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JACOBS_Nat_Haz_Shoreline_2017
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Coastal Erosion Hazard Zones (CEHZ) as described in the Coastal Erosion and Sea Water Inundation Assessment Technical Report (IZ105900-005-NC-RPT-002 | 1) by Jacobs New Zealand Limited - 21 June 2018.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>While the Waimakariri District Council has taken all reasonable care in providing correct information, all information should be considered as being illustrative and indicative only. Your use of this information is entirely at your own risk. You should independently verify the accuracy of any information before taking any action in reliance upon it.</SPAN></P><P><SPAN>Read full disclaimer </SPAN><A href="https://openmaps-waimakariri.hub.arcgis.com:443/pages/disclaimer" STYLE="text-decoration:underline;"><SPAN>here</SPAN></A><SPAN>.</SPAN></P><P><SPAN>Coastal Erosion Hazard Zones (CEHZ) calculated from the following formula to meet the requirements of NZCPS Policy 24: CEHZ = (LT X T) + SL + ST + DS Where LT = Rate of long-term shoreline movement T = Time frame (e.g. 50 & 100 years) SL = Sea level rise erosion over time frame for each agreed projection of sea level rise to be used ST = Storm term storm erosion DS = Dune stability factorThe methodology used in the investigations meets the requirements of the NZCPS and CRPS for identification of coastal hazards, and follows the guidance for inclusion of sea level rise (SLR) given in MfE(2017). The Coastal Erosion Hazard Zone (CEHZ) mapping indicates that for the majority of the district’s coastline, the continued Waimakariri River sand supply will dominate over SLR induced erosion for over 100 years under all SLR scenarios. Only at the northern end of the district around Waikuku would a CEHZ be required to be located landward of the existing dune vegetation limit, and then only most likely by around 20 m under the most extreme RCP8.5+ SLR scenario. In no location under any SLR scenario over the next 130 years does the projected erosion extend into developed areas landward of the existing dune at Waikuku and Kairaki. Refer to the report mentioned in the summary for further information.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Update Frequency:</SPAN></P><P><SPAN>As required.</SPAN></P><P><SPAN STYLE="font-weight:bold;">Point of Contact:</SPAN></P><P><SPAN>Waimakariri District Council</SPAN></P><P><SPAN STYLE="font-weight:bold;">Lineage:</SPAN></P><P><SPAN>Coastal Erosion Hazard Zones (CEHZ) as described in the Coastal Erosion and Sea Water Inundation Assessment Technical Report (IZ105900-005-NC-RPT-002 | 1) by Jacobs New Zealand Limited - 21 June 2018.</SPAN></P></DIV></DIV></DIV>
Jacobs New Zealand Limited
Level 2, Wynn Williams Building
47 Hereford Street
Christchurch Central
PO Box 1147, Christchurch 8140
New Zealand
T +64 3 940 4900
F +64 3 940 4901
www.jacobs.com
Waimakariri District Council; Coastal Hazards;
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This document has been prepared on behalf of, and for the exclusive use of Jacobs’ client, and is subject to, and issued in accordance with, the provisions of the contract between Jacobs and the client. Jacobs accepts no liability or responsibility whatsoever for, or in respect of, any use of, or reliance upon, this document by any third party. </SPAN></P><P><SPAN>Licensed under </SPAN><A href="https://creativecommons.org:443/licenses/by/4.0" STYLE="text-decoration:underline;"><SPAN>Creative Commons Attribution 4.0 Internationa</SPAN></A><SPAN>l by Waimakariri District Council.</SPAN></P></DIV></DIV></DIV>
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