The deformation model associated with the NZGD2000 datum was updated, nominally at 1 August 2013. The actual update of LINZ data took place on 14-15 December 2013. This update involved reverse patches, which means that the "reference coordinates" of features were updated. The main updates relate to the Christchurch earthquakes. The patch also updated coordinates affected by other South Island earthquakes since 2000. These updates have been incorporated into Landonline and resulted in spatial updates to all features in the affected areas. This data set contains contours indicating the extent and magnitude of the coordinate changes to assist in assessing the impact of this update on client data sets. This dataset is also available as a [polyline](http://data.linz.govt.nz/layer/1684-nzgd2000-deformation-model-version-2013-08-01-reverse-patch-coordinate-shifts-contours/). For more information see [here](http://www.landonline.govt.nz/landonline-system-updates/south-island-coordinate-update)

The deformation model associated with the NZGD2000 datum was updated, nominally at 1 August 2013. The actual update of LINZ data took place on 14-15 December 2013. This update involved reverse patches, which means that the "reference coordinates" of features were updated. The main updates relate to the Christchurch earthquakes. The patch also updated coordinates affected by other South Island earthquakes since 2000. These updates have been incorporated into Landonline and resulted in spatial updates to all features in the affected areas. This data set contains contours indicating the extent and magnitude of the coordinate changes to assist in assessing the impact of this update on client data sets. This dataset is also available as a [multipolygon](http://data.linz.govt.nz/#/layer/1685-nzgd2000-deformation-model-version-2013-08-01-reverse-patch-coordinate-shifts-filled-contours/). For more information see [here](http://www.landonline.govt.nz/landonline-system-updates/south-island-coordinate-update)

The deformation model associated with the NZGD2000 datum was updated, nominally at 1 August 2013. The actual update of LINZ data took place on 14-15 December 2013. This update involved reverse patches, which means that the "reference coordinates" of features were updated. The main updates relate to the Christchurch earthquakes. The patch also updated coordinates affected by other South Island earthquakes since 2000. These updates have been incorporated into Landonline and resulted in spatial updates to all features in the affected areas. This data set contains contours indicating the extent and magnitude of the coordinate changes to assist in assessing the impact of this update on client data sets. This dataset is also available as a [polyline](http://data.linz.govt.nz/layer/1684-nzgd2000-deformation-model-version-2013-08-01-reverse-patch-coordinate-shifts-contours/). For more information see [here](http://www.landonline.govt.nz/landonline-system-updates/south-island-coordinate-update)

A Statutory Action is an action recorded against a parcel that is authorised by a specific Part or Section of an Act. This table provides information about the current and historic statutory actions as recorded against specific parcels. **Note**: Historic actions are only available in this dataset since the beginning of Landonline operations (about 2000). This page on LINZ's [historic property databases](https://www.linz.govt.nz/data/linz-data/property-ownership-and-boundary-data/historic-property-databases) provides actual dates when Landonline operations started. This table has direct relationships with and can be linked to spatial parcel layers such as [NZ Parcels](http://data.linz.govt.nz/layer/51571), [NZ Linear Parcels](http://data.linz.govt.nz/layer/51570) or [NZ Primary Parcels](http://data.linz.govt.nz/layer/50772). For more information about this table, other property datasets, and how to relate them to each other, refer to the [Property Boundary and Ownership Data Dictionary](https://data.linz.govt.nz/document/11012).

The deformation model associated with the NZGD2000 datum was updated, nominally at 1 August 2013. The actual update of LINZ data took place on 14-15 December 2013. This update involved reverse patches, which means that the "reference coordinates" of features were updated. The main updates relate to the Christchurch earthquakes. The patch also updated coordinates affected by other South Island earthquakes since 2000. These updates have been incorporated into Landonline and resulted in spatial updates to all features in the affected areas. This data set contains contours indicating the extent and magnitude of the coordinate changes to assist in assessing the impact of this update on client data sets. This dataset is also available as a [multipolygon](http://data.linz.govt.nz/#/layer/1685-nzgd2000-deformation-model-version-2013-08-01-reverse-patch-coordinate-shifts-filled-contours/). For more information see [here](http://www.landonline.govt.nz/landonline-system-updates/south-island-coordinate-update)

