Understanding coastal hazards is complex and often requires a unique approach
National and regional guidance across New Zealand require consideration of existing hazards, as well as future threats from sea-level rise, in the planning of new coastal developments. Most often the issues of concern are coastal inundation and erosion and how these may impact on both potential land parcels and reserve land. Councils are becoming less inclined to accept a 20m wide esplanade strip without having a gauge on what the specific hazards are at a site.
WHat are the restrictions?
Anyone wanting to develop near the coast should be considering the potential impact of coastal hazards at their site. For example, under the Auckland Unitary Plan the coastal erosion hazard area is defined as any land which is:
(a) within a horizontal distance of 20m landward from the top of any coastal cliff with a slope angle steeper than 1 in 3 (18 degrees); or
(b) at an elevation less than 7m above mean high water springs if the activity is within:
(i) Inner Harbours and Inner Hauraki Gulf: 40m of mean high water springs; or
(ii) Open west, outer and Mid Hauraki Gulf: 50m of mean high water springs;
These definitions can become problematic for people seeking to undertake activities near the coast. However, these can be reduced if a site-specific assessment is undertaken by a suitably qualified professional.
WHY DO I NEED A SITE-SPECIFIC ASSESSMENT?
A site specific coastal hazard assessment will allow you to understand what the issues at a site might be. This will help to inform what the potential yield of a site could be or inform any management regimes that need be developed in conjunction with the development
HOW CAN 4SIGHT HELP?
Our team of recognised professionals has extensive experience in coastal science and management. We have experience with undertaking hazards assessments and providing the appropriate management response. Experience from working both in the public and private sector has given us insight to the requirements to get the project over the line
OUR SERVICES INCLUDE:
- Coastal processes assessments;
- Site specific coastal hazard assessments;
- Coastal management advice and guidance;
- Project management, scoping and advice;
- Coastal monitoring and analysis; and
- Coastal planning and engineering review