The geographic location and diversity of the Waikato region means that it is subject to many natural hazards, such as flooding, coastal processes, volcanic activity and earthquakes. Where there is people and development, the presence of these natural hazards results in risk. In order to effectively manage risk to people, communities and infrastructure, natural hazard information is essential.
Natural hazards have the potential to cause disruption, damage properties and take lives. So it is vital to be prepared – visit https://www.getthru.govt.nz/(external link).
Natural hazards can also affect the value and insurability of properties. This is important to consider when purchasing a property, particularly with climate change projected to increase the frequency and severity of events such as river flooding and coastal erosion and inundation.
The Waikato Regional Hazards Portal has been developed to improve access to hazard information, and to help the public, local authorities and others make informed decisions about their exposure to natural hazards.
The Portal contains all available (suitably robust) spatial hazard information that is held by Waikato Regional Council, as well as some data from other organisations. New and updated information will be added as required. It is intended to partially replace the online request for flood hazard information, although this service will still be available to answer specific questions and to provide flood levels (referencing the Cross section ID provided in the Portal).
The information contained in this Portal is of different levels of accuracy, reflected in the visible display scale of the data. For some data, you will need to zoom in or out in order to make it visible – see the Layer Descriptions in the sidebar for a list of the data in each tab.
Also included in the Layer Descriptions section is an “Information Level” classification. This classification is to inform users of the applicability and accuracy of each of the data sets. For example, local scale flood depth data can be used to inform minimum floor levels for building consents, but the regional scale flood hazard data is only suitable as a ‘heads up’. The following table describes each of the Information Levels:
|Property to local scale
Information that is suitable to be used for resource/building consents or for District Plans. This information is generally based on detailed modelling or hazard mapping that takes the effects of climate change into account (if applicable) and/or is based on all possible scenarios and their associated likelihoods and impacts (probabilistic assessment).
|Local to regional scale
Information that is suitable to be used for District or Regional Plans. This information is generally based on modelling or hazard mapping, but may not take the effects of climate change into account and/or may be based on only one scenario (deterministic assessment).
Information that is suitable to be used for the Regional Policy Statement or regional scale studies/projects. This information is generally based on previous event or historic mapping/aerial imagery.
Information that is to be used for information purposes only. This information is generally based on national scale mapping, preliminary regional scale mapping, or susceptibility from other existing data (e.g. LiDAR data).
Get answers to some Frequently Asked Questions.
For information about the data, see metadata here HAZARDS - Regional Hazards Portal - GIS Layers(external link).
To request spatial data, submit an online request form, here https://bps.waikatoregion.govt.nz/online-services/new/RequestForService/step/1(external link) , with “Maps and GIS data” as the subject line.
To request additional natural hazard information, or if you have any questions, submit an online request form, here https://bps.waikatoregion.govt.nz/online-services/new/RequestForService/step/1(external link), with “Flooding and hazards” as the subject line.
Also note that the Portal is not intended as a substitute for a Land Information Memoranda (LIM), which can be obtained from your local district/city council.