Flood Risk in Forrestfield, WA: 2026 Assessment

Forrestfield, Western Australia· UNKNOWN
Forrestfield faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is expected to increase due to climate change.Updated 14 Mar 2026

Flood Risk Score

4.5/10

Forrestfield faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is expected to increase due to climate change.

Key Facts

Flood Risk
Forrestfield faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is expected to increase due to climate change.
Trend
increasing
Suburb
Forrestfield, WA
Overall Risk
Medium
Postcode
6058
Highest high-risk exposure
15.1% of land (bushfire)

Flood Risk Analysis

Forrestfield, 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.

Localized flooding can occur during periods of intense rainfall.

Forrestfield faces a moderate risk of flooding, primarily from heavy rainfall events and local creek overflows. The risk is expected to increase due to 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.

Forrestfield sits within ClimateNest's suburb-level hazard model for flood risk. 5.3% of the suburb's land area is mapped in high-risk flood zones and 67.3% 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 Forrestfield.

Forrestfield (postcode 6058) 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 (15.1% of land in high-risk zones), surface flood (8.2% of land in high-risk zones), tropical cyclone (7.6% of land in high-risk zones). Exposure is not uniform across Forrestfield — 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 WaterwayHelena River
Elevation Range40-80 meters
Flood Zone ClassificationLow-lying areas near Helena River

Historical Events

2022
Minor

Heavy downpours led to flash flooding in some parts of Forrestfield, causing minor property damage.

2010
Moderate

Heavy rainfall caused localized flooding in Forrestfield, affecting several homes and businesses.

Adaptation & Mitigation Actions

Bushfire Preparedness

Immediate

Prepare your home and property for bushfires by clearing vegetation, creating a firebreak, and having a bushfire survival plan.

Est. cost: Low

Flood Mitigation

Near-term

Improve stormwater drainage around your property and consider installing flood barriers if you live in a flood-prone area.

Est. cost: Medium

Heatwave Preparedness

Immediate

Install air conditioning or fans, stay hydrated, and avoid strenuous activity during heatwaves. Check on vulnerable neighbors and family members.

Est. cost: Low

Water Conservation

Long-term

Implement water-saving measures in your home and garden to reduce water consumption and prepare for potential droughts.

Est. cost: Low

Council & Emergency Services

City of Kalamunda
Emergency Services

Data last updated: 14 March 2026

Explore Forrestfield Risk Reports

Frequently Asked Questions

Is Forrestfield at risk of flooding?

Based on available data, Forrestfield 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 Forrestfield?

Insurance costs for flood cover in Forrestfield 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 Forrestfield?

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

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

ClimateNest's hazard overlay maps 15.1% of Forrestfield in high-risk zones for bushfire, with a further 70.3% 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 Forrestfield Safe from Climate Risk?

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