Technical Report

Technical Reports

The technical reports will help identify opportunities and constraints when considering where potential future development may be possible in the District and will provide valuable baseline information for both the Spatial Plan as well as the draft District Plan.



  • Geo-tech hazard reports
    • Land instability
  • Regional Council information
    • Land hazards
    • Coastal hazards
    • Flooding
  • Contaminants in soil


Geo-tech reports

ENGEO Limited has undertaken research and a desktop analysis on geotechnical hazards within the Kaipara District. These reports will help identify where development may occur and what will be required to satisfy Council as to the appropriateness of the proposed development and whether any controls are needed.

Land instability

Geological characteristics and soil types in the District mean that some areas are unsuitable for development. Inappropriate earthwork activities and/or the removal of vegetative cover is also considered due to its contribution to land instability.

Council has commissioned area specific Geotechnical Hazard Assessment Reports, which include land stability.


Northland Regional Council information

Land hazards

This information about coastal and urban land hazards is to assist those who are planning property development in the district. Land hazards are risks from natural hazards including land instability, flooding, coastal hazards and fire.

Land hazard maps The Regional Geographical Information System (GIS) mapping system displays comprehensive land hazard maps for the Kaipara District. It also takes into consideration climate change.

Coastal hazards

Erosion, landslips and seawater flooding are the dominant natural coastal hazards along the District's coastline. Coastal erosion is either a long term trend or a significant short term shoreline fluctuation, especially on sand dune-backed coasts. Landslip is directly associated with coastal erosion where the geology is relatively weak and prone to slope failure (mapping still to be completed).  Severe coastal storms or tsunami produced waves can temporarily flood low‑lying coastal areas. The effects of climate change are likely to increase hazards in the coastal zone.


Tropical storms and high rainfall intensities expose many areas to flooding. There are obvious floodway areas plus areas that are susceptible to ponding. A Flood Susceptibility Report was undertaken and included in the District Plan whilst the Regional Council has undertaken the Priority Rivers Project which shows flooding areas. Our GIS maps are used where specific property information is requested and in assessing building consents.

Northland Regional Council has Hazard Maps which show the above potential land hazards, coastal hazards and flooding


Contaminants in soil

The National Environmental Standard for Assessing and Managing Contaminants in Soil to Protect Human Health ensures that land proposed for development is assessed for soil contamination. Council administers the Standard and considers it when it has been recognised that a particular activity has occurred on a property either previously or currently.