Name: Coastal Bays Contours

Display Field: CONTOUR

Type: Feature Layer

Geometry Type: esriGeometryPolyline

Description: Bathymetry for Chesapeake Bay and Coastal Bays was derived from two hundred ninety-seven surveys containing 3,178,509 soundings. Thirty-five older, less accurate, overlapping surveys were entirely omitted before tinning. Partial overlap from other older, less accurate surveys was also omitted prior to tinning. The surveys used dated from 1859 to 1993. Thirty-six surveys dated from 1859 to 1918, thirty-seven from the 1930s, ninety-one from the 1940s, sixty- six from the 1950s, twenty-five from the 1960s, twenty-four from the 1970s, fourteen from the 1980s, and four from the 1990s. The total range of sounding data was 3.7 meters to -50.4 meters at mean low water. Mean high water values between 0.2 and 1.2 meters were assigned to the shoreline. Fifteen points were found that were not consistent with the surrounding data and were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676).

Copyright Text: MD iMAP, DNR, NOAA NOS

Default Visibility: true

MaxRecordCount: 65000

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: -8404669.005
YMin: 4558953.076300003
XMax: -8355994.027899999
YMax: 4644494.912600003
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSLSSolid
Color: [0, 77, 168, 255]
Width: 1
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 )
• CONTOUR ( type: esriFieldTypeDouble, alias: Contour )
• contour_ft ( type: esriFieldTypeSmallInteger, alias: Contour in Feet )
• Shape ( type: esriFieldTypeGeometry, alias: GIS Shape )
• Shape.STLength() ( type: esriFieldTypeDouble, alias: Shape.STLength() )

Supported Operations:   Query   Generate Renderer   Return Updates

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