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Service Description: Riverine flood maps show residents the effect of widespread and prolonged rainfall over a large catchment area. Riverine flood events may cause elevated water levels at our rivers and creeks for several days. Flash flooding can also occur following intense localised rainfall and with little warning. These maps provide an estimate of how and where water will rise during a flood event. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and our community. Extreme event: Low chance of occurrence, 0.05% annually, 3% in a 70 year period. Examples (between major and extreme): • Feb 1893 - All major river catchments (Riverine Flooding) • March 2012 - Alexandra HeadlandKawana/Mooloolaba/Buddina/Warana/Alexandra Headland (Flash Flood) • May 2015 - Beerwah/Glasshouse (Flash Flood) Major event: Medium chance of occurrence, 1% annually, 50% in a 70 year period. Examples: • Feb 2020 - Yaroomba/Mt Coolum/Marcoola (Flash Flood) • Feb 1992 - Maroochy River (Riverine Flood) • June 1983 - Nambour (Flash Flood) • Mar 1955 - Kenilworth (Riverine Flood) Moderate event: High chance of occurrence, 10% annually, 99.9% in a 70 year period. Examples: • Jan 2012 - Nambour (Riverine Flood) • Jan 2011 & Jan 2013 - Kenilworth (Riverine Flood) Minor event: Extreme chance of occurrence, 40% annually, 100% in a 70 year period. Map published August 2021. Base terrain information is 2014/2018 aerial survey, enhanced with new Development DEMs where available. This mapping presents surge heights above the Highest Astronomical Tide to show the effects of additional surge from the ocean during meteorological (storm) conditions. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and the community. Examples: • Dec 2020 - All low lying coastal areas (0.3-0.4 m above HAT) The maps were updated with new information in August 2021.

Map Name: Emergency Preparedness

Legend

All Layers and Tables

Dynamic Legend

Dynamic All Layers

Layers:

• Minor Event (0)
  • Flood Hazard (1)
  • Overland Flow (2)
• Moderate Event (3)
  • Flood Hazard (4)
  • Overland Flow (5)
• Major Event (6)
  • Flood Hazard (7)
  • Overland Flow (8)
  • Potential Flooding outside of modelled extents (9)
• Extreme Event (10)
  • Flood Hazard (11)
  • Overland Flow (12)
  • Potential Flooding outside of modelled extents (13)
• Storm Tide Flood (14)

Description:

Service Item Id: 24a532caad6e40c6983048b63a4e24a8

Copyright Text: Sunshine Coast Regional Council

Spatial Reference: 102100  (3857)


Single Fused Map Cache: false

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YMin: -3110295.040712285
XMax: 1.7075413765291616E7
YMax: -3040260.3234790824
Spatial Reference: 102100  (3857)

Full Extent:

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YMin: -3116740.091682229
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Spatial Reference: 102100  (3857)

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Emergency Preparedness
Author: Sunshine Coast Regional Council
Comments: Riverine flood maps show residents the effect of widespread and prolonged rainfall over a large catchment area. Riverine flood events may cause elevated water levels at our rivers and creeks for several days. Flash flooding can also occur following intense localised rainfall and with little warning. These maps provide an estimate of how and where water will rise during a flood event. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and our community. Extreme event: Low chance of occurrence, 0.05% annually, 3% in a 70 year period. Examples (between major and extreme): • Feb 1893 - All major river catchments (Riverine Flooding) • March 2012 - Alexandra HeadlandKawana/Mooloolaba/Buddina/Warana/Alexandra Headland (Flash Flood) • May 2015 - Beerwah/Glasshouse (Flash Flood) Major event: Medium chance of occurrence, 1% annually, 50% in a 70 year period. Examples: • Feb 2020 - Yaroomba/Mt Coolum/Marcoola (Flash Flood) • Feb 1992 - Maroochy River (Riverine Flood) • June 1983 - Nambour (Flash Flood) • Mar 1955 - Kenilworth (Riverine Flood) Moderate event: High chance of occurrence, 10% annually, 99.9% in a 70 year period. Examples: • Jan 2012 - Nambour (Riverine Flood) • Jan 2011 & Jan 2013 - Kenilworth (Riverine Flood) Minor event: Extreme chance of occurrence, 40% annually, 100% in a 70 year period. Map published August 2021. Base terrain information is 2014/2018 aerial survey, enhanced with new Development DEMs where available. This mapping presents surge heights above the Highest Astronomical Tide to show the effects of additional surge from the ocean during meteorological (storm) conditions. This information is important for emergency preparedness as it assists with disaster management and planning, for both council and the community. Examples: • Dec 2020 - All low lying coastal areas (0.3-0.4 m above HAT) The maps were updated with new information in August 2021.
Subject: Flood Hazard Mapping for Disaster Management.
Category:
Keywords: SCRC,SCC,Flood,Disaster,Riverine,Flood Model,Stormtide,Flood Zone,Emergency Preparedness,Overland Flow,Event,Flood Hazard,HAT
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Child Resources:   Info   Dynamic Layer

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