Climate Risk Profile for Semaphore Park, SA

Semaphore Park, South Australia

Medium Risk

Updated Apr 2026

Semaphore Park faces moderate climate risks, primarily from flooding, heatwaves, and coastal hazards. Sea level rise and increased rainfall intensity are key drivers of these risks, potentially impacting property values and community well-being. Residents should prepare for more frequent extreme weather events and consider adaptation measures.

Overall Risk Score

52/100

Medium

Confidence: Medium

Hazard Breakdown

Flood

6.5

Bushfire

2.1

Heat

6.0

Coastal

6.2

Climate Hazard Breakdown for Semaphore Park

increasing

Flood

65/100

Semaphore Park is at moderate risk of flooding due to its low elevation and proximity to the coast and waterways. Heavy rainfall events can lead to stormwater flooding, and sea level rise increases the risk of coastal inundation.

Key drivers:

·Sea level rise
·Increased rainfall intensity

stable

Bushfire

21/100

The risk of bushfire in Semaphore Park is relatively low due to the suburb's coastal location and limited vegetation. However, dry conditions and strong winds can increase the risk during the bushfire season.

Key drivers:

·Dry vegetation
·Strong winds

increasing

Heat

60/100

Semaphore Park experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This can impact vulnerable populations and increase energy demand.

Key drivers:

·Rising global temperatures
·Urban heat island effect

increasing

Coastal

62/100

Semaphore Park faces a moderate risk from coastal hazards, including sea level rise and coastal erosion. The low-lying coastal areas are particularly vulnerable to inundation during storm surges and high tides.

Key drivers:

·Sea level rise
·Storm surge

stable

Wind

28/100

Moderate wind risk — gusty northerly winds

stable

Storm

24/100

Moderate storm risk — occasional thunderstorms

stable

Social

21/100

Moderate social stability

increasing

Energy

35/100

Moderate energy costs — summer cooling

In-Depth Climate Risk Guides for Semaphore Park

Should I Buy

Property buying guide with climate risk assessment

Flood Risk

Flood zone mapping, historical events, and projections

Bushfire Risk

BAL assessment, vegetation proximity, and fire history

Climate Safety

Multi-hazard safety assessment to 2050

Storm Risk

Severe weather, hail, and wind risk analysis

Heat Risk

Extreme heat days, urban heat island, and cooling costs

Insurance Costs

Premium estimates and insurance availability

Investment Score

Climate-adjusted property investment analysis

Detailed Hazard Analysis

heat Risk

60/100

Semaphore Park experiences moderate heat risk, with increasing average temperatures and more frequent heatwave events projected. This can impact vulnerable populations and increase energy demand.

Primary Drivers

·Rising global temperatures
·Urban heat island effect

Projections (RCP8.5)

2030

6.5

2050

7.2

Data source

flood Risk

65/100

Primary Drivers

·Sea level rise
·Increased rainfall intensity
·Storm surge

Projections (RCP8.5)

2030

7.0

2050

7.8

Data source

coastal Risk

62/100

Primary Drivers

·Sea level rise
·Storm surge
·Coastal erosion

Projections (RCP8.5)

2030

6.7

2050

7.5

Data source

bushfire Risk

21/100

Primary Drivers

·Dry vegetation
·Strong winds
·Ignition sources

Projections (RCP4.5)

2030

2.3

2050

2.5

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums are likely to increase due to the rising risk of flooding and coastal inundation.

Price Impact

Properties in low-lying areas may experience a decrease in value due to increased flood risk.

Buyer Checklist

1.Check flood maps and historical flood data.
2.Assess the property's elevation and drainage.
3.Inquire about insurance costs and coverage.
4.Consider the potential impact of sea level rise on the property.
5.Evaluate the property's vulnerability to heatwaves.

Local Climate Evidence

Flood Evidence

Nearest Waterway: Port River
Elevation Range: 0-5 meters
Flood Zone: Coastal inundation zone

Bushfire Evidence

Distance to Bushland: 5 km to nearest significant bushland
Planning Overlay: Not within a designated bushfire overlay area
Bushfire Prone Area: No

Heat Evidence

Avg January Max Temp: 29.5°C
Heat Stress Days/Year: 3 days

Coastal Evidence

Distance to Coast: 0.5 km
Sea Level Rise Exposure: Moderate exposure to sea level rise
Erosion Risk: Moderate erosion risk

Historical Climate Events

2016

stormModerate

Severe storms caused flash flooding and power outages in Semaphore Park and surrounding areas.

