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GW/Coastline_MHWS10 (MapServer)

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Service Description: Mean High Water Springs-10 (MHWS10) line for the Greater Wellington Region, NZ. MHWS10 is the mean high water spring tide exceeded 10 percent of the time. It is often used as a practical high tide level for infrastructure design works, and also for estimating extreme high (e.g. the 100-year Average Recurrence Interval) storm tides.Line extracted from a LIDAR DEM dated 2013 at 1m cell-size. LIDAR specification was for a ground model of +/-0.1 to 0.15m in z (1 sigma) with a resolution of 1.3 points per square metre. The line corresponds to an elevation contour defined from known tidal heights as offsets above the Wellington 1953 vertical datum. The elevation value in metres is provided with each line segment. The elevation value is derived from values in Appendices A and B in this report : http://www.pce.parliament.nz/media/1384/national-and-regional-risk-exposure-in-low-lying-coastal-areas-niwa-2015.pdf Also points showing tidal elevations relative to Wgtn VD 1953.

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Copyright Text: PCE,NIWA,GWRC,WAGGIS

Spatial Reference: 2193  (2193)


Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters

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

Document Info: Supports Dynamic Layers: false

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, AMF

Min Scale: 1000000

Max Scale: 0



Child Resources:   Info

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