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GISADMIN.Ruawai_RiverFloodHazardZone_100yr_19thDec2024
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Projected
GCS_NZGD_2000
Linear Unit: Meter (1.000000)
NZGD_2000_New_Zealand_Transverse_Mercator
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ItemDescription
Esri ArcGIS 13.3.0.52636
Ruawai 100 Year +CC River Flood Hazard Zone
The 100 year + CC (climate change) river flood extent, the area potentially susceptible to river flooding in a 1% AEP +CC / 100 year ARI + CC, for the Ruawai catchment developed by Water Technology in 2024.
<DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="text-align:Justify;"><SPAN /></P><P STYLE="text-align:Justify;"><SPAN>A TUFLOW hydraulic model was developed to simulate flood response across the Raupo Drainage Scheme in Kaipara District. This includes the town of Ruawai and surrounds, which are protected from the Wairoa River with a series of stopbanks and floodgates. These structures were included in the model, which was simulated for design events including the 1% (100 year), 2% (50 year), 10% (10 year) and 20% AEP (5 year), as well as the 1% AEP with Climate Change (100 year + CC) using a rainfall-on-grid approach.</SPAN></P><P STYLE="text-align:Justify;"><SPAN>The model outputs are able to identify the potential flooding extents, depths and velocities and can be used to assess the impact on the built environment, infrastructure, and community as well as, subsequently, aid in the development of effective mitigation measures.</SPAN></P><P STYLE="text-align:Justify;"><SPAN>This layer is the 100 year + CC (climate change) extent river flood hazard polygon output from the model.</SPAN></P><P STYLE="text-align:Justify;"><SPAN STYLE="font-weight:bold;text-decoration:underline;">Other Details:</SPAN></P><P STYLE="text-align:Justify;"><SPAN>Name of the layer in sde: GISADMIN.Ruawai_RiverFloodHazardZone_100yr_19thDec2024</SPAN></P><P STYLE="text-align:Justify;"><SPAN>Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025</SPAN></P></DIV></DIV></DIV>
Water Technology, NRC, KDC
River Flood Hazard Zone
100 Year CC Extent
Ruawai
NRC
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The flood extent shown is produced at a catchment scale and is not intended to depict specific flooding details for individual properties. We recommend obtaining site-specific engineering assessments to assess flood risk.</SPAN></P></DIV></DIV></DIV>
Enterprise Geodatabase Feature Class
dataset
EPSG
6.15(9.0.0)
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Simple
FALSE
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TRUE
TRUE
GISADMIN.Ruawai_RiverFloodHazardZone_100yr_19thDec2024
Feature Class
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OBJECTID
OBJECTID
OID
4
10
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Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
8
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Feature geometry.
Esri
Coordinates defining the features.
Catchment
Catchment
String
254
0
0
ModelID
Model ID
String
254
0
0
PublishedYear
Year
Integer
4
10
0
StormDuration
Storm Duration
String
254
0
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Hazard
Hazard
String
254
0
0
Consultant
Consultant
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Disclaimer
Disclaimer
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Shape.STArea()
Shape.STArea()
Double
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Shape.STLength()
Shape.STLength()
Double
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20250219