Description: The 10 year river flood extent, the area potentially susceptible to river flooding in a 10% AEP / 10 year ARI, for the Ruawai catchment developed by Water Technology in 2024.The 50 year river flood extent, the area potentially susceptible to river flooding in a 2% AEP / 50 year ARI, for the Ruawai catchment developed by Water Technology in 2024.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.Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.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.This layer is the 10 year extent river flood hazard polygon output from the model.Other Details:Name of the layer in sde: GISADMIN.Ruawai_RiverFloodHazardZone_10yr_19thDec2024Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.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.This layer is the 50 year extent river flood hazard polygon output from the model.Other Details:Name of the layer in sde: GISADMIN.Ruawai_RiverFloodHazardZone_50yr_19thDec2024Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.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.This layer is the 100 year + CC (climate change) extent river flood hazard polygon output from the model.Other Details:Name of the layer in sde: GISADMIN.Ruawai_RiverFloodHazardZone_100yr_19thDec2024Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: Coastal Flood Hazard Zone 0 (Current), the area potentially susceptible to coastal flooding in a 1% AEP, for the Ruawai catchment developed by Water Technology in 2024.Coastal Flood Hazard Zone 1 (50 years), the area potentially susceptible to coastal flooding in a 2% AEP + 0.6 m SLR, for the Ruawai catchment developed by Water Technology in 2024.Coastal Flood Hazard Zone 2 (100 years), the area potentially susceptible to coastal flooding in a 1% AEP + 1.2 m SLR, for the Ruawai catchment developed by Water Technology in 2024.Coastal Flood Hazard Zone 3 (100 years + Rapid Sea Level Rise Scenario), the area potentially susceptible to coastal flooding in a 1% AEP + 1.66 m SLR, for the Ruawai catchment developed by Water Technology in 2024.Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.Additional Coastal Hazard scenarios (listed below) were simulated without rainfall, to present the implications of sea level rise on the district.CFHZ0 - 1% AEP SurgeCFHZ1 - 2% AEP Surge + 0.6 m SLRCFHZ2 - 1% AEP Surge + 1.2 m SLR CFHZ3 - 1% AEP Surge + 1.66 m SLRThe 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.The model output for this layer is the flood hazard polygon for Coastal Flood Hazard Zone 0 (Current).Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.Additional Coastal Hazard scenarios (listed below) were simulated without rainfall, to present the implications of sea level rise on the district.CFHZ0 - 1% AEP SurgeCFHZ1 - 2% AEP Surge + 0.6 m SLRCFHZ2 - 1% AEP Surge + 1.2 m SLR CFHZ3 - 1% AEP Surge + 1.66 m SLRThe 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.The model output for this layer is the flood hazard polygon for Coastal Flood Hazard Zone 1 (50 years).Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Description: 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.Additional Coastal Hazard scenarios (listed below) were simulated without rainfall, to present the implications of sea level rise on the district.CFHZ0 - 1% AEP SurgeCFHZ1 - 2% AEP Surge + 0.6 m SLRCFHZ2 - 1% AEP Surge + 1.2 m SLR CFHZ3 - 1% AEP Surge + 1.66 m SLRThe 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.The model output for this layer is the flood hazard polygon for Coastal Flood Hazard Zone 2 (100 years).Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025
Name: Coastal Flood Hazard Zone 3 (100 years + Rapid Sea Level Rise Scenario)
Display Field: Catchment
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: 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.Additional Coastal Hazard scenarios (listed below) were simulated without rainfall, to present the implications of sea level rise on the district.CFHZ0 - 1% AEP SurgeCFHZ1 - 2% AEP Surge + 0.6 m SLRCFHZ2 - 1% AEP Surge + 1.2 m SLR CFHZ3 - 1% AEP Surge + 1.66 m SLRThe 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.The model output for this layer is the flood hazard polygon for Coastal Flood Hazard Zone 3 (100 years + Rapid Sea Level Rise Scenario).Data provided by: Nicole Basher (Rivers and Natural Hazards) Data Published by: Divya Published on: Feb 2025