20241212 09443000 1.0 FALSE 002 StatsNZ_RegionalCouncilBoundary_2025 1451540.032150 2114868.310800 5334628.856950 6242140.295900 1 Projected GCS_NZGD_2000 Linear Unit: Meter (1.000000) NZGD_2000_New_Zealand_Transverse_Mercator <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.3.0'><WKT>PROJCS["NZGD_2000_New_Zealand_Transverse_Mercator",GEOGCS["GCS_NZGD_2000",DATUM["D_NZGD_2000",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",1600000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",173.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",2193]]</WKT><XOrigin>-2147483647</XOrigin><YOrigin>-2147483647</YOrigin><XYScale>20000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.0001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>2193</WKID><LatestWKID>2193</LatestWKID></ProjectedCoordinateSystem> 150000000 5000 20241212 09361800 20241212 9364800 FGDC dataset 20241212 File Geodatabase Feature Class Esri ArcGIS 13.3.0.52636 Stats NZ - Regional Council Boundary (2025) This dataset is the definitive set of regional council boundaries for 2025 as defined by the Local Government Commission and/or regional councils themselves but maintained by Statistics New Zealand (the custodian). Only the North Island electoral boundaries are represented here. <DIV STYLE="text-align:Left;"><DIV><DIV>Updated on 11 December 2024General electorate boundaries are defined at mesh-block level. The regional council is the top tier of local government in New Zealand. There are 16 regional councils in New Zealand (defined by Part 1 of Schedule 2 of the Local Government Act 2002). Eleven are governed by an elected regional council, while five are governed by territorial authorities (the second tier of local government), who also perform the functions of a regional council and are known as unitary authorities.These unitary authorities are Auckland Council, Nelson City Council, and Gisborne, Tasman, and Marlborough District Councils. The Chatham Islands Council also performs some of the functions of a regional council, but is not strictly a unitary authority. Unitary authorities act as regional councils for legislative purposes. Regional councils are responsible for administrating many environmental and transport matters, such as land transport planning and harbour navigation and safety. Regional councils were established in 1989 after the abolition of the 22 local government regions. The Local Government Act 2002 requires the boundaries of regions to conform, as far as possible, to one or more water catchments. When determining regional boundaries, the Local Government Commission considered regional communities of interest when selecting which water catchments to include in a region. It also considered factors such as natural resource management, land use planning, and environmental matters.Some regional council boundaries are coterminous with territorial authority boundaries, but there are several exceptions. An example is Taupo District, which is geographically split between four regions, although most of its area falls within the Waikato Region. Where territorial local authorities straddle regional council boundaries, the affected area is statistically defined by complete statistical areas. In general, however, regional councils contain complete territorial authorities.Auckland Council unitary authority was formed in 2010, under the Local Government (Tamaki Makarau Reorganisation) Act 2009, replacing the Auckland Regional Council and seven territorial authorities.The seaward boundary of any coastal regional council is the twelve-mile New Zealand territorial limit.Regional councils are defined at mesh-block and statistical area level.</DIV></DIV></DIV> Statistics New Zealand Region Regional Council Boundary <DIV STYLE="text-align:Left;"><DIV><DIV>Do not supply this data to people or organisations outside the Bay of Plenty Regional Council. This data is freely available on <A href="https://datafinder.stats.govt.nz:443/search/" STYLE="text-decoration:underline;">https://datafinder.stats.govt.nz/search/ </A>and people should source the information from there themselves.Permitted usesStatistics New Zealand must be acknowledged as the source of the boundaries.Uses not permittedUsers are not permitted to change the accuracy of the boundaries and supply them to another party.LiabilityWhile care has been taken to compile these boundary coordinates, Statistics New Zealand gives no warranty that the data supplied is free from error. Statistics New Zealand shall not be liable for any loss suffered through the use, directly or indirectly, of any information, product or service.</DIV></DIV></DIV> 1 171.203858 179.212877 -33.835531 -42.140456 The digital meshblock boundaries are stored and maintained by Land Information New Zealand (LINZ) within their Landonline database, and ArcInfo Suite. Statistics NZ maintains the meshblock pattern by checking it against LINZ’s cadastral pattern. Non-alignment of meshblock and cadastral boundaries are one of a number of reasons for meshblock boundary adjustments. Other reasons include requests from local authorities, Local Government Commission, Electoral Representation Commission, and to make Census of Population and Dwellings enumeration processes easier. Once all changes are prepared, Statistics NZ then passes the requests for changes to the meshblock pattern on to LINZ for the electronic changes to take place. From the generalised meshblock pattern, higher geographies were dissolved using the dissolve tool in the Arc GIS suite to create multiple output datasets. Deriving output files: The original vertices delineating the meshblock boundary pattern were digitised in 1991 from 1:5,000 scale urban maps and 1:50,000 scale rural maps. The magnitude of error of the original digital points would have been in the range of +/- 10 metres in urban areas and +/- 25 metres in rural areas. Where meshblock boundaries coincide with cadastral boundaries the magnitude of error will be within the range of 1–5 metres in urban areas and 5–20 metres in rural areas. This being the estimated magnitude of error of Landonline. The creation of high definition and generalised meshblock boundaries for the 2015 digital pattern and the dissolving of these meshblocks into other geographies/boundaries were completed within Statistics New Zealand using ESRI's ArcGIS desktop suite and the Data Interoperability extension with the following process: 1. Import data and all attribute fields into an ESRI File Geodatabase from LINZ. 2. Run geometry checks and repairs. 