Source

2014

heatwaveModerate

A prolonged heatwave resulted in increased hospital admissions and strain on the electricity grid.

Source

2007

floodMinor

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

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP4.5

Hazard	Today	2030	2050
flood	65	6.9(+0.4)	7.5(+1.0)
bushfire	21	2.2(+0.1)	2.3(+0.2)
heat	60	6.3(+0.3)	6.8(+0.8)
coastal	62	6.7(+0.5)	7.7(+1.5)

Under a moderate emissions scenario, Semaphore Park is projected to experience a slight increase in overall climate risk, with the most significant increases in coastal and flood risks.

CSIRO Climate Projections

Adaptation Recommendations

Upgrade stormwater drainage infrastructure

Near-term

Improve the capacity and efficiency of stormwater drainage systems to reduce the risk of flooding during heavy rainfall events.

Est. cost: Medium

Learn more

Construct coastal defenses

Long-term

Build seawalls, breakwaters, and other coastal defenses to protect against sea level rise and coastal erosion.

Est. cost: High

Learn more

Implement a 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: Low

Learn more

Promote water conservation

Near-term

Encourage residents to conserve water through education and incentives to reduce demand on water resources during droughts.

Est. cost: Low

Learn more

About Semaphore Park's Climate Risk Profile

Semaphore Park, a coastal suburb of Adelaide, is increasingly vulnerable to the impacts of climate change. The primary risks include flooding from heavy rainfall and sea level rise, heatwaves, and coastal erosion. These hazards pose a threat to infrastructure, property values, and the health and safety of residents.

The risk of flooding is exacerbated by the suburb's low elevation and proximity to the coast and waterways. Sea level rise increases the likelihood of coastal inundation during storm surges and high tides. Increased rainfall intensity can also lead to stormwater flooding, particularly in areas with inadequate drainage.

Heatwaves are becoming more frequent and intense, posing a significant health risk to vulnerable populations, such as the elderly and those with chronic health conditions. Rising temperatures also increase energy demand for cooling, placing a strain on the electricity grid.

Coastal erosion is another concern, as rising sea levels and increased storm activity can lead to the loss of beaches and damage to coastal infrastructure. This can impact recreational activities and tourism, as well as property values.

Addressing these climate risks requires a combination of mitigation and adaptation measures. Mitigation efforts focus on reducing greenhouse gas emissions to slow down the rate of climate change. Adaptation measures aim to reduce the vulnerability of the community to the impacts of climate change, such as building flood defenses, improving drainage systems, and implementing heatwave early warning systems.

Data sources: BOM · CSIRO · SA Department for Environment and Water · City of Port Adelaide Enfield

Local Government Resources

City of Port Adelaide Enfield

Climate Strategy Flood Maps Emergency Services

Frequently Asked Questions

What are the main climate change risks for Semaphore Park?

The main climate change risks for Semaphore Park are flooding from heavy rainfall and sea level rise, heatwaves, and coastal erosion. These risks are expected to increase in the future due to rising global temperatures and sea levels.

How will sea level rise affect Semaphore Park?

Sea level rise will increase the risk of coastal inundation during storm surges and high tides, potentially impacting low-lying properties and infrastructure. It will also exacerbate coastal erosion, leading to the loss of beaches and damage to coastal assets.

What can I do to prepare for heatwaves in Semaphore Park?

To prepare for heatwaves, stay indoors in air-conditioned environments, drink plenty of water, avoid strenuous activities during the hottest part of the day, and check on vulnerable neighbors and family members.

What is the council doing to address climate change in Semaphore Park?

The City of Port Adelaide Enfield is implementing a range of measures to address climate change, including upgrading stormwater drainage infrastructure, promoting water conservation, and developing a climate change adaptation plan.

Where can I find more information about climate change risks in Semaphore Park?

You can find more information about climate change risks in Semaphore Park on the City of Port Adelaide Enfield website, the South Australian Department for Environment and Water website, and the Bureau of Meteorology website.

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