Responding to our Natural Hazards

Complete the form below to tell us how to use the latest hazards information to help shape the Nelson Plan (resource management plan).

Please note that feedback may be used in various reports and formats that could be made publicly available, and may ultimately be used to inform Council decisions relating to natural hazards. This includes any natural hazards feedback which identifies specific properties or locations by their address.  However, your name and email address will only be used for administrative purposes relating to the subject matter and will not be made publicly available.  You have the right to access and correct any personal information.

The risk of flood hazard to people and property varies across Nelson depending on a combination of water depth and the force of moving water (velocity).

 


Through the Nelson Plan we can manage the community’s risk to flood hazard through either avoiding or mitigating new development.

How we respond could be different depending on if the location is in an urban environment or a rural environment.  In the urban environment, there are existing built up/developed areas as well as areas that are zoned for development (e.g. residential, commercial, industrial) but are not yet built.

Mitigation can include locating and designing new buildings to keep their occupants safe during a flood event.  Design solutions could include raising ground levels where this does not increase off site hazard risk, floodable basements or ground floor car parking with habitable rooms above, houses on stilts, etc.
 

Urban Environment - existing built up / developed areas

Options include:

Avoid new development in identified high flood hazard areas. 
This means new development is not allowed in existing urban locations to avoid placing buildings and their occupants in areas of high flood risk.

Mitigate new development in identified high flood hazard areas. 
This means new development is allowed in high flood hazard areas in existing urban locations but buildings are designed to keep their occupants safe.

 


Urban Environment - existing areas zoned for development but not yet built / developed

Options include:

Avoid new development in identified high flood hazard areas.
This means new development is not allowed in existing undeveloped locations to avoid placing new buildings and their occupants in areas of high flood risk.

Mitigate new development in identified high flood hazard areas.
This means new development is allowed in high flood hazard areas in existing undeveloped locations but new buildings are designed to keep their occupants safe.

 


Rural Environment

Options could include avoiding more vulnerable activities such as new houses in flood risk areas, but allow ancillary development such as farm buildings. What do you think?

The current Nelson Resource Management Plan requires buildings to be set 5m back from an identified and precisely located fault line.  Council sought expert advice on the location of fault lines in 2013 which recommended that the setback should be revised to 10m, in keeping with national guidance.

Please note for between 5m and 10m: on the condition that a more specific assessment is provided covering seismic engineering design (a risk based approach)

The current Nelson Resource Management Plan does not include liquefaction as a hazard. However, Council seeks geotechnical advice at the time of subdivision consent (under the Resource Management Act 1991) or building consent (under the Building legislation) in liquefaction areas.

There are different options to address liquefaction hazard when erecting new buildings in liquefaction areas such as:

  • rely on the Building legislation at the time of building consent
  • include controls in the Nelson Plan and require a land use consent
  • different consent types or controls depending on the type of building
           e.g a garage or shed versus a house or commercial building