Parent Layer: Environmental

Name: Hurricane Storm Surge

Display Field: StormSurgeCategory

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: These polygons represent areas of inundation from the Maximum of Maximum predicted storm based on the National Hurricane Center's Slosh Model, Orfmom. The vertical datum is NGVD29. A centroid point shapefile was created from the surge polygon shapefile. The point shapefile was then reprojected to Virginia State Plane, South Zone, Nad 83, U.S. Survey feet. A TIN was created from the point shapefile based on the maximum of maximum surge elevations(excluding elevations 99.9). The TIN was then converted to a GRID with a cell size of 10ft x10ft. A TIN was created from spot elevations and contours for the county. The TIN was then converted to a grid with a 10 x 10 cell size. Other cell sizes were attempted. However, the smaller the cell size below 10, the greater (exponentially) the file size. The larger file sizes were not feasible to work with. A map calculation was completed. The resultant grid, and subsequent shapefile represent areas of inundation and dry ground. Post-processing edits were made to better reflect surge elevations or to "smooth" polygons where the grid cells were too large for the area analyzed. Data is still in draft state and may need to be edited.

Copyright Text:

Default Visibility: false

MaxRecordCount: 1000

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: 1.1997166200000003E7
YMin: 3563747.9989583343
XMax: 1.2098789061041668E7
YMax: 3663513.9575000107
Spatial Reference: 102747  (2284)

Drawing Info:

Renderer:
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Field 2: null
Field 3: null
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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: OBJECTID )
• StormSurgeCategory ( type: esriFieldTypeSmallInteger, alias: StormSurgeCategory )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• Shape.STArea() ( type: esriFieldTypeDouble, alias: Shape.STArea() )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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