📮 Deagon postcode: 4017

Flood Risk in Deagon, QLD: 2026 Assessment

Deagon, Queensland· Brisbane City· 4017
Deagon faces a moderate risk of flooding due to its low-lying areas and proximity to waterways. Climate change is expected to increase rainfall intensity, exacerbating flood risk.Updated 9 Mar 2026

Flood Risk Score

6.5/10

Deagon faces a moderate risk of flooding due to its low-lying areas and proximity to waterways. Climate change is expected to increase rainfall intensity, exacerbating flood risk.

Key Facts

Flood Risk
Deagon faces a moderate risk of flooding due to its low-lying areas and proximity to waterways. Climate change is expected to increase rainfall intensity, exacerbating flood risk.
Trend
increasing
Suburb
Deagon, QLD
Overall Risk
Medium
Postcode
4017
Region
Greater Brisbane
Median property value
$950,000
Dominant hazard
extreme heat (6/10)
Highest high-risk exposure
13.3% of land (bushfire)

Flood Risk Analysis

Deagon, 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.

Deagon is located near several creeks and waterways that contribute to the flood risk. Historical flood events have impacted properties in the area.

Deagon faces a moderate risk of flooding due to its low-lying areas and proximity to waterways. Climate change is expected to increase rainfall intensity, exacerbating flood risk.

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.

Deagon sits within ClimateNest's suburb-level hazard model for flood risk. 11.3% of the suburb's land area is mapped in high-risk flood zones and 63.1% 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 Deagon.

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

Deagon located in Greater Brisbane (postcode 4017), 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 Deagon.

Across the six hazard axes ClimateNest models, the dominant climate risk in Deagon 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 Deagon, 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 Deagon are increasingly made with an address-level climate report in hand.

Local Hazard Evidence

Nearest WaterwayMoreton Bay
Elevation Range0-10 meters
Flood Zone ClassificationMedium

Historical Events

2022
Moderate

Major flooding event impacted Deagon, causing property damage and road closures.

2011
Moderate

The 2011 Brisbane floods caused significant inundation in low-lying areas of Deagon.

Adaptation & Mitigation Actions

Improve Drainage Infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall intensity and reduce the risk of flooding.

Est. cost: High

Implement Heatwave Early Warning System

Immediate

Develop and implement a heatwave early warning system to alert residents of impending heatwaves and provide guidance on how to stay safe.

Est. cost: Medium

Protect Coastal Areas

Long-term

Implement coastal protection measures, such as seawalls and beach nourishment, to mitigate the impacts of sea level rise and storm surges.

Est. cost: Very High

Community Education Programs

Near-term

Educate residents about climate change risks and adaptation measures through community workshops and outreach programs.

Est. cost: Low

Council & Emergency Services

Brisbane City Council
Emergency Services

Data last updated: 9 March 2026

Explore Deagon Risk Reports

Frequently Asked Questions

Is Deagon at risk of flooding?

Based on available data, Deagon 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 Deagon?

Insurance costs for flood cover in Deagon 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 Deagon?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Deagon 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 Deagon?

ClimateNest's suburb model rates Deagon'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 Deagon.

What share of Deagon is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 13.3% of Deagon in high-risk zones for bushfire, with a further 65.4% 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 Deagon Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Deagon, 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