Name: Storm Tide Pathways - NWS Major & Moderate Flood Stage Categories

Display Field: NWS_Stage

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: The complete Storm Tide Pathways report should be reviewed to fully understand how these data were derived. Each flood stage was delivered to the Martha's Vineyard Commission (MVC) from the STP project's consultant, the Center for Coastal Studies in shapefile format. The MVC converted these to file geodatabase feature classes. Data were kept in their original projected coordinate system of NAD 1983(2011) UTM Zone 19N horizontal units are meters.Each inundation plane shows the full extent of flooding up to the plane's specified upper Total Water Level (attribute "RangeU_LLW"). A separate feature class is provided for each inundation plane in half foot increments of Total Water Level rise from 2.5ft to 19.5ft. This wide range of inundation provides the user with flexibility of data display and lots of opportunity for visualizing many hypothetical scenarios of coast storm Total Water Level with or without future sea level rise.In the attribute table, the inundation plane upper limit is also provided relative to NAVD88 feet (see attribute "Range_Up"). Attribute "NAVD88_m" is the upper Total Water Level represented relative to NAVD88 in meters. Lastly, the attribute table also provides the Total Water Level upper limit referenced to MLLW in meters "MLLW_M".

Copyright Text: Center for Coastal Studies 2022; minor data management by Martha's Vineyard Commission 2023

Min. Scale: 0

Max. Scale: 0

Default Visibility: false

Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

XMin: 255373.195299998
YMin: 783734.3598
XMax: 288091.274700001
YMax: 804029.159699999
Spatial Reference: 26986 (26986)

Drawing Info:

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Has Geometry Properties: true

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Object ID Field: OBJECTID

Unique ID Field:

Name : OBJECTID

IsSystemMaintained : True

Global ID Field:

Type ID Field:

Fields:

• OBJECTID (type: esriFieldTypeOID, alias: OBJECTID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• NWS_Stage (type: esriFieldTypeString, alias: NWS_Stage, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• NWS_detail (type: esriFieldTypeString, alias: NWS_detail, SQL Type: sqlTypeOther, length: 50, nullable: true, editable: true)
• NWS_color (type: esriFieldTypeString, alias: NWS_color, SQL Type: sqlTypeOther, length: 20, nullable: true, editable: true)
• MIN_RangeU_LLW (type: esriFieldTypeDouble, alias: MIN_RangeU_LLW, SQL Type: sqlTypeOther, nullable: true, editable: true)
• MAX_RangeU_LLW (type: esriFieldTypeDouble, alias: MAX_RangeU_LLW, SQL Type: sqlTypeOther, nullable: true, editable: true)
• gridcode (type: esriFieldTypeInteger, alias: gridcode, SQL Type: sqlTypeOther, nullable: true, editable: true)
• Shape__Area (type: esriFieldTypeDouble, alias: Shape__Area, SQL Type: sqlTypeDouble, nullable: true, editable: false)
• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: Storm Tide Pathways - NWS Major & Moderate Flood Stage Categories
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:

Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 2/11/2026 4:54:37 PM

Schema Last Edit Date: 2/11/2026 4:54:37 PM

Data Last Edit Date: 2/11/2026 4:51:21 PM

Supported Operations:   Query   Query Pivot   Query Top Features   Query Analytic   Query Bins   Generate Renderer   Validate SQL   Get Estimates   ConvertFormat