Earthquake fault hazard overlay

The Fault Hazard Overlay is shown on the maps in the Nelson Resource Management Plan (NRMP). The NRMP is used by Council to control the development of land to avoid or reduce the impact of natural hazards, including earthquakes.  The Fault Hazard Overlay as shown on the NRMP maps, and the associated fault hazard rules, are there to reduce the risk to people and property from ground rupture during an earthquake.

The Fault Hazard Overlay aims to avoid putting up buildings and other structures directly over an active fault line, to reduce the risk to people and property from ground rupture during an earthquake.  It acts as a flag to pay extra attention when developing a site or undertaking new building work in that area.

In 2013 Council received a report that recommended some changes to the earthquake Fault Hazard Overlay in the Nelson Resource Management Plan (NRMP).

Council wrote to affected property owners in August 2013 to advise them of the proposed changes and ask for any feedback or additional information that could be relevant. This new information has been used to develop an updated Fault Hazard Corridor on our GIS system. This Corridor will be the basis of a new Fault Hazard Overlay once we go through the formal process to change the NRMP.

Properties that are covered or partially covered by the new Fault Hazard Corridor or the current NRMP Fault Hazard Overlay will have statement to the effect included when a Land Information Memorandum (LIM) or Project Information Memorandum (PIM) is requested for that property. The Council will consider changing the NRMP to update the Fault Hazard Overlay in the planning maps.

Do you have questions about the Overlay or Corrior? Download the fact sheet here (89KB PDF)

Download the regional fault hazard map overview (6.5MB PDF)

Download the full report here (3.5MB PDF)

Download Appendix 1 (Maps) (34MB PDF) - warning: this is a large file and may take a while to open or download.

GIS Maps

You can search on this map for a closer view of the Fault Hazard Corridor. You can search on the full address, e.g. “123 Search Road SH6, Nelson” to bring up a specific property. Click on the "Legend" button top left to get more information.  The fault hazard overlay is in yellow and the fault hazard corridor is in pink.

Contact us

If you have trouble viewing the map or just want more information, you can contact us by email at customer.services@ncc.govt.nz or phone 546 0200.

Hazard Overlay Explanation

The Hazard Overlays in the Nelson Resource Management Plan are a trigger for the need to regulate some activities in specific parts of Nelson. But if you want to know more about the actual hazards on a particular site, they should NOT be regarded as a substitute for site specific information, including that held by the Council in its conditions book, subdivision files, site files, and GIS database.  Where purchase or development of a site is intended, you should always obtain the most accurate and up to date information held by the Council.  This can be done through Land or Project Information Memoranda requested from the Council.

Fault Hazard Overlay in the Nelson Resource Management Plan

The Fault Hazard Overlay was based on the best information available to the Council at the time the Plan was notified in the 1990s.  The Overlay contains those known fault traces considered to be active or potentially active.  Because most fault traces had not been accurately mapped, a wider area than that which could be affected by any fault rupture was indicated (the mapped areas are generally 150m wide).  As we gain a better understanding of the risks and location of fault traces, the extent of the overlay may be altered by plan changes in the future.  Those buying or thinking about developing properties located within the Fault Hazard Overlays should obtain the most up to date information held by the Council regarding the precise location of fault traces before they start.

 Fault Hazard Corridor on the Nelson City Council GIS system

 A new Fault Hazard Corridor has been developed based on recent updated geotechnical information, which more accurately maps where active fault lines are in Nelson.  In many cases the new Corridor sits over the top of the existing Overlay, and the NRMP Fault Hazard Overlay provisions apply. However, where properties are covered by the new Corridor and not the existing Overlay, the NRMP Fault Hazard Overlay provisions will not be triggered.  This Corridor will form the basis of a new Fault Hazard Overlay, but this needs a change to the NRMP first, through a formal plan change process.  Those purchasing or contemplating development of properties located within the Fault Hazard Corridor should obtain the most up to date information held by the Council regarding the predicted location of fault traces before they start.

Downloads

Do you have questions about the Overlay or Corrior?  Download the fact sheet here (89KB PDF)

Download the regional fault hazard map overview (6.5MB PDF)

Download the full report here (3.5MB PDF)

Download Appendix 1 (Maps) (34MB PDF) - warning: this is a large file and may take a while to open or download.