๐Ÿ“ฎ Hamilton Hill postcode: 6163

Flood Risk in Hamilton Hill, WA: 2026 Assessment

Hamilton Hill, Western Australiaยท City of Cockburnยท 6163
Hamilton Hill faces a moderate risk of flooding, primarily from intense rainfall events and potential stormwater runoff. The area's relatively flat topography can exacerbate flooding in low-lying areas.Updated 22 Mar 2026

Flood Risk Score

4.0/10

Hamilton Hill faces a moderate risk of flooding, primarily from intense rainfall events and potential stormwater runoff. The area's relatively flat topography can exacerbate flooding in low-lying areas.

Key Facts

Flood Risk
Hamilton Hill faces a moderate risk of flooding, primarily from intense rainfall events and potential stormwater runoff. The area's relatively flat topography can exacerbate flooding in low-lying areas.
Trend
increasing
Suburb
Hamilton Hill, WA
Overall Risk
Medium
Postcode
6163
Highest high-risk exposure
12.3% of land (surface flood)

Flood Risk Analysis

Hamilton Hill, 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.

The City of Cockburn has implemented stormwater management strategies to mitigate flood risks.

Hamilton Hill faces a moderate risk of flooding, primarily from intense rainfall events and potential stormwater runoff. The area's relatively flat topography can exacerbate flooding in 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.

Hamilton Hill sits within ClimateNest's suburb-level hazard model for flood risk. 7% of the suburb's land area is mapped in high-risk flood zones and 65.1% 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 Hamilton Hill.

Hamilton Hill (postcode 6163) 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 (12.3% of land in high-risk zones), tropical cyclone (10.4% of land in high-risk zones), bushfire (9.2% of land in high-risk zones). Exposure is not uniform across Hamilton Hill 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 WaterwayIndian Ocean
Elevation Range5-40 meters
Flood Zone ClassificationAreas near the coast and low-lying areas are susceptible to flooding.

Historical Events

2011
Minor

Heavy rainfall led to localized flooding in low-lying areas of Hamilton Hill.

Adaptation & Mitigation Actions

Coastal Protection Measures

Near-term

Implement coastal protection measures such as seawalls and beach nourishment to reduce the impact of sea level rise and coastal erosion.

Est. cost: High

Bushfire Preparedness

Immediate

Develop and implement a comprehensive bushfire management plan, including community education programs and fuel reduction activities.

Est. cost: Medium

Heatwave Management

Near-term

Establish a heatwave early warning system and implement measures to protect vulnerable populations during extreme heat events.

Est. cost: Low

Flood Mitigation

Long-term

Upgrade stormwater drainage systems and implement flood-proofing measures for properties in flood-prone areas.

Est. cost: Medium

Council & Emergency Services

City of Cockburn
Emergency Services

Data last updated: 22 March 2026

Explore Hamilton Hill Risk Reports

Frequently Asked Questions

Is Hamilton Hill at risk of flooding?

Based on available data, Hamilton Hill 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 Hamilton Hill?

Insurance costs for flood cover in Hamilton Hill 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 Hamilton Hill?

Yes, flood risk can affect property values in Hamilton Hill. 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 Hamilton Hill?

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

ClimateNest's hazard overlay maps 12.3% of Hamilton Hill in high-risk zones for surface flood, with a further 65.8% 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 Hamilton Hill Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Hamilton Hill, 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