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Climate Risk in Calga, New South Wales

Calga, New South Wales
Medium Risk
Updated May 2026

Calga faces moderate climate risks, primarily from bushfires and heatwaves. Flooding is also a concern due to heavy rainfall events. Residents should prepare for increasing temperatures and potential disruptions from extreme weather.

Overall Risk Score

55/100
Medium

Confidence: Medium

Hazard Breakdown

Flood
4.0
Bushfire
7.0
Heat
5.0
Coastal
1.0

Climate Hazard Breakdown for Calga

increasing

Flood

40/100

Calga faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is influenced by the area's topography and drainage infrastructure.

Key drivers:

  • ·Increased rainfall intensity
  • ·Urban development
increasing

Bushfire

70/100

Calga has a high bushfire risk due to its proximity to extensive bushland. Hot, dry conditions and strong winds exacerbate the risk during the bushfire season.

Key drivers:

  • ·Climate change
  • ·Dry vegetation
increasing

Heat

50/100

Calga experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This poses a risk to vulnerable populations.

Key drivers:

  • ·Climate change
  • ·Urban heat island effect
stable

Coastal

10/100

Calga has a very low coastal risk due to its inland location. Sea level rise and coastal erosion are not significant threats to this suburb.

Key drivers:

  • ·Distance from coast
stable

Wind

28/100

Moderate wind risk — East Coast Lows and gust fronts

stable

Storm

39/100

Moderate storm risk — severe thunderstorms and hail

stable

Social

21/100

Moderate social stability — mixed urban density

increasing

Energy

35/100

Moderate energy costs — climate-driven cooling demand

In-Depth Climate Risk Guides for Calga

Should I Buy

Property buying guide with climate risk assessment

Flood Risk

Flood zone mapping, historical events, and projections

Bushfire Risk

BAL assessment, vegetation proximity, and fire history

Climate Safety

Multi-hazard safety assessment to 2050

Storm Risk

Severe weather, hail, and wind risk analysis

Heat Risk

Extreme heat days, urban heat island, and cooling costs

Insurance Costs

Premium estimates and insurance availability

Investment Score

Climate-adjusted property investment analysis

Detailed Hazard Analysis

heat Risk

50/100

Calga experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This poses a risk to vulnerable populations.

Primary Drivers

  • ·Climate change
  • ·Urban heat island effect

Projections (RCP8.5)

2030

5.5

2050

6.0

Data source

flood Risk

40/100

Calga faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is influenced by the area's topography and drainage infrastructure.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Urban development
  • ·Inadequate drainage

Projections (RCP8.5)

2030

4.5

2050

5.0

Data source

coastal Risk

10/100

Calga has a very low coastal risk due to its inland location. Sea level rise and coastal erosion are not significant threats to this suburb.

Primary Drivers

  • ·Distance from coast

Projections (RCP8.5)

2030

1.0

2050

1.0

Data source

bushfire Risk

70/100

Calga has a high bushfire risk due to its proximity to extensive bushland. Hot, dry conditions and strong winds exacerbate the risk during the bushfire season.

Primary Drivers

  • ·Climate change
  • ·Dry vegetation
  • ·Increased ignition sources

Projections (RCP8.5)

2030

7.5

2050

8.0

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase due to bushfire and flood risks.

Price Impact

Property values may be affected by increasing climate risks.

Buyer Checklist

  • 1.Check bushfire risk assessment
  • 2.Review flood maps
  • 3.Assess property's heat resilience
  • 4.Consider insurance costs

Local Climate Evidence

Flood Evidence

Nearest Waterway
Local Creeks
Elevation Range
Variable
Flood Zone
Potentially affected areas near creeks

Local creeks can experience rapid rises in water levels during heavy rainfall events.

View council flood map

Bushfire Evidence

Distance to Bushland
Adjacent to extensive bushland
Planning Overlay
RFS Bush Fire Prone Land Map
Bushfire Prone Area
Yes

The area is designated as bushfire prone, requiring specific building standards for new constructions.

Heat Evidence

Avg January Max Temp
31.5°C
Heat Stress Days/Year
3 days

Heatwaves are becoming more frequent and intense in the region.

