Flood Risk in Mamarlawoa, SA: 2026 Assessment

Mamarlawoa, South Australia· UNKNOWN
Flooding is a moderate concern in Mamarlawoa, with potential for riverine and flash flooding during heavy rainfall events.Updated 21 Mar 2026

Flood Risk Score

6.0/10

Flooding is a moderate concern in Mamarlawoa, with potential for riverine and flash flooding during heavy rainfall events.

Key Facts

Flood Risk
Flooding is a moderate concern in Mamarlawoa, with potential for riverine and flash flooding during heavy rainfall events.
Trend
increasing
Suburb
Mamarlawoa, SA
Overall Risk
Medium
Postcode
5724
Highest high-risk exposure
12.4% of land (bushfire)

Flood Risk Analysis

Mamarlawoa, located in South 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 South Australia.

Local knowledge of flood history is important.

Flooding is a moderate concern in Mamarlawoa, with potential for riverine and flash flooding during heavy rainfall 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.

Mamarlawoa sits within ClimateNest's suburb-level hazard model for flood risk. 4.7% of the suburb's land area is mapped in high-risk flood zones and 85.7% 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 Mamarlawoa.

Mamarlawoa (postcode 5724) 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 (12.4% of land in high-risk zones), surface flood (8.7% of land in high-risk zones), extreme wind (5% of land in high-risk zones). Exposure is not uniform across Mamarlawoa — 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 WaterwayLocal creeks and rivers
Elevation RangeLow-lying areas
Flood Zone ClassificationAreas near waterways

Historical Events

2012
Moderate

Heavy rainfall caused localized flooding in Mamarlawoa.

Adaptation & Mitigation Actions

Improve building design for heat resilience

Near-term

Incorporate passive cooling techniques and energy-efficient air conditioning.

Est. cost: Medium

Enhance flood preparedness

Near-term

Develop community flood plans and improve drainage infrastructure.

Est. cost: Medium

Implement early warning systems for heatwaves

Immediate

Provide timely alerts and support for vulnerable populations.

Est. cost: Low

Protect and restore coastal ecosystems

Long-term

Conserve mangroves and other natural barriers to reduce coastal erosion.

Est. cost: High

Council & Emergency Services

UNKNOWN
Emergency Services

Data last updated: 21 March 2026

Explore Mamarlawoa Risk Reports

Frequently Asked Questions

Is Mamarlawoa at risk of flooding?

Based on available data, Mamarlawoa 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 Mamarlawoa?

Insurance costs for flood cover in Mamarlawoa 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 Mamarlawoa?

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

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

ClimateNest's hazard overlay maps 12.4% of Mamarlawoa in high-risk zones for bushfire, with a further 62.3% 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 Mamarlawoa Safe from Climate Risk?

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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