3. Run Topology Checks on all data (Must Not Have Gaps, Must Not Overlap), detailed below. 4. Generalise the meshblock layers to a 1-metre tolerance to create generalised dataset. 5. Clip the high definition and generalised meshblock layers to the coastline using land water codes (excluding non-digitised meshblocks). 6. Dissolve all four meshblock datasets (clipped and unclipped, for both generalised and high definition versions) to higher geographies to create the following output data layers: Area Unit, Territorial Authority, Regional Council, Urban Area, Community Board, Territorial Authority Subdivision, Ward, Constituency, Māori Constituency, General Electoral District, and Māori Electoral District for the four datasets. 7. Complete a frequency analysis to determine that each code only has a single record. 8. Re-run topology checks for overlaps and gaps. 9. Export all created datasets into MapInfo and Shapefile format using the Data Interoperability extension to create 4 output formats for each file. 10. Quality Assurance and rechecking of delivery files. The High Definition version is similar to how the layer exists in Landonline with a couple of changes to fix topology errors identified in topology checking. The following quality checks and steps were applied to the meshblock pattern: Translation of ESRI Shapefiles to ESRI geodatabase dataset: The meshblock dataset was imported into the ESRI File Geodatabase format, required to run the ESRI topology checks. Topology rules were set for each of the layers. Topology Checks: A tolerance of 0.001 metre was applied to the data, which meant that the topology engine validating the data saw any vertex closer than this distance as the same location. A default topology rule of “Must Be Larger than Cluster Tolerance” is applied to all data – this would highlight where any features with a width less than 0.001m exist. No errors were found for this rule. Three additional topology rules were applied specifically within each of the layers in the ESRI geodatabase – namely “Must Not Overlap”, “Must Not Have Gaps” and “Area Boundary Must Be Covered By Boundary Of (Meshblock)”. These check that a layer forms a continuous coverage over a surface, that any given point on that surface is only assigned to a single category, and that the dissolved boundaries are identical to the parent meshblock boundaries. Topology Checks Results: There were no errors in either the gap or overlap checks. Generalising: To create the generalised Meshblock layer the “Simplify Polygon” geoprocessing tool was used in ArcGIS, with the following parameters: Simplification Algorithm: POINT_REMOVE Maximum Allowable Offset: 1 metre Minimum Area: 1 square metre Handling Topological Errors: RESOLVE_ERRORS Clipping of Layers to Coastline: The processed feature class was then clipped to the coastline. The coastline was defined as features within the supplied LANDWATER indicator with codes and descriptions as follows: 11- Island – Included 12- Mainland – Included 21- Inland Water – Included 22- Inlet – Excluded 23- Oceanic – Excluded 31- Other – Included. Non-digitised meshblocks were excluded from this process. Features were clipped using the ArcGIS attribute filter tool. The attribute filter was used on both the generalised and high definition meshblock datasets creating four meshblock layers. Each meshblock dataset also contained all higher geographies and land-water data as attributes. Note: Meshblock 0017001, which is classified as island, was excluded from the clipped meshblock layers as most of this meshblock is oceanic. Dissolve meshblocks to higher geographies: Statistics New Zealand then dissolved the ESRI meshblock feature classes to the higher geographies, for both the full and clipped datasets, generalised and high definition datasets. To dissolve the higher geographies, a model was built using the dissolver, aggregator and sorter tools, with each output set to include geography code and names within the Data Interoperability extension. Quality Assurance and rechecking of delivery files: The feature counts of all files were checked to ensure all layers had the correct number of features. This included checking that all multipart features had translated correctly in the new file. 10 EPSG 6.15(9.0.0) StatsNZ_RegionalCouncilBoundary_2025 Feature Class 10 OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. SHAPE SHAPE Geometry 0 0 0 Feature geometry. Esri Coordinates defining the features. REGC2025_V1_00 REGC2025_V1_00 String 2 0 0 REGC2025_V1_00_NAME REGC2025_V1_00_NAME String 254 0 0 REGC2025_V1_00_NAME_ASCII REGC2025_V1_00_NAME_ASCII String 200 0 0 LAND_AREA_SQ_KM LAND_AREA_SQ_KM Double 8 0 0 AREA_SQ_KM AREA_SQ_KM Double 8 0 0 SHAPE_Length SHAPE_Length Double 8 0 0 Length of feature in internal units. Esri Positive real numbers that are automatically generated. SHAPE_Area SHAPE_Area Double 8 0 0 Area of feature in internal units squared. Esri Positive real numbers that are automatically generated. Simple FALSE 10 TRUE FALSE