Flood Risk in Wirrimah, NSW: 2026 Assessment

Wirrimah, New South Wales· Hilltops Council
Wirrimah faces a moderate risk of flooding due to its location and rainfall patterns. Local waterways can overflow during heavy rain events.Updated 30 May 2026

Flood Risk Score

6.0/10

Wirrimah faces a moderate risk of flooding due to its location and rainfall patterns. Local waterways can overflow during heavy rain events.

Key Facts

Flood Risk
Wirrimah faces a moderate risk of flooding due to its location and rainfall patterns. Local waterways can overflow during heavy rain events.
Trend
increasing
Suburb
Wirrimah, NSW
Overall Risk
Medium
Postcode
2803
Highest high-risk exposure
10% of land (bushfire)

Flood Risk Analysis

Wirrimah, 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.

Local knowledge suggests that some areas have experienced flooding in the past, particularly after prolonged periods of heavy rainfall.

Wirrimah faces a moderate risk of flooding due to its location and rainfall patterns. Local waterways can overflow during heavy rain events.

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.

Wirrimah sits within ClimateNest's suburb-level hazard model for flood risk. 9.8% of the suburb's land area is mapped in high-risk flood zones and 70% 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 Wirrimah.

Wirrimah (postcode 2803) 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 (10% of land in high-risk zones), surface flood (9.9% of land in high-risk zones), riverine flood (9.8% of land in high-risk zones). Exposure is not uniform across Wirrimah — 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 WaterwayHarden Murrumburrah Creek
Elevation Range280-320m
Flood Zone ClassificationAreas near the creek are susceptible to flooding.

Historical Events

2017
Moderate

Heavy rainfall led to flash flooding in low-lying areas, disrupting transportation and damaging property.

2010
Moderate

Significant flooding occurred in the region, impacting local infrastructure and agriculture.

Adaptation & Mitigation Actions

Improve Flood Defenses

Near-term

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

Est. cost: High

Develop a Heat Action Plan

Immediate

Implement a community-based heat action plan to protect vulnerable populations during heatwaves.

Est. cost: Low

Enhance Bushfire Preparedness

Near-term

Support community education programs on bushfire preparedness and property maintenance.

Est. cost: Medium

Promote Water Conservation

Long-term

Encourage water conservation measures to address potential water shortages during droughts.

Est. cost: Low

Upgrade Building Standards

Long-term

Implement building standards that improve energy efficiency and resilience to extreme weather events.

Est. cost: High

Council & Emergency Services

Hilltops Council
Emergency Services

Data last updated: 30 May 2026

Explore Wirrimah Risk Reports

Frequently Asked Questions

Is Wirrimah at risk of flooding?

Based on available data, Wirrimah has a notable 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 Wirrimah?

Insurance costs for flood cover in Wirrimah 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 Wirrimah?

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

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

ClimateNest's hazard overlay maps 10% of Wirrimah in high-risk zones for bushfire, with a further 78.5% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.

Is Wirrimah Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Wirrimah, 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 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections