ArcGIS REST Services Directory Login | Get Token
Home > services > Public > Canterbury_Maps (MapServer) > Water Utility Layer Notes Help | API Reference
JSON

Layer: Water Utility Layer Notes (ID: 28)

Name: Water Utility Layer Notes

Display Field: TA_NAME

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>There are now a total of 67 territorial authorities in New Zealand. This updated total reflects the amalgamation of the seven territorial authorities (Rodney District, North Shore City, Waitakere City, Auckland City, Manukau City, Papakura District and Franklin District) into one new Auckland Council in 2010.Territorial authorities are the second tier of local government in New Zealand, below regional councils. The 67 territorial authorities comprise: 12 city councils, 53 district councils, the Auckland Council and the Chatham Islands Territory. Six territorial authorities (Auckland Council, Nelson City Council, Gisborne , Tasman , and Marlborough District Councils) also perform the functions of a regional council and thus are known as unitary authorities. Chatham Islands Territory undertakes only some of the functions of a regional council, and is therefore not a unitary authority. Territorial authority districts are not subdivisions of regions, and some of them fall within more than one region. Taupo District has the distinction of straddling the boundaries of four different regions. Territorial authorities are based on communities of interest and road access and administer local roading and reserves, sewerage, building consents, the land use and subdivision aspects of resource management, and other local matters.Territorial authorities are defined at meshblock and area unit level.The 2013 digital pattern includes the following territorial authorities: Territorial Authority CodeTerritorial Authority Name001Far North District002Whangarei District003Kaipara District011Thames-Coromandel District012Hauraki District013Waikato District015Matamata-Piako District016Hamilton City017Waipa District018Otorohanga District019South Waikato District020Waitomo District021Taupo District022Western Bay of Plenty District023Tauranga City024Rotorua District025Whakatane District026Kawerau District027Opotiki District028Gisborne District029Wairoa District030Hastings District031Napier City032Central Hawke's Bay District033New Plymouth District034Stratford District035South Taranaki District036Ruapehu District037Wanganui District038Rangitikei District039Manawatu District040Palmerston North City041Tararua District042Horowhenua District043Kapiti Coast District044Porirua City045Upper Hutt City046Lower Hutt City047Wellington City048Masterton District049Carterton District050South Wairarapa District051Tasman District052Nelson City053Marlborough District054Kaikoura District055Buller District056Grey District057Westland District058Hurunui District059Waimakariri District060Christchurch City062Selwyn District063Ashburton District064Timaru District065Mackenzie District066Waimate District067Chatham Islands Territory068Waitaki District069Central Otago District070Queenstown-Lakes District071Dunedin City072Clutha District073Southland District074Gore District075Invercargill City076Auckland099Area Outside Territorial AuthorityThe following have been significant changes to the territorial authority boundaries:YearChanges1989New Zealand’s local government structural arrangements were significantly reformed by the Local Government Commission in 1989. There were 205 territorial local authorities: 28 cities, 78 boroughs, 67 counties, 31 districts and 1 town district, as well as a multitude of ad-hoc authorities such as pest control boards, drainage boards, catchment boards, and domain and reserve boards.These were replaced by 74 territorial local authorities, 15 of which were cities and 58 districts. The exception was Chatham Islands County which retained its county status.1990Invercargill proclaimed a city.1992Nelson-Marlborough Regional Council abolished by a Local Government Amendment Act. Kaikoura District was transferred to the Canterbury Region. Nelson City, and Tasman and Marlborough districts became unitary authorities. 1995The Chatham Islands County was dissolved and reconstituted by a specific Act of Parliament as the "Chatham Islands Territory", with powers similar to those of territorial authorities and some functions similar to those of a regional council. This included the addition of territorial sea, a coastal buffer extending to 12 nautical miles from the coastline.1995Tasman District boundary extended to agree with the Tasman Region boundary at the 12 mile limit.1998Not Applicable category changed to Area Outside Territorial Authority2004Tauranga District changed to Tauranga City2006Banks Peninsula District merged into Christchurch City as a result of a Local Government Commission decision following a 2005 referendum. 2010Auckland Council established under the Local Government (Tamaki Makaurau Reorganisation) Act 2009. Rodney District, North Shore City, Waitakere City, Auckland City, Manukau City, Papakura District and Franklin District territorial councils and the Auckland Regional Council were abolished to become a unitary authority known as the Auckland Council. The area now consists of one city council (with statutory provision for three Maori councillors), four urban local councils, and two rural local councils:Rodney local council lost Orewa, Dairy Flat, and Whangaparaoa but retained the remainder of the old Rodney District. The split areas as well as the old North Shore City formed a Waitemata local council. Waitakere local council consists of the old Waitakere City as well as the Avondale area. Tamaki Makaura consists of the old Auckland City and Otahuhu (excluding CBD) Manukau local council consists of the urban parts of the old Manukau City and of the Papakura District. Hunua local council consists of the entire Franklin District, much of which was previously in the Waikato Region, along with rural areas of the old Papakura District and Manukau City. The entire Papakura District was dissolved between urban and rural councils.As at 1stJuly 2007, Digital Boundary data became freely available.Deriving of output FilesThe 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 2013 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 as a shapefile2. 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 1m tolerance to create generalised dataset. 5. Clip the high definition and generalised meshblock layers to the coastline using land water codes.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 Authorities, Regional Council, Urban Areas, Community Boards, Territorial Authority Subdivisions, Wards Constituencies and Maori Constituencies 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 3 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 datasetThe 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 ChecksA tolerance of 0.1 cm 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 0.1cm 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.GeneralisingTo create the generalised Meshblock layer the “Simplify Polygon” geoprocessing tool was used in ArcGIS, with the following parameters:Simplification Algorithm: POINT_REMOVEMaximum Allowable Offset: 1 metreMinimum Area: 1 square metreHandling Topological Errors: RESOLVE_ERRORSClipping of Layers to CoastlineThe processed feature class was then clipped to the coastline. The coastline was defined as features within the supplied Land2013 with codes and descriptions as follows:11- Island – Included12- Mainland – Included21- Inland Water – Included22- Inlet – Excluded23- Oceanic –Excluded33- Other – Included.Features were clipped using the Data Interoperability extension, 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 geographiesStatistics New Zealand then dissolved the ESRI meshblock feature classes to the higher geographies, for both the full and clipped dataset, 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. Export to MapInfo Format and ShapfilesThe data was exported to MapInfo and Shapefile format using ESRI's Data Interoperability extension Translation tool. Quality Assurance and rechecking of delivery filesThe 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.</SPAN></P></DIV></DIV>

Copyright Text: Statistics New Zealand

Default Visibility: false

MaxRecordCount: 1000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 999

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: true

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

  Iteminfo   Thumbnail   Metadata