📮 Kurnell postcode: 2231

Flood Risk in Kurnell, NSW: 2026 Assessment

Kurnell, New South Wales· Sutherland Shire· 2231
Kurnell faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and sea level rise are expected to exacerbate this risk.Updated 12 Mar 2026

Is Kurnell Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Kurnell, New South Wales, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$49 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections

Not ready to check your address? See a free sample report →

Flood Risk Score

Not assessed

Kurnell faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and sea level rise are expected to exacerbate this risk.

Key Facts

Flood Risk
Kurnell faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and sea level rise are expected to exacerbate this risk.
Trend
increasing
Suburb
Kurnell, NSW
Overall Risk
Medium
Postcode
2231

Flood Risk Analysis

Kurnell, located in New South Wales, has a location-specific flood risk profile based on available data including proximity to waterways, elevation, and historical flood events. The Bureau of Meteorology (BOM) maintains river height and flood warning data for catchments across New South Wales.

Several areas in Kurnell are prone to flash flooding during heavy rainfall events.

Kurnell faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and sea level rise are expected to exacerbate this risk.

For a comprehensive property-specific flood assessment including address-level elevation data, flood overlay mapping, and insurance cost estimates, use the ClimateNest full analysis tool. General suburb data cannot replace a site-specific evaluation.

ClimateNest assesses hazards at the address rather than the suburb, because exposure varies street by street within Kurnell. An address-level check is what tells you about a specific property before you buy, sell or insure it.

Local Hazard Evidence

Nearest WaterwayBotany Bay
Elevation Range0-20 meters
Flood Zone ClassificationCoastal floodplain

Historical Events

2022
Moderate

Heavy rainfall caused flash flooding in parts of Kurnell, leading to road closures and property damage.

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

Upgrade drainage systems to reduce the risk of flash flooding during heavy rainfall events.

Est. cost: Medium

Strengthen coastal defenses

Long-term

Construct seawalls and other coastal defenses to protect against sea level rise and storm surge.

Est. cost: High

Develop a heatwave response plan

Immediate

Implement a heatwave response plan to protect vulnerable populations during extreme heat events.

Est. cost: Low

Reduce bushfire risk

Near-term

Implement bushfire mitigation measures, such as clearing vegetation around properties and conducting controlled burns.

Est. cost: Medium

Raise awareness of climate risks

Immediate

Educate residents about the risks of climate change and how to prepare for them.

Est. cost: Low

Council & Emergency Services

Sutherland Shire Council
Emergency Services

Data last updated: 12 March 2026

Explore Kurnell Risk Reports

Frequently Asked Questions

Is Kurnell at risk of flooding?

Based on available data, Kurnell has a location-specific flood risk profile. Flood risk varies by address — check your specific property for precise flood zone mapping and elevation data with ClimateNest.

What flood insurance costs can I expect in Kurnell?

Insurance costs for flood cover in Kurnell depend on the property's flood zone classification, elevation, and proximity to waterways. ClimateNest provides address-level insurance cost estimates based on your property's specific hazard exposure.

Does flood risk affect property values in Kurnell?

Yes, flood risk can affect property values in Kurnell. Properties in mapped flood zones may experience lower buyer demand, reduced valuations, and higher insurance costs. Lenders increasingly assess flood exposure as part of mortgage risk evaluation.

How does elevation affect flood risk in Kurnell?

Elevation is a critical factor in flood risk. Properties at higher elevations within Kurnell typically have lower flood exposure than those near waterways or in low-lying areas. Address-level elevation data combined with BOM flood mapping provides the most accurate picture.

Is Kurnell Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Kurnell, New South Wales, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$49 could save you from

$7.2B
2022 insured disaster losses*
$300B+
climate risk to property by 2050*
30-120%
insurance premium increases in high-risk areas*

*Industry sources: ICA, APRA, RBA

Full report from A$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections