Tsunami - 1:100 year scenario inundation extent (High Hazard Area) - 2024 District Plan

Intended Purpose: Polygon dataset of areas affected by Tsunami Hazard Overlay (part of the Coastal Hazard Overlay) created for the Wellington City Council District Plan as part of the District Plan Review Process. This layer is part of the Wellington City 2024 District Plan. Abbreviations/Acronyms: DP - District Plan ePlan - "Electronic Plan" the web version of the District Plan. Data Security: Public, data that can be freely shared and accessed without restrictions. Refresh Rate (Data only): Static. Ownership: This data is owned by WCC District Planning Team, contact [e-mail] for questions about this layer and its appropriate use cases. Ownership specifies legal or administrative control over the content. Stewardship: This data is maintained by WCC City Insights Team, contact [e-mail] for information about the creation of this layer and its maintenance. Stewardship addresses the ongoing care, maintenance, and management of the content. Custodianship: This data is maintained by WCC City Insights Team, contact [e-mail] for information about the creation of this layer and its maintenance. Authoratative Data Sources (Data only): GNS modelled tsunami hazard for the Wellington City council (Burbridge et al. 2021) and provided coastal tsunami hazard maps for the Proposed District Plan. Further data changes were made as part of the District Plan Review Process. Summary of Data Collection (Data only): 0.05m was considered to be the limit of acceptable nuisance flooding that could be managed by existing stormwater controls. Water depths of less than 0.05m were removed from Burbridge et al. 2021 modelled data, and the output raster data smoothed to create the Coastal Tsunami Hazard Overlay. All post-processing of raster data for layers is consistent with methodology used for the WCC Proposed District Plan.