Flood Risk in Penneshaw, SA: 2026 Assessment

Penneshaw, South Australia· UNKNOWN
Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.Updated 1 Apr 2026

Is Penneshaw Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Penneshaw, South Australia, covering flood, bushfire, sea level rise and more.

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What A$49 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$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections

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Flood Risk Score

Not assessed

Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.

Key Facts

Flood Risk
Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.
Trend
increasing
Suburb
Penneshaw, SA
Overall Risk
Medium
Postcode
5222

Flood Risk Analysis

Penneshaw, located in South Australia, has a location-specific 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.

Low-lying areas near the coast are most vulnerable to flooding.

Penneshaw faces a moderate risk of flooding, primarily from heavy rainfall events and potential coastal inundation. The risk is influenced by its coastal location and low-lying areas.

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.

ClimateNest assesses hazards at the address rather than the suburb, because exposure varies street by street within Penneshaw. An address-level check is what tells you about a specific property before you buy, sell or insure it.

Local Hazard Evidence

Nearest WaterwayEastern Cove
Elevation Range0-30 meters
Flood Zone ClassificationCoastal Inundation Zone

Historical Events

2007
Moderate

Heavy rainfall caused localized flooding in low-lying areas of Penneshaw.

Adaptation & Mitigation Actions

Coastal Protection Measures

Near-term

Implement coastal protection measures such as seawalls and dune restoration to mitigate the impacts of sea level rise and coastal erosion.

Est. cost: High

Bushfire Preparedness Planning

Immediate

Develop and implement comprehensive bushfire preparedness plans, including community education programs and fuel reduction strategies.

Est. cost: Medium

Heatwave Early Warning System

Near-term

Establish a heatwave early warning system to alert residents of impending heatwave events and provide guidance on how to stay safe.

Est. cost: Low

Water Conservation Strategies

Long-term

Implement water conservation strategies to address potential water shortages due to climate change.

Est. cost: Medium

Community Resilience Programs

Long-term

Develop community resilience programs to help residents cope with the impacts of climate change, such as extreme weather events and displacement.

Est. cost: Low

Council & Emergency Services

Kangaroo Island Council
Emergency Services

Data last updated: 1 April 2026

Explore Penneshaw Risk Reports

Frequently Asked Questions

Is Penneshaw at risk of flooding?

Based on available data, Penneshaw has a location-specific 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 Penneshaw?

Insurance costs for flood cover in Penneshaw 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 Penneshaw?

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

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

Is Penneshaw Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Penneshaw, South Australia, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$49 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$49 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections