QUESTIONNAIRE

Natural hazards – what do you think?

Natural hazards to be addressed in the Plan There are a lot of different hazards which are present on the West Coast, this table outlines the key hazards and some ideas about how they could be managed in Te Tai o Poutini Plan. Alongside these planning measures, there will continue to be Civil Defence initiatives and other Council work programmes to manage hazards.

The West Coast Councils are reviewing their District Plans through a comprehensive process that will create a new one District Plan for the West Coast – Te Tai o Poutini Plan. This Plan will have a life of 10-15 years and will shape the Coast for the future.

QUESTIONNAIRE

The West Coast has been subject to an increasing number of natural hazard events in the last few years, and this, along with changes to the Resource Management Act mean that an important part of the new plan will be managing the risk of natural hazards.

Waiho – Westland District

Jacobs River Church – Westland District

Approaches to natural hazard management When developing the approach for natural hazards we are intending to use the following strategies: b. Avoid the natural hazard –

If there are known natural hazards in areas that are not developed, zoning to prevent future development in these areas. In other words don’t put people and assets in harm’s way.

c. Accommodate the natural hazard – In some locations where the hazard can be managed with lower risk to people and property use measures that anticipate hazard risk – for example raising floor levels against flooding, provide alternative inundation pathways and require relocatable houses.

d. Protect from the natural hazard – Currently the most commonly used method for some types of natural hazard, this involves holding the line using natural buffers (e.g. sand dune restoration, wetland enhancement or creation, beach nourishment) or hard structures (e.g. seawalls, groynes).

a. Retreat from the natural hazard – Moving existing people or assets away from the hazard in a managed way over time, or as a consequence of damage after a hazard event. For example by zoning areas that people can move to, and having rules preventing rebuilding if property is destroyed by a hazard.

Granity – Buller District

Westport – Buller District

Type of hazard Example locations Example management methods

Coastal erosion

Granity, Rapahoe, Bruce Bay, Karoro, O’Neils,

Punakaiki, Hector/Ngakawau,

Barrytown

Require buildings to be relocatable

Identify areas for future managed retreat for existing development

Put in place “no build” hazard line

Identify areas where protection works are acceptable

Identify sources of rock for quarrying for protection works

Coastal inundation Carters Beach, Westport,

Blaketown

Require freeboard under dwellings, or dwellings to be lifted up

Identify areas for future managed retreat for existing development

Put in place “no build” hazard line

Identify inundation pathways

River flooding

Mokihinui, Westport, Hokitika, Greymouth,

Karamea, Franz Josef, Fox Glacier, Haast,

Cobden, Paroa

Require freeboard under dwellings, or dwellings to be lifted up

Identify floodways

Put in place “no build” hazard line

Identify areas for future managed retreat for existing development

Riverbank erosion Paroa (Salt Water Creek)

Riparian setbacks for building

Put in place “no build” hazard line

Require buildings to be relocatable

Identify areas for future managed retreat

Identify areas where protection works are acceptable

Identify sources of rock for quarrying for protection works

Earthquake (Alpine Fault)

Springs Junction, Inchbonnie, Franz Josef,

Put in place “no build” hazard line

Identify areas for future managed retreat for existing development

Require specific structural design

Tsunami Okarito, Karamea, Westport, Hokitika,

Greymouth, Port Jackson

Put in place “no build” hazard line

Landslide / Rock Slope Failure /

Debris Flow

Little Wanganui, Otira, Greymouth Hills, Cobden Hills, Runanga, Punakaiki,

Hector, Miko Coastline

Put in place “no build” hazard line

Identify areas for future managed retreat for existing development

Liquefaction as a result of an earthquake

Inangahua Junction, Westport, Karamea

Require specific foundation design for dwellings in high risk locations

Questions

1. Do you agree with the approaches to natural hazard management being considered as part of the Plan?

2. Are there other approaches you think we should consider?

3. Are there particular approaches of hazard types you think we should prioritise?

4. Are there particular places/types of hazard where you think an approach should be used?

5. Are there and other points you would like to raise about how we plan for natural hazards?

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What issues and information are you most interested in?

󠄌 Planning for our towns centres and settlements 󠄌 Rural issues

󠄌 Heritage and cultural values 󠄌 Natural hazards planning

󠄌 Vegetation, habitat, biodiversity and landscape