Purpose: This data has been published to support the Waikato Regional Hazards Portal. This data is part of the Earthquakes and Landslides theme.Its purpose is to provide WRC with a region-wide liquefaction vulnerability assessment to identify areas of land susceptible to liquefaction as required in the RMA. The technical report and resulting map outputs will be used to inform planning and consenting processes. This work was supported by funding from the Waikato Regional Council. This assessment has been made at a broad scale across the entire region and is intended to approximately describe the typical range of liquefaction vulnerability across neighbourhood-sized areas. It is not intended to precisely describe liquefaction vulnerability at a property level.Statement:The Level A assessment is a desktop study that is mainly based on the geological map (QMAP, 3rd edition 2020). To assess the potential hazard of lateral spreading, a geomorphic mapping was carried out using the NZDEM North Island 25 metre Digital Elevation Model available from LINZ data service. The hydrology network and water bodies data came from LINZ data service as well. The seismic hazard model used for the assessment is based on the National Hazard Model (Stirling, 2012) and the NZTA Bridge Manual methodology (NZTA, 2018). No regional seismic hazard model has been developed for the assessment, which means that we did not take into account the potential spatial variability in seismic hazard across the region.  The assessment does not include the geotechnical field investigations available on the NZ Geotechnical Database. However, the database has been consulted to check the properties of the ground and compare it with the geological information available.  Depth to groundwater was based on data from the Waikato Regional Council groundwater monitoring network up to June 2021. The National Water Table (NWT) model developed by GNS Science (Westerhoff, 2018) was also used in areas not covered by the groundwater network. However, the NWT model was used with very low weight in the spatial analysis due to its uncertainty.Intended Use Scale:Data should not be used at scales greater than 1:25,000.Data Use Limits:See 'Statement' above.Data Disclaimers: The presence of a hazard zone on this map does not guarantee the existence of such a hazard, nor does the lack of information preclude the existence of a hazard or risk. Waikato Regional Council, while providing the information in good faith, accepts no responsibility for any loss, damage, injury, or loss in value of any person, property, service or otherwise resulting from hazards or knowledge of hazards in the Waikato Region.The standard Waikato Regional Council Disclaimer applies to this data “While Waikato Regional Council has exercised all reasonable skill and care in controlling the contents of this information, Waikato Regional Council accepts no liability in contract, tort or otherwise howsoever, for any loss, damage, injury or expense (whether direct, indirect or consequential) arising out of the provision of this information or its use by you."WRC Metadata: See full metadata by searching for HAZARD.sdeadmin.HAZ_LIQUEFACTION_LEVEL_A under HAZARDS - Regional Hazards Portal - GIS LayersTerms of Use:This work is licensed under a Creative Commons Attribution-NoDerivatives 4.0 International License.Should users wish to distribute or publish derivatives or modified versions of this data then they must seek a data use agreement through WRC first.See the Waikato Regional Hazards Portal Terms of use here Waikato Regional Hazards Portal - Terms of use | Waikato Regional Council.