Intended Purpose:Polygon layer of area affected by Tsunami Hazard Overlay (part of the Coastal Hazard Overlay), created for District Plan of Wellington City Council.Abbreviations/Acronyms:ePlan - "Electronic Plan" the web version of the District PlanPDP - Proposed District PlanIHP - Independent Hearings PanelWCC - Wellington City Council Refresh Rate (Data only):StaticOwnership:This data is owned by WCC District Planning Team, contact District.Plan@wcc.govt.nz for questions about this layer and its appropriate use cases.Stewardship:This data is maintained by WCC City Insights Team, contact cityinsightsgis@wcc.govt.nz for information about the creation of this layer and its maintenance.Custodianship:This data is stored on WCC's ArcGIS Online environment, administered by the Corporate GIS Team.Authoritative 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.