The WGN53-NZVD2016 grid enables the conversion of normal-orthometric heights from the Wellington 1953 local vertical datum to the New Zealand Vertical Datum 2016 (NZVD2016). The conversion value is represented by the attribute “O”, in metres. This conversion and NZVD2016 are formally defined in the LINZ standard [LINZS25009](http://www.linz.govt.nz/regulatory/25009). WGN53-NZVD2016 is published on a two arc-minute grid (approximately 3.6 kilometres) extending over the benchmarks that nominally define the extent of the Wellington 1953 vertical datum (174.4° E to 176.4° E, 39.1° S to 41.6° S). The height conversion grid models the difference between the Wellington 1953 vertical datum and NZVD2016 using the LINZ GPS-levelling marks. From the GPS-levelling marks the expected accuracy of WGN53-NZVD2016 is better than 2 centimetres (95% Confidence interval). More information on converting heights between vertical datums can be found [on the LINZ website](http://www.linz.govt.nz/data/geodetic-services/coordinate-conversion/converting-between-nzvd2016-nzgd2000-and-local-vertical-datums).

The TNK70-NZVD2016 grid enables the conversion of normal-orthometric heights from the Taranaki 1970 local vertical datum to the New Zealand Vertical Datum 2016 (NZVD2016). The conversion value is represented by the attribute “O”, in metres. This conversion and NZVD2016 are formally defined in the LINZ standard [LINZS25009](http://www.linz.govt.nz/regulatory/25009). TNK70-NZVD2016 is published on a two arc-minute grid (approximately 3.6 kilometres) extending over the benchmarks that nominally define the extent of the Taranaki 1970 vertical datum (173.6° E to 176.4° E, 38.3° S to 41.1° S). The height conversion grid models the difference between the Taranaki 1970 vertical datum and NZVD2016 using the LINZ GPS-levelling marks. From the GPS-levelling marks the expected accuracy of TNK70-NZVD2016 is better than 2 centimetres (95% Confidence interval). More information on converting heights between vertical datums can be found [on the LINZ website](http://www.linz.govt.nz/data/geodetic-services/coordinate-conversion/converting-between-nzvd2016-nzgd2000-and-local-vertical-datums).

New Zealand Quasigeoid 2016 Raster, provides users with a one arc-minute gridded (approximately 1.8 kilometres) raster image of the New Zealand Quasigeoid 2016 (NZGeoid2016). The relationship between the GRS80 ellipsoid and the New Zealand Vertical Datum 2016 (NZVD2016) is modelled by [NZGeoid2016] and is represented by the attribute “N”, in metres.(http://data.linz.govt.nz/layer/3418). NZVD2016 is formally defined in the LINZ standard [LINZS25009](http://www.linz.govt.nz/regulatory/25009). **Users may also be interested in transforming heights to any of the 13 historic local vertical datums used in New Zealand using the appropriate datum relationship grid displayed in the [NZ Height Conversion Index](http://data.linz.govt.nz/layer/3419).** More information on these transformations is available [on the LINZ website](http://www.linz.govt.nz/data/geodetic-services/coordinate-conversion/converting-between-nzvd2016-nzgd2000-and-local-vertical-datums).

This table is used to associate live and part-cancelled Records of Titles to current spatial parcels. There is a many to many relationship between titles and parcels. This table can be used to link [NZ Property Titles List](http://data.linz.govt.nz/table/51567), [NZ Property Title Estates List](http://data.linz.govt.nz/table/51566), or [NZ Property Title Owners List](http://data.linz.govt.nz/table/51564) to spatial parcel layers such as [NZ Parcels](http://data.linz.govt.nz/layer/51571), [NZ Linear Parcels](http://data.linz.govt.nz/layer/51570) or [NZ Primary Parcels](http://data.linz.govt.nz/layer/50772) . The match between live/part-cancelled titles and current parcels is more than 99%. **Note:** The originating data for parcel/title associations includes some non-official sources where the official data does not support a link. If you find an link that has a source of 'External' that you believe to be incorrect, please [contact us](http://data.linz.govt.nz/feedback). For more information about the nature of this association data see the [LINZ website](http://www.linz.govt.nz/about-linz/linz-data-service/dataset-information/cadastral-titles-data). For more information about this table, other property datasets, and how to relate them to each other, refer to the [Property Boundary and Ownership Data Dictionary](https://data.linz.govt.nz/document/11012).

