Climate Risk Profile: Collaroy Plateau, NSW
Collaroy Plateau faces moderate risks from flooding, bushfires, heatwaves and coastal hazards. Climate change is expected to exacerbate these risks, particularly flooding and heatwaves. Residents should prepare for more frequent extreme weather events.
Overall Risk Score
Confidence: Medium
Hazard Breakdown
Climate Hazard Breakdown for Collaroy Plateau
Flood
Collaroy Plateau faces a moderate risk of flooding, primarily from heavy rainfall events and localised stormwater runoff. The risk is influenced by the suburb's topography and proximity to drainage systems.
Key drivers:
- ·Increased rainfall intensity
- ·Urban development
Bushfire
Collaroy Plateau has a high bushfire risk due to its proximity to Garigal National Park and other areas of dense vegetation. Hot, dry summers and strong winds exacerbate the risk.
Key drivers:
- ·Dry vegetation
- ·High temperatures
Heat
Collaroy Plateau experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
Key drivers:
- ·Rising global temperatures
- ·Urban heat island effect
Coastal
Collaroy Plateau faces a moderate coastal risk due to potential sea level rise and storm surges impacting nearby coastal areas. While the suburb itself is elevated, access routes and infrastructure could be affected.
Key drivers:
- ·Sea level rise
- ·Increased storm intensity
Wind
Moderate wind risk — East Coast Lows and gust fronts
Storm
Moderate storm risk — severe thunderstorms and hail
Social
Moderate social stability — mixed urban density
Energy
Moderate energy costs — climate-driven cooling demand
In-Depth Climate Risk Guides for Collaroy Plateau
Property buying guide with climate risk assessment
Flood zone mapping, historical events, and projections
BAL assessment, vegetation proximity, and fire history
Multi-hazard safety assessment to 2050
Severe weather, hail, and wind risk analysis
Extreme heat days, urban heat island, and cooling costs
Premium estimates and insurance availability
Climate-adjusted property investment analysis
Detailed Hazard Analysis
heat Risk
Collaroy Plateau experiences moderate heat risk, with increasing average temperatures and more frequent heatwaves projected. This poses a risk to vulnerable populations.
Primary Drivers
- ·Rising global temperatures
- ·Urban heat island effect
Projections (RCP8.5)
2030
5.0
2050
5.5
flood Risk
Collaroy Plateau faces a moderate risk of flooding, primarily from heavy rainfall events and localised stormwater runoff. The risk is influenced by the suburb's topography and proximity to drainage systems.
Primary Drivers
- ·Increased rainfall intensity
- ·Urban development
- ·Aging drainage infrastructure
Projections (RCP8.5)
2030
7.0
2050
7.5
coastal Risk
Collaroy Plateau faces a moderate coastal risk due to potential sea level rise and storm surges impacting nearby coastal areas. While the suburb itself is elevated, access routes and infrastructure could be affected.
Primary Drivers
- ·Sea level rise
- ·Increased storm intensity
Projections (RCP8.5)
2030
5.5
2050
6.0
bushfire Risk
Collaroy Plateau has a high bushfire risk due to its proximity to Garigal National Park and other areas of dense vegetation. Hot, dry summers and strong winds exacerbate the risk.
Primary Drivers
- ·Dry vegetation
- ·High temperatures
- ·Strong winds
Projections (RCP8.5)
2030
7.0
2050
7.0
What This Means for Property Owners
Insurance Outlook
Insurance premiums may increase due to climate risks.
Price Impact
Properties in high-risk areas may experience price fluctuations.
Buyer Checklist
- 1.Check flood maps and bushfire prone land overlays.
- 2.Assess property's vulnerability to heatwaves.
- 3.Inquire about council's climate adaptation plans.
- 4.Review insurance coverage for climate-related events.
Local Climate Evidence
Flood Evidence
- Nearest Waterway
- Narrabeen Lagoon
- Elevation Range
- 60-120m
- Flood Zone
- Low to Moderate
Some areas near drainage lines are susceptible to flash flooding during heavy rainfall.
View council flood mapBushfire Evidence
- Distance to Bushland
- Adjacent to Garigal National Park
- Planning Overlay
- RFS Bush Fire Prone Land Map
- Bushfire Prone Area
- Yes
Properties bordering Garigal National Park are at higher risk.
Heat Evidence
- Avg January Max Temp
- 27.5°C
- Heat Stress Days/Year
- 2 days
Heatwaves typically occur in January and February.
