Regional Land Elevation Maps: Auckland

Regional Land Elevation Maps:
Auckland
Published in conjunction with the report
Preparing New Zealand for rising seas:
Certainty and Uncertainty
November 2015
This document contains a number of maps showing areas in New Zealand that are low-lying and close to the
coast, with a focus on urban areas. Land elevation in these maps has been measured using Light Detection and
Ranging (LiDAR) technology, and is shown above mean high water springs (MHWS-10).
Areas that are both low-lying and close to the coast are, in general, most vulnerable to sea level rise. This is
certainly the case when it comes to coastal flooding and rising groundwater. Erosion is rather different – a
shoreline need not be low-lying to be eroded.
The elevation bands shown on the maps are not hazard zones and should not be interpreted as such. Such
maps aid in identifying areas at risk as the sea rises. But local characteristics are also vitally important. For
instance, a low-lying area close to the coast may be protected by a headland or a natural barrier such as a sand
dune. And groundwater will only be a problem if it is connected to the sea.
Detailed elevation surveys, using LiDAR technology, have not been carried out for the entire New Zealand
coastline. As a result, maps for some urban areas are not available.
For further information please see the full report and accompanying NIWA technical report at www.pce.parliament.nz
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The elevation bands shown on this map are not hazard zones
Land Elevation
< 50cm
50–100cm
100–150cm
Omaha
Warkworth
Snells Beach
0
1
2
4
Kilometres
Low-lying coastal land in Omaha, Snells Beach, and Warkworth.
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Land Elevation
< 50cm
50–100cm
100–150cm
Kawau
Parua Inlet
Helensville
0
1
2
4
Kilometres
Low-lying coastal land in Helensville.
The elevation bands shown on this map are not hazard zones
Beach
Haven
Northcote
Devonport
Herne Bay
AUCKLAND
Mission Bay
Parnell
Kingsland
Remuera
Mount
Eden
One Tree
Hill
New Lynn
Mount
Wellington
Otahuhu
Māngere
Bridge
Māngere
Land Elevation
< 50cm
50–100cm
Auckland
Airport
100–150cm
0
1
2
4
Kilometres
Low-lying coastal land in Auckland.
Papatoetoe
The elevation bands shown on this map are not hazard zones
¯
Takapuna
¯
Land Elevation
< 50cm
50–100cm
100–150cm
Waiheke Island
0
1
2
4
Kilometres
Low-lying coastal land on Waiheke Island.
The elevation bands shown on this map are not hazard zones
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The elevation bands shown on this map are not hazard zones
Manukau Harbour
Waiuku
Land Elevation
< 50cm
0
1
2
4
50–100cm
Kilometres
Low-lying coastal land in Waiuku.
100–150cm