers

Display Field: Buffer

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The dataset displays the presence and absence of forested areas within a 100 foot-buffer of a stream or waterbody. The National Hydrography Dataset (NHD) stream layer developed by the United States Geological Survey was buffered 100-feet on each side of the stream centerline to determine stream buffers in Maryland. A shoreline file developed by the Maryland State Highway Administration was buffered 100-feet to determine the shoreline buffer in Maryland. The resulting buffer layers were clipped with a forest cover layer to determine the presence and absence of forest in those buffers. The forest cover layer was derived from a tree canopy layer developed by the Community College of Baltimore County, Catonsville, Geography Department. The tree canopy was developed using 2007 National Agriculture Imagery Program (NAIP) color infra-red 1-meter imagery. To determine areas forested, contiguous areas of tree cover less than 1 acre were removed from the dataset and then used for clipping the stream and shoreline buffers.

Copyright Text: MD iMAP, Robert Feldt, DNR, Forest Service; Kevin Coyne, DNR, Geospatial Information and Analysis Division

Default Visibility: true

MaxRecordCount: 7000

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: -8848457.96
YMin: 4564003.809799999
XMax: -8354589.271500001
YMax: 4825776.071800001
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: Buffer
Field 2: null
Field 3: null
Field Delimiter: ,
Default Symbol:
N/A
Default Label: null
UniqueValueInfos:
• Value: Forested
  Label: Forested
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [112, 168, 0, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 0]
  Width: 0
• Value: Unforested
  Label: Unforested
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [205, 102, 102, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 0]
  Width: 0
• Value: No Data
  Label: No Data
  Description:
  Symbol:
  Style: esriSFSSolid
  Color: [178, 178, 178, 255]
  Outline:
  Style: esriSLSSolid
  Color: [0, 0, 0, 0]
  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: 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 )
• Shape ( type: esriFieldTypeGeometry, alias: GIS Shape )
• Buffer ( type: esriFieldTypeString, alias: Buffer, length: 50 )
• Waterbody ( type: esriFieldTypeString, alias: Waterbody, length: 50 )
• County ( type: esriFieldTypeString, alias: County, length: 50 )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Generate Renderer   Return Updates

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