📮 Illawong postcode: 2234

Flood Risk in Illawong, NSW: 2026 Assessment

Illawong, New South Wales· Sutherland Shire· 2234
Illawong faces a moderate risk of flooding due to its proximity to the Georges River and local creeks. Intense rainfall events can lead to riverine and flash flooding.Updated 26 May 2026

Is Illawong Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Illawong, 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

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Flood Risk Score

Not assessed

Illawong faces a moderate risk of flooding due to its proximity to the Georges River and local creeks. Intense rainfall events can lead to riverine and flash flooding.

Key Facts

Flood Risk
Illawong faces a moderate risk of flooding due to its proximity to the Georges River and local creeks. Intense rainfall events can lead to riverine and flash flooding.
Trend
increasing
Suburb
Illawong, NSW
Overall Risk
Medium
Postcode
2234

Flood Risk Analysis

Illawong, 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.

Historical flood events have impacted properties along the Georges River. Council provides flood maps and advice for residents.

Illawong faces a moderate risk of flooding due to its proximity to the Georges River and local creeks. Intense rainfall events can lead to riverine and flash flooding.

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 Illawong. An address-level check is what tells you about a specific property before you buy, sell or insure it.

Local Hazard Evidence

Nearest WaterwayGeorges River
Elevation Range5-40 meters
Flood Zone ClassificationAreas near the Georges River are designated as flood zones.

Historical Events

2022
Moderate

Heavy rainfall caused flooding in low-lying areas along the Georges River.

Adaptation & Mitigation Actions

Improve Flood Defenses

Near-term

Invest in infrastructure to mitigate flood risk, such as improved drainage systems and flood barriers.

Est. cost: High

Bushfire Preparedness

Immediate

Implement bushfire management strategies, including vegetation clearing and community education programs.

Est. cost: Medium

Heatwave Action Plan

Near-term

Develop a heatwave action plan to protect vulnerable populations during extreme heat events.

Est. cost: Low

Sustainable Urban Planning

Long-term

Promote sustainable urban planning practices to reduce the urban heat island effect and improve water management.

Est. cost: Medium

Council & Emergency Services

Sutherland Shire Council
Emergency Services

Data last updated: 26 May 2026

Explore Illawong Risk Reports

Frequently Asked Questions

Is Illawong at risk of flooding?

Based on available data, Illawong 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 Illawong?

Insurance costs for flood cover in Illawong 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 Illawong?

Yes, flood risk can affect property values in Illawong. 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 Illawong?

Elevation is a critical factor in flood risk. Properties at higher elevations within Illawong 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 Illawong Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Illawong, 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