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Common_Layers/Topography (MapServer)

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Service Description:

Spot elevations across the City of Chesapeake. The points were created by using the ArcGIS "Create Random Points" tool and used the extent of the USGS DEM mosaic. The "Extract Values to Points" tool was then used to extract the values of the DEM to the random points. The elevations of the result are given in NAVD88(feet). Random points that fell within the hydropoly feature class (as of 3/16/15) were excluded from the final output. Elevations are based on a "bare-earth."

2 foot contour lines in Chesapeake, VA. Contours were generated from a regional bare earth DEM from the USGS resampled from 2.5ft grids to 20ft grids. The resampling allows for smoother, more cartographic contours. The DEM was hydro-flattened and reviewed at 1:5000. Elevations are in NAVD88(feet). Contours generated that measured less than 100 in the Shape_Length field were removed. Elevations are based on a "bare-earth." Data is for reference only.



Map Name: Topography

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Spot elevations across the City of Chesapeake. The points were created by using the ArcGIS "Create Random Points" tool and used the extent of the USGS DEM mosaic. The "Extract Values to Points" tool was then used to extract the values of the DEM to the random points. The elevations of the result are given in NAVD88(feet). Random points that fell within the hydropoly feature class (as of 3/16/15) were excluded from the final output. Elevations are based on a "bare-earth."

2 foot contour lines in Chesapeake, VA. Contours were generated from a regional bare earth DEM from the USGS resampled from 2.5ft grids to 20ft grids. The resampling allows for smoother, more cartographic contours. The DEM was hydro-flattened and reviewed at 1:5000. Elevations are in NAVD88(feet). Contours generated that measured less than 100 in the Shape_Length field were removed. Elevations are based on a "bare-earth." Data is for reference only.



Service Item Id: 73933e49ebe348dcb00e3defbc423221

Copyright Text: USGS, Dewberry, HRPDC, Information Technology Chesapeake VA

Spatial Reference: 102747  (2284)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriFeet

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info: Supports Dynamic Layers: true

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 2400

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

Supported Operations:   Export Map   Identify   QueryLegends   QueryDomains   Find   Return Updates