Abstract:

The Coastal Inundation dataset maps the extent of sea water coverage expected around the coastal areas of the Auckland Region during storm events. It replaces the existing inundation extent currently (July 2018) published on Geomaps. The new data published has been derived from analysis carried out by NIWA in 2016/2017.

A description of the derivation of the data is here: U:\COO\IES\STW\SW CAMP\Flood Planning Team\Coastal Inundation Analysis\DELIVERY FILES 2017\Stage III\Onde Drive Folder\CoastalInundation\MemoDeliveryReport_Final.pdf

Lineage:

The flood levels derived by NIWA in the report Coastal Inundation by Storm Tides and Waves in the Auckland Region. June 2016. Technical Report 2016/2017 (Part 2)were used to establish the inundation water levels expected around the region. These levels were projected onto the land topography to establish the extent of coastal flooding.

The land topography was derived from the 2013 LiDAR survey or 2006 LiDAR survey. The additional analysis of the Parakai Harbour area (described in Part 3 of the above report) was not published, as a higher density of LiDAR land topography is expected to be available in 2018, which will improve the accuracy in this area when it becomes available.

Update Cycle:

Adhoc when improved data becomes available.

This data is available to the public on the Geomaps viewer and is copied into LIMs