Flood Risk in Macleay Island, QLD: 2026 Assessment

Macleay Island, Queensland· UNKNOWN
Macleay Island faces a moderate risk of flooding, primarily from heavy rainfall and storm surges. Low-lying areas are particularly vulnerable.Updated 8 Mar 2026

Flood Risk Score

6.5/10

Macleay Island faces a moderate risk of flooding, primarily from heavy rainfall and storm surges. Low-lying areas are particularly vulnerable.

Key Facts

Flood Risk
Macleay Island faces a moderate risk of flooding, primarily from heavy rainfall and storm surges. Low-lying areas are particularly vulnerable.
Trend
increasing
Suburb
Macleay Island, QLD
Overall Risk
Medium
Postcode
4184
Highest high-risk exposure
16.4% of land (riverine flood)

Flood Risk Analysis

Macleay Island, 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.

Low-lying areas around the coast are most vulnerable.

Macleay Island faces a moderate risk of flooding, primarily from heavy rainfall and storm surges. Low-lying areas are particularly vulnerable.

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.

Macleay Island sits within ClimateNest's suburb-level hazard model for flood risk. 16.4% of the suburb's land area is mapped in high-risk flood zones and 55.3% 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 Macleay Island.

Macleay Island (postcode 4184) 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 riverine flood (16.4% of land in high-risk zones), tropical cyclone (14.9% of land in high-risk zones), extreme wind (11.8% of land in high-risk zones). Exposure is not uniform across Macleay Island — 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 WaterwayMoreton Bay
Elevation Range0-20m
Flood Zone ClassificationCoastal Inundation Area

Historical Events

2022
Moderate

Heavy rainfall and king tides caused flooding in low-lying coastal areas of Macleay Island.

2013
Moderate

Heavy rainfall caused localized flooding on Macleay Island.

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

Upgrade drainage systems to reduce the risk of flooding from heavy rainfall.

Est. cost: Medium

Protect coastal ecosystems

Near-term

Preserve and restore mangroves and other coastal vegetation to provide natural protection against erosion and storm surges.

Est. cost: Low

Develop a heatwave management plan

Immediate

Implement strategies to protect vulnerable residents during heatwaves, such as establishing cooling centers and providing public health information.

Est. cost: Low

Raise awareness of climate risks

Long-term

Educate the community about the impacts of climate change and encourage proactive adaptation measures.

Est. cost: Low

Strengthen building codes

Long-term

Update building codes to ensure that new construction is resilient to climate change impacts, such as flooding and heatwaves.

Est. cost: Medium

Council & Emergency Services

Redland City Council
Emergency Services

Data last updated: 8 March 2026

Explore Macleay Island Risk Reports

Frequently Asked Questions

Is Macleay Island at risk of flooding?

Based on available data, Macleay Island 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 Macleay Island?

Insurance costs for flood cover in Macleay Island 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 Macleay Island?

Yes, flood risk can affect property values in Macleay Island. 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 Macleay Island?

Elevation is a critical factor in flood risk. Properties at higher elevations within Macleay Island 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 Macleay Island is exposed to high riverine flood risk?

ClimateNest's hazard overlay maps 16.4% of Macleay Island in high-risk zones for riverine flood, with a further 55.3% 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 Macleay Island Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Macleay Island, 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