๐Ÿ“ฎ Mount Warrigal postcode: 2526

Flood Risk in Mount Warrigal, NSW: 2026 Assessment

Mount Warrigal, New South Walesยท Shellharbourยท 2526
Mount Warrigal faces a moderate risk of flooding, primarily from heavy rainfall events and proximity to local waterways. The risk is expected to increase with climate change.Updated 25 May 2026

Flood Risk Score

6.5/10

Mount Warrigal faces a moderate risk of flooding, primarily from heavy rainfall events and proximity to local waterways. The risk is expected to increase with climate change.

Key Facts

Flood Risk
Mount Warrigal faces a moderate risk of flooding, primarily from heavy rainfall events and proximity to local waterways. The risk is expected to increase with climate change.
Trend
increasing
Suburb
Mount Warrigal, NSW
Overall Risk
Medium
Postcode
2528
Highest high-risk exposure
8.8% of land (bushfire)

Flood Risk Analysis

Mount Warrigal, 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.

Historical flood data indicates that properties near the lake and low-lying areas are most vulnerable.

Mount Warrigal faces a moderate risk of flooding, primarily from heavy rainfall events and proximity to local waterways. The risk is expected to increase with climate change.

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.

Mount Warrigal sits within ClimateNest's suburb-level hazard model for flood risk. 8.6% of the suburb's land area is mapped in high-risk flood zones and 78.9% 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 Mount Warrigal.

Mount Warrigal (postcode 2528) 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 (8.8% of land in high-risk zones), riverine flood (8.6% of land in high-risk zones), surface flood (4.7% of land in high-risk zones). Exposure is not uniform across Mount Warrigal 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 WaterwayLake Illawarra
Elevation Range5-30 meters
Flood Zone ClassificationAreas near Lake Illawarra and creeks are prone to flooding.

Historical Events

2011
Moderate

Heavy rainfall caused localized flooding in low-lying areas of Shellharbour, including Mount Warrigal.

Adaptation & Mitigation Actions

Improve Drainage Infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall intensity and reduce flood risk.

Est. cost: Medium

Implement Bushfire Mitigation Strategies

Immediate

Create firebreaks, clear vegetation around properties, and develop community bushfire preparedness plans.

Est. cost: Low

Develop Heatwave Preparedness Plan

Near-term

Establish cooling centers, provide public education on heatwave safety, and support vulnerable populations.

Est. cost: Low

Strengthen Coastal Defenses

Long-term

Implement coastal protection measures to mitigate the impacts of sea level rise and storm surges.

Est. cost: High

Promote Water Conservation

Near-term

Encourage water-saving practices to reduce strain on water resources during droughts and heatwaves.

Est. cost: Low

Council & Emergency Services

Shellharbour City Council
Emergency Services

Data last updated: 25 May 2026

Explore Mount Warrigal Risk Reports

Frequently Asked Questions

Is Mount Warrigal at risk of flooding?

Based on available data, Mount Warrigal 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 Mount Warrigal?

Insurance costs for flood cover in Mount Warrigal 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 Mount Warrigal?

Yes, flood risk can affect property values in Mount Warrigal. 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 Mount Warrigal?

Elevation is a critical factor in flood risk. Properties at higher elevations within Mount Warrigal 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 Mount Warrigal is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 8.8% of Mount Warrigal in high-risk zones for bushfire, with a further 64.4% 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 Mount Warrigal Safe from Climate Risk?

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

Free instant previewCSIRO-powered data

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