Service Description: The purpose of this information is to identify areas exposed to dynamic coastal inundation caused by wave run-up and overtopping during present-day extreme sea level events. The mapping supports hazard planning by estimating the inland extent of wave effects using empirical formula and hydrodynamic wave modelling.

Service ItemId: 1516a398a3e74bb88199597a40fdf65c

Has Versioned Data: false

Max Record Count: 2000

Supported query Formats: JSON

Supports applyEdits with GlobalIds: False

Supports Shared Templates: True

All Layers and Tables

Layers:

• Wave Run Up 2020 Regional Line (1)
• Wave Run Up 2020 Extent (2)
• Wave Run Up 2050 SSP5 4.5M Regional Line (4)
• Wave Run Up 2050 SSP5 4.5M Extent (5)
• Wave Run Up 2050 SSP5 8.5M Regional Line (7)
• Wave Run Up 2050 SSP5 8.5M Extent (8)
• Wave Run Up 2080 SSP5 4.5M Regional Line (10)
• Wave Run Up 2080 SSP5 4.5M Extent (11)
• Wave Run Up 2080 SSP5 8.5M Regional Line (13)
• Wave Run Up 2080 SSP5 8.5M Extent (14)
• Wave Run Up 2130 SSP5 4.5M Regional Line (16)
• Wave Run Up 2130 SSP5 4.5M Extent (17)
• Wave Run Up 2130 SSP5 8.5M Regional Line (19)
• Wave Run Up 2130 SSP5 8.5M Extent (20)
• Wave Run Up 2130 SSP5 8.5H+ Regional Line (22)
• Wave Run Up 2130 SSP5 8.5H+ Extent (23)

Description:

This dataset presents the extent of dynamic coastal inundation caused by wave run-up under present-day 1% Annual Exceedance Probability (AEP) conditions. The mapping identifies areas along the Nelson City coastline where wave effects may cause temporary flooding at the coastal edge.

Covers nine coastal inundation cells:

• Waimea Inlet

• Tāhunanui

• Rocks Road

• Nelson CBD

• Nelson Haven

• Boulder Bank to Pepin Island

• Delaware Bay estuary

• Delaware open coast

• Oananga Bay

Finalised December 2024, based on 2021 LiDAR and 2020-2024 modelling.

Developed by Tonkin & Taylor Ltd for Nelson City Council and recorded as Nelson Coastal Inundation Mapping Update, Phase B (v1), December 2024.

Derived from 2021 LiDAR data and wave run-up values from T+T (2020). Empirical methods were used for most shorelines; hydrodynamic modelling was applied to Rocks Road and Wakapuaka Flats. Mapping does not account for future shoreline changes or topography-induced overland flow paths.

Copyright Text: Developed by Tonkin & Taylor Ltd for Nelson City Council.

Spatial Reference: 2193 (2193)

Initial Extent:

XMin: 1611360.62760216
YMin: 5423267.77675545
XMax: 1650724.79049784
YMax: 5451114.79234455
Spatial Reference: 2193 (2193)

Full Extent:

XMin: 1617072.02
YMin: 5424552.4396
XMax: 1645013.3981
YMax: 5449830.1295
Spatial Reference: 2193 (2193)

Units: esriMeters

Child Resources:   Info   SharedTemplates

Supported Operations:   Query   ConvertFormat   Get Estimates