๐Ÿ“ฎ Wongawilli postcode: 2530

Flood Risk in Wongawilli, NSW: 2026 Assessment

Wongawilli, New South Walesยท Wollongongยท 2530
Wongawilli faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.Updated 30 May 2026

Flood Risk Score

6.5/10

Wongawilli faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.

Key Facts

Flood Risk
Wongawilli faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.
Trend
increasing
Suburb
Wongawilli, NSW
Overall Risk
Medium
Postcode
2530
Highest high-risk exposure
14.7% of land (bushfire)

Flood Risk Analysis

Wongawilli, located in New South Wales, has a notable 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.

Some properties near Wongawilli Creek are susceptible to flooding during heavy rainfall events.

Wongawilli faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood 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.

Wongawilli sits within ClimateNest's suburb-level hazard model for flood risk. 9.3% of the suburb's land area is mapped in high-risk flood zones and 84.2% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Wongawilli.

Wongawilli (postcode 2530) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are bushfire (14.7% of land in high-risk zones), surface flood (10.3% of land in high-risk zones), riverine flood (9.3% of land in high-risk zones). Exposure is not uniform across Wongawilli โ€” individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.

Local Hazard Evidence

Nearest WaterwayWongawilli Creek
Elevation Range100-150m
Flood Zone ClassificationMedium

Historical Events

2011
Moderate

Heavy rainfall caused flooding in low-lying areas of Wongawilli, affecting several homes and businesses.

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

Upgrade drainage systems to better manage increased rainfall and reduce flood risk.

Est. cost: Medium

Implement bushfire mitigation measures

Immediate

Clear vegetation around properties and develop bushfire survival plans.

Est. cost: Low

Establish community cooling centers

Near-term

Provide safe and accessible cooling centers for vulnerable populations during heatwaves.

Est. cost: Medium

Raise awareness about climate risks

Long-term

Educate residents about the impacts of climate change and how to prepare for extreme weather events.

Est. cost: Low

Promote water conservation

Long-term

Encourage residents to conserve water to reduce strain on water resources during droughts.

Est. cost: Low

Council & Emergency Services

Wollongong City Council
Emergency Services

Data last updated: 30 May 2026

Explore Wongawilli Risk Reports

Frequently Asked Questions

Is Wongawilli at risk of flooding?

Based on available data, Wongawilli has a notable flood risk profile. Flood risk varies by address โ€” check your specific property for precise flood zone mapping and elevation data with ClimateNest.

What flood insurance costs can I expect in Wongawilli?

Insurance costs for flood cover in Wongawilli 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 Wongawilli?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Wongawilli 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.

What share of Wongawilli is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 14.7% of Wongawilli in high-risk zones for bushfire, with a further 73.6% in moderate-risk zones. Suburb-level exposure is not uniform โ€” individual properties can differ from these averages, so an address-level check is recommended.

Is Wongawilli Safe from Climate Risk?

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

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What A$69 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$69 ยท Australian addresses only ยท 8 hazard scores ยท Insurance trajectory ยท 2030 & 2050 projections