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Tauranga City Plan

8B  Purpose of the Coastal Hazard Erosion Plan Area (CHEPA) and Coastal Protection Plan Area

Updated 8 March 2017

The purpose of the Coastal Hazard Erosion Plan Area is to identify areas along the City’s open coastline where coastal erosion will or is likely to occur. Three distinct hazard risk zones have been identified which comprise the Coastal Hazard Erosion Plan Area. These risks zones are:

  1. Current Erosion Risk Zone (CERZ);
  2. 50-year (2060) Erosion Risk Zone (50-year ERZ);
  3. 100-year (2110) Erosion Risk Zone (100-year ERZ).

The Current Erosion Risk Zone is the area of land that is subject to, or likely to be subject to, adverse effects from the maximum potential short-term duneline fluctuation and wind erosion. In other words, erosion caused by annual storm effects.

The 50-year Erosion Risk Zone lies adjacent to and landward of the Current Erosion Risk Zone and encompasses the area of land that is subject to, or is likely to be subject to, a nett shoreline retreat from sea-level rise to 2060.

The 100-year Erosion Risk Zone lies adjacent to and landward of the 50-year Erosion Risk Zone and encompasses the area of land that is subject to, or is likely to be subject to, a nett shoreline retreat from sea-level rise to 2110.

The purpose of the Coastal Protection Plan Area is to identify areas of undeveloped future urban zoned land along the open coast from Papamoa East through to the Kaituna River mouth. A hazard zone of 74 metres from the toe of the foredune is adopted to identify the actual area likely to be at risk from coastal erosion or inundation within a 100-year period. 


Definitions in this section

the city

coastal hazard erosion plan area

coastal protection plan area

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