Coastal Evidence

Distance to Coast
40 km
Sea Level Rise Exposure
Not applicable
Erosion Risk
Not applicable

Historical Climate Events

2013
bushfireModerate

Bushfires impacted the region, causing property damage and evacuations.

Source
2016
floodModerate

Heavy rainfall caused flooding in low-lying areas, disrupting transport and damaging property.

Source
2019
bushfireMajor

Severe bushfires affected the region, leading to widespread evacuations and significant property loss.

Source
2020
heatwaveModerate

A prolonged heatwave resulted in increased hospital admissions and strain on infrastructure.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP8.5

HazardToday20302050
flood404.3(+0.3)4.5(+0.5)
bushfire707.4(+0.4)7.8(+0.8)
heat505.6(+0.6)6.0(+1.0)
coastal101.01.0

By 2030, Calga is projected to experience increased bushfire risk and more frequent heatwaves. Flooding risk will also rise due to more intense rainfall events.

CSIRO Climate Projections

Adaptation Recommendations

Improve Bushfire Preparedness

Immediate

Implement bushfire mitigation measures, such as clearing vegetation around properties and developing evacuation plans.

Est. cost: Low

Learn more

Upgrade Drainage Infrastructure

Near-term

Invest in upgrading drainage systems to manage increased rainfall intensity and reduce flood risk.

Est. cost: Medium

Learn more

Develop Heat Action Plan

Immediate

Create a heat action plan to protect vulnerable populations during heatwaves, including establishing cooling centers and providing public awareness campaigns.

Est. cost: Low

Learn more

Promote Water Conservation

Long-term

Encourage water conservation practices to manage water scarcity during prolonged dry periods.

Est. cost: Low

Learn more

About Calga's Climate Risk Profile

Calga, located in New South Wales, is exposed to a range of climate-related risks. The most significant threat is bushfire, given the suburb's proximity to dense bushland. Hot, dry conditions during the summer months create a high-risk environment, and residents should maintain awareness and preparedness during the bushfire season.

Flooding is another concern for Calga, particularly during periods of heavy rainfall. Local creeks and waterways can overflow, impacting properties and infrastructure. Effective drainage and flood mitigation measures are essential to minimize the impact of these events.

Heatwaves are becoming more frequent and intense, posing a risk to vulnerable populations, including the elderly and those with pre-existing health conditions. Residents should take precautions during heatwaves, such as staying hydrated and seeking cooler environments.

While coastal risks are minimal due to Calga's inland location, the broader impacts of climate change, such as disruptions to supply chains and increased insurance costs, may still affect the community. Adapting to these changes requires a proactive approach and community-wide collaboration.

Data sources: BOM · CSIRO · NSW RFS · NSW SES · Central Coast Council

Local Government Resources

Central Coast Council

Climate StrategyFlood MapsEmergency Services

Frequently Asked Questions

What are the main climate risks in Calga?

The main climate risks in Calga are bushfires, flooding, and heatwaves. The suburb's proximity to bushland increases the risk of bushfires, while heavy rainfall can lead to flooding. Heatwaves are becoming more frequent and intense, posing a risk to vulnerable populations.

How can I prepare my property for bushfires?

To prepare your property for bushfires, clear vegetation around your home, maintain gutters and roofs, and develop a bushfire survival plan. Ensure you have adequate insurance coverage and stay informed about fire danger ratings.

What should I do during a heatwave?

During a heatwave, stay hydrated, seek cooler environments, and avoid strenuous activities. Check on vulnerable neighbors and family members, and be aware of the signs of heatstroke.

Where can I find information about flood risks in Calga?

Information about flood risks in Calga can be found on the Central Coast Council website, including flood maps and emergency management plans. The NSW State Emergency Service (SES) also provides valuable resources and assistance during flood events.

Are there any community initiatives to address climate change in Calga?

The Central Coast Council is implementing various initiatives to address climate change, including promoting sustainable practices, investing in renewable energy, and developing climate adaptation strategies. Community groups and organizations also play a role in raising awareness and promoting climate action.

Get your property's risk report

This suburb assessment covers the area. For a precise address-level climate risk report for any specific property in Calga, use our analysis tool.

Analyse a Property in Calga →

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