📮 Algester postcode: 4115

Flood Risk in Algester, QLD: 2026 Assessment

Algester, Queensland· Brisbane City· 4115
Algester has a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, potentially worsening flood events.Updated 21 Mar 2026

Flood Risk Score

6.0/10

Algester has a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, potentially worsening flood events.

Key Facts

Flood Risk
Algester has a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, potentially worsening flood events.
Trend
increasing
Suburb
Algester, QLD
Overall Risk
Medium
Postcode
4115
Region
Greater Brisbane
Median property value
$950,000
Dominant hazard
extreme heat (6/10)
Highest high-risk exposure
14.6% of land (riverine flood)

Flood Risk Analysis

Algester, located in Queensland, 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 Queensland.

Some properties in Algester are located in areas prone to flash flooding.

Algester has a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, potentially worsening flood 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.

Algester sits within ClimateNest's suburb-level hazard model for flood risk. 14.6% of the suburb's land area is mapped in high-risk flood zones and 76.3% 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 Algester.

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

Algester located in Greater Brisbane (postcode 4115), is a Queensland suburb tracked by ClimateNest. The suburb's median property value is $950,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Algester.

Across the six hazard axes ClimateNest models, the dominant climate risk in Algester is extreme heat (score 6/10), with moderate exposure. Insurance signals for the suburb point to premiums rising moderately (+35% 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 Algester, 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 Algester are increasingly made with an address-level climate report in hand.

Local Hazard Evidence

Nearest WaterwayBrisbane River
Elevation Range20-40m
Flood Zone ClassificationSome areas are within the flood zone

Historical Events

2022
Major

Major flooding event impacted Brisbane and surrounding suburbs, including Algester, causing significant damage.

2011
Major

The 2011 Brisbane floods affected some parts of Algester, causing property damage and disruption.

Adaptation & Mitigation Actions

Improve Flood Resilience

Near-term

Implement measures to reduce flood risk, such as improving drainage infrastructure and raising building foundations.

Est. cost: Medium

Enhance Heatwave Preparedness

Immediate

Develop a heatwave management plan and provide cooling centers for vulnerable residents.

Est. cost: Low

Promote Water Conservation

Long-term

Encourage water conservation practices to reduce water stress during droughts.

Est. cost: Low

Support Community Awareness

Near-term

Raise community awareness about climate change risks and adaptation measures.

Est. cost: Low

Council & Emergency Services

Brisbane City Council
Emergency Services

Data last updated: 21 March 2026

Explore Algester Risk Reports

Frequently Asked Questions

Is Algester at risk of flooding?

Based on available data, Algester 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 Algester?

Insurance costs for flood cover in Algester 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 Algester?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Algester 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 are the main climate risks in Algester?

ClimateNest's suburb model rates Algester's dominant climate risk as extreme heat at 6/10 on a 0–10 index, followed by severe storm (6/10) and flood (5/10). These are suburb-level averages — an address-level report is needed to confirm the risk of a specific property in Algester.

What share of Algester is exposed to high riverine flood risk?

ClimateNest's hazard overlay maps 14.6% of Algester in high-risk zones for riverine flood, with a further 76.3% 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 Algester Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Algester, Queensland, 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