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Dunedin-Bluff 1960 to NZGD2000 Conversion

  • Added 25 Jul 2016
  • Updated 19 Apr 2018

The DBL60-NZGD2000 grid enables the conversion of normal-orthometric heights from the Dunedin-Bluff 1960 local vertical datum directly to New Zealand Geodetic Datum 2000 (NZGD2000) ellipsoidal heights.

DBL60-NZGD2000 is published on a one arc-minute grid (approximately 1.8 kilometres) extending over the benchmarks that nominally define the extent of the Dunedin-Bluff 1960 vertical datum (167.4° E to 169.9° E, 45.0° S to 46.7° S).

The conversion value is represented by the attribute “delta”, in metres.

This grid is a combination of New Zealand Quasigeoid 2016 NZGeoid2016 and the DBL60-NZVD2016 height conversion grid. Where NZGeoid2016 is the reference surface for the New Zealand Vertical Datum 2016 (NZVD2016), while the DBL60-NZVD2016 grid models the difference between the Dunedin-Bluff 1960 vertical datum and NZVD2016 using the LINZ GPS-levelling marks.

More information on converting heights between vertical datums can be found on the LINZ website.


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TagsLAND-Cadastre, LAND-Geodesy, LAND-Topography, New Zealand
RegionsOtago Region, Southland Region
MetadataISO 19115/19139, Dublin Core

Technical Details

Layer ID 53425
Data type Vector point
Feature count 15553
Attributes longitude, latitude, delta
Services Vector Query API, Web Feature Service (WFS), Catalog Service (CS-W), Atom Feed


Added25 Jul 2016
Last updated2 Aug 2016
Revisions 5 - Browse all revisions
Current revision Imported on Aug. 2, 2016 in NZGD2000.
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