๐Ÿ“ฎ Glenelg postcode: 5045

Flood Risk in Glenelg, SA: 2026 Assessment

Glenelg, South Australiaยท City of Holdfast Bayยท 5045
Glenelg faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and rising sea levels could exacerbate flood events.Updated 22 Mar 2026

Flood Risk Score

6.5/10

Glenelg faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and rising sea levels could exacerbate flood events.

Key Facts

Flood Risk
Glenelg faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and rising sea levels could exacerbate flood events.
Trend
increasing
Suburb
Glenelg, SA
Overall Risk
Medium
Postcode
5045
Highest high-risk exposure
12% of land (bushfire)

Flood Risk Analysis

Glenelg, 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.

The Patawalonga River is prone to flooding during heavy rainfall events, impacting nearby properties.

Glenelg faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and rising sea levels could exacerbate 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.

Glenelg sits within ClimateNest's suburb-level hazard model for flood risk. 3.2% of the suburb's land area is mapped in high-risk flood zones and 90.1% 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 Glenelg.

Glenelg (postcode 5045) 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% of land in high-risk zones), surface flood (5.7% of land in high-risk zones), coastal inundation (5.4% of land in high-risk zones). Exposure is not uniform across Glenelg โ€” 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 WaterwayPatawalonga River
Elevation Range0-10 meters
Flood Zone ClassificationCoastal Flood Zone

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

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

Est. cost: Medium

Implement coastal protection measures

Immediate

Construct seawalls and other coastal defenses to protect against erosion and sea level rise.

Est. cost: High

Promote energy efficiency and reduce urban heat island effect

Long-term

Encourage the use of cool roofs, green spaces, and energy-efficient buildings to mitigate the urban heat island effect.

Est. cost: Medium

Develop community emergency plans

Near-term

Create community-based emergency plans to prepare for and respond to extreme weather events.

Est. cost: Low

Council & Emergency Services

City of Holdfast Bay
Emergency Services

Data last updated: 22 March 2026

Explore Glenelg Risk Reports

Frequently Asked Questions

Is Glenelg at risk of flooding?

Based on available data, Glenelg has a notable flood risk profile. Flood risk varies by address โ€” check your specific property for precise flood zone mapping and elevation data with ClimateNest.

What flood insurance costs can I expect in Glenelg?

Insurance costs for flood cover in Glenelg 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 Glenelg?

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

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

ClimateNest's hazard overlay maps 12% of Glenelg in high-risk zones for bushfire, with a further 64.6% in moderate-risk zones. Suburb-level exposure is not uniform โ€” individual properties can differ from these averages, so an address-level check is recommended.

Is Glenelg Safe from Climate Risk?

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