Emergency management support

Toitū Te Whenua can help central and local government agencies before, during and after an emergency event.

We can help with

Emergency response

Emergency recovery

For more information about the support available from Toitū Te Whenua please contact resilience@linz.govt.nz

Emergency response


Maps can be used to help plan an emergency response after a natural disaster. We maintain the authoritative national record of the country's physical features – New Zealand's topography – vital information to brief first responders or plan evacuations.

Topo maps and data are freely available from our LINZ Data Service.


New Zealand's most up-to-date property, land and marine data is freely available to download in a variety of formats or access as a service from our LINZ Data Service.

Data available includes:

  • Topographic data and maps
  • Hydrographic data and charts
  • Property data including boundaries and land ownership
  • Place names, street address and roads data
  • Crown land and Crown property data
  • Aerial imagery

Aerial imagery and height data

We will work with response agencies to coordinate the capture and distribution of aerial imagery and LiDAR height data during an emergency, which can help assess the event and inform recovery.

Existing aerial imagery and elevation models are freely available from our LINZ Data Service.

Tides, charts and navigation

Tide predictions are used to assess the potential impact of tsunami and floods, and determine if and when evacuations should take place. We provide daily tide predictions for 64 sites around the coast of New Zealand.

We maintain charts and navigation information which is fundamental for safety at sea. Chart digital images can be downloaded from the LINZ Data Service.

An emergency may also create new hazards to mariners. We issue Notices to Mariners to advise of important matters affecting navigational safety. You can subscribe to these notices on our Charts website.


Bathymetry data can be used for tsunami modelling, assessing coastal erosion, and shoreline mapping. We provide access to hydrographic and bathymetric data around the coast of New Zealand, and in selected areas of Antarctica and the South-West Pacific.

Indexes showing the bathymetric data we hold are available on our LINZ Data Service.

Sea level data downloads for sites around New Zealand.

Emergency recovery

Crown owned land, waterways and lakes

Our Land & Property Teams in Wellington and Christchurch have technical expertise under the Public Works Act 1981 and provide centralised property acquisition, management and disposal services for other Crown agencies.

The Land & Property Team can confirm availability of Crown land in an emergency and facilitate authorisation of drone footage on Crown owned land with Department of Conservation.

Data to show Crown land we manage is freely available on the LINZ Data Service.

Demolition and land remediation

We have an established demolition team with significant operational experience gained responding to Christchurch earthquakes. The team has proven systems and specialist contractors available to provide advice on Crown property, including the:

  • safe, effective and cost efficient demolition of damaged or at risk buildings
  • land remediation services in high risk, post event environments
  • support in securing damaged or at risk buildings.

Monitoring earth movements

Horizontal and vertical coordinate and positioning information can provide precise details on the extent and impact of earth movement caused by an event. Our positioning experts were deployed directly after the Kaikoura eqarthquake to provide updated geodectic control to help support recovery.

We recommend all height data reference the New Zealand Vertical Datum (NZVD 2016), for example for identifying coastal hazard zones or coastal assets at risk from storm tide inundation.

Read more about modernising height data.

Property rights and surveying

When an event such as an earthquake has caused the land to move, there can also be an impact on property boundaries. We can help to determine the impact of earth movement on property boundaries, and give guidance for surveyors to help rebuild. We can also help identify and coordinate surveyors to monitor buildings and structures during recovery. 

Property valuation

A disaster could affect the value of your property. The rating valuation process in Canterbury was significantly affected by the devastating 2010 and 2011 earthquakes.

We do not carry out valuations, however the Office of the Valuer-General at Toitū Te Whenua sets standards for the rating valuations and audits local authorities to ensure values are consistent across New Zealand.