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Whenua

Whenua is central to much Māori GIS mahi. A cadastral parcel, Māori land block or farm boundary may be necessary for a particular legal or management task, but none of those geometries defines the relationship between people and whenua.

Whenua carries whakapapa, history, occupation, loss, responsibility, use, memory and aspirations for future generations. Mapping can support those relationships when it is clear about what each geometry represents and when it does not allow the state land system to become the unquestioned base truth.

This page focuses on practical whenua mapping while keeping legal, cultural, historical and operational representations distinct.

See the workflow in practice​

Three Matawhenua resources are useful alongside this page:

These are learning and presentation examples. They do not replace local mandate, knowledge or the need to preserve the underlying source and context.

What whenua mapping can support​

Depending on the kaupapa, maps may help with:

  • whānau, hapū, iwi or trust decision making
  • understanding land interests and responsibilities
  • access and on-the-whenua mahi
  • papakāinga, farming, forestry or restoration planning
  • hazards and resilience
  • Treaty and historical research
  • hui and wānanga
  • interactions with councils, Crown agencies, funders and other external systems

The external process is one use of the map, not the definition of the whenua.

Cadastral geometry is a state representation​

The cadastral survey system is extremely useful when you need to work with titles, parcels, planning rules, roads and other legal or administrative systems. It also represents a particular way of dividing and recording land.

Do not describe parcel geometry as neutral.

It has a purpose, history, scale and legal effect. It can be technically authoritative for cadastral questions while remaining an incomplete representation of Māori relationships to the same place.

This distinction lets a Māori GIS use cadastral data confidently without allowing property geometry to define the kaupapa.

Not all lines mean the same thing​

RepresentationWhat it is useful forWhat not to assume
cadastral parcellegal parcel context and spatial relationshipsthat it represents all ownership, whakapapa or cultural interests
Māori land blockMāori Land Court record and governance contextthat its geometry is identical to current parcels or every historical extent
council boundary or zonestatutory and administrative processesthat it represents a Māori rohe
rohe or cultural extenta relationship or area represented for an agreed kaupapathat it is exclusive, fixed or legally surveyed
project areascope of a particular piece of mahithat the extent has wider cultural or political authority
indicative areaorientation or contextual communicationthat it can support precise decisions

Where a line exists because a system requires one, say so.

Core public sources​

Useful external sources include:

These sources answer particular questions. They do not replace iwi, hapū, whānau or local knowledge.

Organisational and Māori-held information may include:

  • rohe or areas represented for specific kaupapa
  • trust or incorporation planning areas
  • land-use blocks and leases
  • access tracks and worksites
  • locally confirmed ingoa wāhi
  • historical and cultural information where there is appropriate authority to hold it

Māori land blocks and parcels​

You may need both Māori Land Court blocks and cadastral parcels.

A useful pattern is to:

  1. keep block and parcel data as separate source layers
  2. create a linkage table only where the work genuinely needs a relationship between them
  3. record the source and date for the relationship
  4. avoid presenting a derived match as a legal conclusion unless confirmed through the appropriate record
  5. keep the reason for the linkage visible so later users do not assume it is a permanent truth

See Māori land for more detail.

A technical schema is not a cultural model​

For a maintained working layer, fields such as these can be useful:

  • id
  • name
  • representation_type
  • purpose
  • source
  • source_ref
  • checked_date
  • status
  • sensitivity
  • notes

Treat that as an information-management structure. It is not a taxonomy of whenua relationships.

Where Māori-held context is required, store only what is appropriate to the kaupapa and access level. A general whenua layer does not need every owner name, whakapapa detail or piece of kōrero attached to it.

Practical workflow​

  1. Start with the kaupapa and relationship to the whenua.
  2. Identify what Māori-held information or existing decisions are relevant.
  3. Choose the external legal, cadastral, environmental or planning sources that help with the question.
  4. Keep different representation types separate.
  5. Check names and interpretation through the appropriate local knowledge and mandate.
  6. Create different outputs for different uses rather than one universal map.
  7. Record what each map claims and what it does not.

Imagery and change​

Historic and current imagery can help people see change in access, waterways, coastlines, vegetation, settlement and land use.

It is evidence from a camera at a particular time. It does not explain by itself why the change occurred or what it meant to people connected to the whenua.

Use capture date, source and alignment limitations with the map, and place imagery alongside kōrero and other historical sources where the kaupapa calls for it.

Useful resources include:

Maps for hui​

A whenua map for hui should support people to orient, remember, question and decide. It should not look more certain than the kōrero.

Useful elements can include:

  • familiar awa, coastlines, roads or settlements
  • locally appropriate ingoa wāhi
  • only the layers relevant to the kaupapa
  • a visible date and version
  • a short source and purpose note
  • a clear explanation of any line or shaded area

See Maps for hui and wānanga.

Sensitivity and reuse​

Whenua information can be sensitive because of:

  • disputed or overlapping relationships
  • wāhi tapu, urupā and other significant places
  • personal ownership information
  • internal decisions
  • information supplied for one kaupapa but not approved for another

Keep restricted source layers separate from publication derivatives. Do not assume a public map can safely contain the full working dataset.

Useful sources​

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