The Canterbury region of New Zealand experienced a sequence of significant earthquakes during 2010 and 2011. These earthquakes occurred on 2010-09-04, 2011-02-22, 2011-06-13 and 2011-12-23. This layer contains coordinates computed from GNSS fast static and network RTK surveys undertaken after the Canterbury earthquakes. It also includes Lyttelton Vertical Datum 1937 and Christchurch Drainage Datum heights, derived from the GNSS data. **Users may also be interested in the simplified data in the companion layer [Canterbury Earthquake Geodetic Marks (2010, 2011) - Simple](http://data.linz.govt.nz/layer/1589).** These coordinates are only provisional. Analysis is ongoing as further data is collected. Coordinates were calculated using SNAP v2.3.61. Stations were constrained using coordinates calculated by GNS Science. Some coordinates were calculated from data provided by Christchurch City Council and other public and private organisations. No precise levelling data has been used. The uncertainty (one standard deviation) is 0.02m horizontally, and 0.03m vertically for NZGD2000 ellipsoidal heights. The uncertainty (one standard deviation) of the Lyttelton Vertical Datum 1937 and Christchurch Drainage Datum heights is 0.05m. The coordinates calculated prior to 2010-09-04 have been calculated from a combined adjustment including LINZ data and additional data provided by public and private organisations. These coordinates differ from those in the Geodetic Database and more accurately reflect the position of the mark immediately prior to the 2010-09-04 earthquake. The deformation model igns2011_working.grd calculated from a model (v4) provided by GNS Science on 28 April 2011 was used to remove secular deformation. Lyttelton Vertical Datum 1937 heights have been computed from NZGD2000 ellipsoidal heights by subtracting NZGeoid2009 geoid heights and adding an offset of 0.47m to bring in terms of Lyttelton Vertical Datum 1937. Christchurch Drainage Datum (CDD) heights have been computed in the Christchurch area from NZGD2000 ellipsoidal heights by subtracting NZGeoid2009 geoid heights and adding an offset of 0.523m (specifically calculated for Christchurch City) to bring in terms of Lyttelton Vertical Datum 1937 (for Christchurch) and a further offset of 9.04m to bring in terms of CDD. The model used to estimate whether movements greater than 2cm occurred at a mark (excluding those due to liquefaction or other localised deformation) after the 2010-09-04 earthquake was provided by GNS Science (Darfield_Sep2010_model_8.5_grid_displacements_calcs.xls). The model used to estimate whether movements greater than 2cm occurred at a mark (excluding those due to liquefaction or other localised deformation) after the 2011-02-22 earthquake was provided by GNS Science (Chch_Feb2011_geodetic_source_model_3.21.xls). The model used to estimate whether movements greater than 2cm occurred at a mark (excluding those due to liquefaction or other localised deformation) after the 2011-06-13 earthquake was provided by GNS Science (Chch_Jun2011_geodetic_source_model_0.4.xls). The model used to estimate whether movements greater than 2cm occurred at a mark (excluding those due to liquefaction or other localised deformation) after the 2011-12-23 earthquake was provided by GNS Science (Chch_Dec2011_geodetic_source_model_0.2.xls). These coordinates are suitable for use in surveys and other geospatial activities in Canterbury and Christchurch. **For full information about this dataset, see [the Canterbury earthquake information](http://www.linz.govt.nz/survey-titles/canterbury-earthquake/canterbury-earthquake/geodetic-survey-control-coordinates) on the LINZ website.**