Flood Risk in Mandurah, WA: 2026 Assessment

Mandurah, 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.

Several areas in Mandurah are prone to flash flooding during heavy rainfall events. The City of Mandurah maintains flood maps and provides information to residents on how to prepare for floods.

Mandurah faces a moderate risk of flooding due to its low-lying coastal location and proximity to the Peel-Harvey Estuary. Intense rainfall events can lead to stormwater runoff exceeding drainage capacity, causing inundation of low-lying areas.

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.

Mandurah sits within ClimateNest's suburb-level hazard model for flood risk. 2.5% of the suburb's land area is mapped in high-risk flood zones and 73.5% 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 Mandurah.

On ClimateNest's 0–10 suburb hazard index, Mandurah scores 5 for flood risk — a moderate exposure relative to the Australian suburb range. For comparison, properties in Mandurah can still sit well above or below this suburb average depending on elevation, distance to waterways or vegetation, and local drainage.

Mandurah located in Peel Region (postcode 6210), is a Western Australia suburb tracked by ClimateNest. The suburb's median property value is $650,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Mandurah.

Across the six hazard axes ClimateNest models, the dominant climate risk in Mandurah is extreme heat (score 6/10), with moderate exposure. Insurance signals for the suburb point to premiums rising moderately (+25% by 2030). These suburb-level signals help prioritise which properties need the closest look — the actual risk of any single home can only be confirmed with an address-level report.

Whether you are buying, selling or renovating in Mandurah, extreme heat is the hazard to weigh first. Local council planning controls, state hazard mapping and lender climate policies each reference this kind of suburb-level signal, and property decisions in Mandurah are increasingly made with an address-level climate report in hand.