๐Ÿ“ฎ Roebourne postcode: 6718

Flood Risk in Roebourne, WA: 2026 Assessment

Roebourne, Western Australiaยท City of Karrathaยท 6718
Roebourne faces a moderate risk of flooding due to its proximity to the Harding River and low-lying areas. Intense rainfall events can lead to riverine and flash flooding.Updated 18 Mar 2026

Flood Risk Score

6.5/10

Roebourne faces a moderate risk of flooding due to its proximity to the Harding River and low-lying areas. Intense rainfall events can lead to riverine and flash flooding.

Key Facts

Flood Risk
Roebourne faces a moderate risk of flooding due to its proximity to the Harding River and low-lying areas. Intense rainfall events can lead to riverine and flash flooding.
Trend
increasing
Suburb
Roebourne, WA
Overall Risk
High
Postcode
6718
Highest high-risk exposure
9.2% of land (surface flood)

Flood Risk Analysis

Roebourne, located in Western Australia, 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 Western Australia.

Historical flood events have impacted Roebourne, particularly during periods of heavy rainfall associated with tropical cyclones.

Roebourne faces a moderate risk of flooding due to its proximity to the Harding River and low-lying areas. 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.

Roebourne sits within ClimateNest's suburb-level hazard model for flood risk. 6.8% 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 Roebourne.

Roebourne (postcode 6718) 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 surface flood (9.2% of land in high-risk zones), bushfire (7.6% of land in high-risk zones), riverine flood (6.8% of land in high-risk zones). Exposure is not uniform across Roebourne 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 WaterwayHarding River
Elevation Range5-20m
Flood Zone ClassificationAreas near the Harding River are prone to flooding.

Historical Events

2023
Minor

Localized flooding occurred in Roebourne following heavy rainfall, causing minor disruptions.

2015
Moderate

Heavy rainfall associated with a tropical low caused flooding in Roebourne, impacting homes and businesses.

Adaptation & Mitigation Actions

Improve Flood Defenses

Near-term

Construct levees and drainage systems to protect low-lying areas from flooding.

Est. cost: High

Enhance Bushfire Preparedness

Immediate

Implement vegetation management programs, create firebreaks, and improve community education on bushfire safety.

Est. cost: Medium

Develop a Heat Action Plan

Immediate

Establish cooling centers, provide public health advice on heat safety, and ensure access to water during heatwaves.

Est. cost: Low

Plan for Sea Level Rise

Long-term

Assess the vulnerability of coastal infrastructure to sea level rise and develop adaptation strategies, such as managed retreat or coastal protection measures.

Est. cost: Very High

Upgrade Infrastructure Resilience

Near-term

Ensure that critical infrastructure, such as power and water supplies, is resilient to extreme weather events.

Est. cost: High

Council & Emergency Services

City of Karratha
Emergency Services

Data last updated: 18 March 2026

Explore Roebourne Risk Reports

Frequently Asked Questions

Is Roebourne at risk of flooding?

Based on available data, Roebourne 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 Roebourne?

Insurance costs for flood cover in Roebourne 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 Roebourne?

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

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

ClimateNest's hazard overlay maps 9.2% of Roebourne in high-risk zones for surface flood, with a further 79.2% 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 Roebourne Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Roebourne, Western Australia, 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