Climate Risk in Brooklyn, NSW

Brooklyn, New South Wales· UNKNOWN· 2083
Medium Risk
Updated Mar 2026

Brooklyn, NSW, faces moderate climate risks, primarily from flooding, heatwaves, and coastal inundation. The suburb's proximity to the Hawkesbury River and bushland areas contributes to these vulnerabilities. Climate change is expected to exacerbate these risks in the coming decades.

Overall Risk Score

5.2/10
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.5
Bushfire
4.0
Heat
5.0
Coastal
5.3

Detailed Hazard Analysis

heat Risk

5.0/10

Brooklyn is experiencing increasing average temperatures and more frequent heatwaves. This poses a risk to vulnerable populations, especially during summer.

Primary Drivers

  • ·Global warming
  • ·Urban heat island effect

Projections (RCP8.5)

2030

5.5

2050

6.0

Data source

flood Risk

6.5/10

Brooklyn faces a moderate risk of flooding due to its proximity to the Hawkesbury River and surrounding waterways. Heavy rainfall events can lead to riverine and flash flooding.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Sea level rise
  • ·Urban development

Projections (RCP8.5)

2030

7.0

2050

7.5

Data source

coastal Risk

5.3/10

Brooklyn is exposed to coastal risks due to its location on the Hawkesbury River. Sea level rise and storm surges can lead to inundation and erosion.

Primary Drivers

  • ·Sea level rise
  • ·Increased storm intensity

Projections (RCP8.5)

2030

5.8

2050

6.3

Data source

bushfire Risk

4.0/10

Brooklyn has a moderate bushfire risk due to its location near bushland areas. Dry conditions and strong winds can increase the likelihood of bushfires.

Primary Drivers

  • ·Dry vegetation
  • ·Increased temperatures
  • ·Wind patterns

Projections (RCP4.5)

2030

4.2

2050

4.5

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums are likely to increase due to the growing climate risks.

Price Impact

Properties in high-risk areas may experience a decrease in value.

Buyer Checklist

  • 1.Check flood maps and bushfire prone area designations.
  • 2.Assess the property's vulnerability to heatwaves.
  • 3.Inquire about past flood or bushfire events.
  • 4.Review insurance options and potential premium increases.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Hawkesbury River
Elevation Range
5-50 meters
Flood Zone
Yes

Historical flood data indicates that Brooklyn has experienced several significant flood events in the past.

View council flood map

Bushfire Evidence

Distance to Bushland
Adjacent
Planning Overlay
https://www.rfs.nsw.gov.au/plan-and-prepare/bush-fire-prone-land
Bushfire Prone Area
Yes

The area is designated as bushfire prone, requiring properties to adhere to specific building standards.

Heat Evidence

Avg January Max Temp
29.5°C
Heat Stress Days/Year
3 days

The number of days exceeding 35°C is projected to increase in the coming decades.

Coastal Evidence

Distance to Coast
0.1 km
Sea Level Rise Exposure
Low-lying areas are vulnerable to sea level rise.
Erosion Risk
Some areas are at risk of erosion due to increased wave action.

Historical Climate Events

1990
floodModerate

Major flooding of the Hawkesbury River impacted Brooklyn, causing property damage and disruption to transport.

Source
2002
bushfireModerate

Bushfires in the surrounding areas threatened Brooklyn, requiring residents to be on alert and prepared to evacuate.

Source
2013
floodModerate

Heavy rainfall caused flash flooding in Brooklyn, inundating roads and properties.

Source
2017
stormMinor

Severe storms with strong winds caused damage to trees and power lines in Brooklyn.

Source
2019
heatwaveModerate

Prolonged heatwave conditions put strain on infrastructure and increased health risks for vulnerable residents.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP4.5

HazardToday20302050
flood6.56.9(+0.4)7.4(+0.9)
bushfire4.04.2(+0.2)4.5(+0.5)
heat5.05.5(+0.5)6.0(+1.0)
coastal5.35.6(+0.3)6.0(+0.7)

By 2030, Brooklyn is projected to experience a moderate increase in overall climate risk, with notable increases in flood and heatwave risks. Adaptation measures will be crucial to mitigate these impacts.

CSIRO Climate Projections

Adaptation Recommendations

Upgrade Flood Defenses

Near-term

Invest in improved flood defenses, such as levees and drainage systems, to protect properties from inundation.

Est. cost: High

Learn more

Implement Bushfire Management Plans

Near-term

Develop and implement comprehensive bushfire management plans, including vegetation clearing and community education programs.

Est. cost: Medium

Learn more

Develop Heatwave Preparedness Plans

Immediate

Create heatwave preparedness plans to protect vulnerable populations, including cooling centers and public awareness campaigns.

Est. cost: Low

Learn more

Strengthen Coastal Protection

Long-term

Implement coastal protection measures, such as seawalls and beach nourishment, to mitigate the impacts of sea level rise and storm surges.

Est. cost: Very High

Learn more

Improve Emergency Response Systems

Near-term

Enhance emergency response systems to ensure effective coordination and communication during climate-related disasters.

Est. cost: Medium

Learn more

About Brooklyn's Climate Risk Profile

Brooklyn, located in New South Wales, is susceptible to a range of climate-related hazards. Its position near the Hawkesbury River makes it particularly vulnerable to flooding, with heavy rainfall events posing a significant threat to properties and infrastructure.

Bushfire risk is also a concern due to the surrounding bushland. Hot, dry conditions, coupled with strong winds, can create ideal conditions for bushfires to spread rapidly. Residents need to be prepared and aware of bushfire safety measures.

Rising temperatures and more frequent heatwaves are another growing concern. The urban environment can amplify the effects of heat, making it essential to take precautions during hot weather to protect vulnerable individuals.

Coastal risks, including sea level rise and storm surges, pose a threat to low-lying areas along the Hawkesbury River. These events can lead to inundation, erosion, and damage to coastal infrastructure.

Addressing these climate risks requires a combination of mitigation and adaptation strategies. Reducing greenhouse gas emissions is crucial to slowing down the rate of climate change, while local adaptation measures can help to protect communities from the impacts that are already occurring. These measures include improved flood defenses, bushfire management, heatwave preparedness plans, and coastal protection strategies.

By taking proactive steps to address climate change, Brooklyn can build resilience and protect its community from the growing risks.

Data sources: BOM · CSIRO · NSW State Emergency Service · NSW Rural Fire Service · NSW Department of Planning and Environment · Hornsby Shire Council

Local Government Resources

Frequently Asked Questions

What are the main climate risks facing Brooklyn?

Brooklyn faces risks from flooding, bushfires, heatwaves, and coastal inundation due to its location near the Hawkesbury River and bushland areas.

How is climate change expected to impact Brooklyn in the future?

Climate change is projected to increase the frequency and intensity of extreme weather events, such as floods, heatwaves, and bushfires, posing a greater threat to the community.

What is the council doing to address climate change in Brooklyn?

Hornsby Shire Council is developing and implementing climate adaptation strategies to protect the community from the impacts of climate change, including improved flood defenses and bushfire management plans.

What can residents do to prepare for climate-related disasters?

Residents can prepare by developing emergency plans, staying informed about weather warnings, and taking steps to protect their properties from flooding and bushfires.

Where can I find more information about climate risks in Brooklyn?

You can find more information on the Hornsby Shire Council website, the NSW State Emergency Service website, and the Bureau of Meteorology website.

Are insurance premiums likely to increase in Brooklyn due to climate change?

Yes, insurance premiums are likely to increase as the risk of climate-related disasters grows. It's important to review your insurance coverage and understand the potential costs.

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