Coastal Evidence
- Distance to Coast
- 2 km
- Sea Level Rise Exposure
- Indirectly exposed through impacts on coastal infrastructure
- Erosion Risk
- Low
Historical Climate Events
Bushfires impacted areas near Collaroy Plateau, requiring evacuations and property protection.
SourceSevere storms caused flash flooding and damage to properties in Collaroy Plateau.
SourceA small bushfire broke out near Garigal National Park, posing a threat to nearby properties.
SourceHeavy rainfall caused localised flooding and disruption to traffic in Collaroy Plateau.
SourceClimate Outlook to 2050
Projections based on CSIRO and BOM climate modelling. Scenario: RCP8.5
| Hazard | Today | 2030 | 2050 |
|---|---|---|---|
| flood | 65 | 7.0(+0.5) | 7.5(+1.0) |
| bushfire | 70 | 7.0 | 7.0 |
| heat | 45 | 5.0(+0.5) | 5.5(+1.0) |
| coastal | 50 | 5.5(+0.5) | 6.0(+1.0) |
By 2030, Collaroy Plateau is projected to experience a moderate increase in overall climate risk, with flooding and heat risks increasing noticeably. Coastal risks also increase slightly. Bushfire risk remains relatively stable.
CSIRO Climate ProjectionsAdaptation Recommendations
Improve Drainage Infrastructure
Near-termUpgrade stormwater drainage systems to handle increased rainfall intensity and reduce flood risk.
Est. cost: Medium
Learn moreBushfire Risk Management
ImmediateImplement bushfire risk reduction measures such as vegetation management and community education programs.
Est. cost: Medium
Learn moreHeatwave Preparedness
Near-termDevelop and implement heatwave response plans to protect vulnerable populations during extreme heat events.
Est. cost: Low
Learn moreCoastal Protection Measures
Long-termImplement coastal protection measures to mitigate the impacts of sea level rise and storm surges on nearby coastal areas.
Est. cost: High
Learn moreAbout Collaroy Plateau's Climate Risk Profile
Collaroy Plateau, located on the Northern Beaches of Sydney, is exposed to a range of climate-related risks. The suburb's proximity to bushland increases its vulnerability to bushfires, particularly during hot and dry summer months. Climate change is projected to increase the frequency and intensity of bushfire events, posing a significant threat to properties and residents.
Flooding is another concern for Collaroy Plateau, with heavy rainfall events leading to localised flooding and stormwater runoff. The suburb's topography and drainage systems contribute to the flood risk, which is expected to worsen with climate change due to increased rainfall intensity.
Heatwaves are becoming more frequent and intense in Collaroy Plateau, posing a risk to vulnerable populations such as the elderly and those with pre-existing health conditions. Rising average temperatures and the urban heat island effect contribute to the heat risk, which is projected to increase further with climate change.
While Collaroy Plateau is elevated, sea level rise and storm surges could impact nearby coastal areas and infrastructure, potentially affecting access routes and services. Coastal erosion is also a concern for the broader Northern Beaches region, which could indirectly impact Collaroy Plateau.
Addressing these climate risks requires a combination of mitigation and adaptation measures. Reducing greenhouse gas emissions is crucial to slow down the pace of climate change, while adaptation strategies such as improving drainage infrastructure, managing bushfire risk, and implementing heatwave response plans are essential to protect the community.
Data sources: BOM · CSIRO · NSW RFS · Northern Beaches Council
Local Government Resources
Northern Beaches Council
Frequently Asked Questions
What are the main climate risks facing Collaroy Plateau?
Collaroy Plateau faces risks from flooding, bushfires, heatwaves, and coastal hazards. Climate change is expected to exacerbate these risks.
How is the council addressing climate change in Collaroy Plateau?
The Northern Beaches Council has a climate strategy that includes measures to reduce greenhouse gas emissions and adapt to the impacts of climate change.
What can I do to prepare for bushfires in Collaroy Plateau?
You can prepare for bushfires by clearing vegetation around your property, having a bushfire survival plan, and staying informed about fire danger ratings.
How can I protect myself during a heatwave in Collaroy Plateau?
During a heatwave, stay indoors in air-conditioned environments, drink plenty of water, and avoid strenuous activities.
Will climate change affect property values in Collaroy Plateau?
Climate change could potentially affect property values in Collaroy Plateau, particularly in areas that are more vulnerable to climate-related hazards.
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