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Climate Risk Assessment: Alyangula, Northern Territory

Alyangula, Northern Territory· UNKNOWN
Medium Risk
Updated Mar 2026

Alyangula faces significant climate-related risks, particularly from coastal hazards and heat stress. Sea level rise and increased storm intensity pose a threat to coastal infrastructure and communities. Rising temperatures will exacerbate heat stress, especially for vulnerable populations.

Overall Risk Score

5.5/10
Medium

Confidence: Medium

Hazard Breakdown

Flood
4.0
Bushfire
3.0
Heat
7.0
Coastal
8.0

Detailed Hazard Analysis

heat Risk

7.0/10

Alyangula experiences high temperatures and humidity, particularly during the wet season. Climate change is expected to exacerbate heat stress, impacting vulnerable populations and infrastructure.

Primary Drivers

  • ·Rising global temperatures
  • ·Increased humidity
  • ·Urban heat island effect (minimal)

Projections (RCP8.5)

2030

7.5

2050

8.0

Data source

flood Risk

4.0/10

Alyangula faces a moderate risk of flooding, primarily from heavy rainfall events and potential storm surges. The flat terrain and coastal proximity contribute to this risk.

Primary Drivers

  • ·Sea level rise
  • ·Increased rainfall intensity
  • ·Storm surges

Projections (RCP8.5)

2030

4.5

2050

5.0

Data source

coastal Risk

8.0/10

Alyangula is highly vulnerable to coastal hazards, including sea level rise, storm surges, and coastal erosion. The low-lying coastal areas are particularly at risk.

Primary Drivers

  • ·Sea level rise
  • ·Increased storm intensity
  • ·Coastal erosion

Projections (RCP8.5)

2030

8.5

2050

9.0

Data source

bushfire Risk

3.0/10

The risk of bushfire in Alyangula is relatively low due to the island's environment and management practices. However, dry vegetation during the dry season can still pose a threat.

Primary Drivers

  • ·Dry vegetation
  • ·Wind patterns
  • ·Ignition sources

Projections (RCP4.5)

2030

3.2

2050

3.5

Data source

What This Means for Property Owners

Insurance Outlook

Increasing premiums due to coastal risks.

Price Impact

Potential for decreased property values in vulnerable areas.

Buyer Checklist

  • 1.Check flood history of the property.
  • 2.Assess coastal erosion risk.
  • 3.Ensure adequate insurance coverage.
  • 4.Consider energy efficiency for cooling.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Gulf of Carpentaria
Elevation Range
0-10 meters
Flood Zone
Coastal Flood Zone

Low-lying coastal areas are most vulnerable to flooding.

View council flood map

Bushfire Evidence

Distance to Bushland
Within 1km
Planning Overlay
Not readily available
Bushfire Prone Area
No

Bushfire risk is lower compared to other regions but still present.

Heat Evidence

Avg January Max Temp
32°C
Heat Stress Days/Year
15 days

High humidity exacerbates heat stress.

Coastal Evidence

Distance to Coast
0.5 km
Sea Level Rise Exposure
High
Erosion Risk
Moderate

Historical Climate Events

2014
stormModerate

Tropical Cyclone Marcia caused heavy rainfall and minor flooding in the region.

Source
2015
heatwaveModerate

Prolonged heatwave conditions impacted the region, leading to increased heat stress.

Source
2018
floodMinor

Heavy rainfall caused localized flooding in low-lying areas.

Source
2023
stormModerate

Tropical Cyclone Jasper brought heavy rainfall and strong winds to the region, causing minor damage.

Source

Climate Outlook to 2050

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

HazardToday20302050
flood4.04.2(+0.2)4.5(+0.5)
bushfire3.03.1(+0.1)3.2(+0.2)
heat7.07.4(+0.4)7.8(+0.8)
coastal8.08.5(+0.5)9.5(+1.5)

Under a moderate emissions scenario, Alyangula is projected to experience a slight increase in overall climate risk, with coastal hazards and heat stress being the most significant contributors.

CSIRO Climate Projections

Adaptation Recommendations

Coastal Protection Measures

Immediate

Invest in seawalls, beach nourishment, and other coastal protection measures to reduce the impact of sea level rise and storm surges.

Est. cost: High

Learn more

Improved Building Standards

Near-term

Implement stricter building codes to ensure new and existing buildings are resilient to flooding, heat, and strong winds.

Est. cost: Medium

Learn more

Heat Action Plan

Immediate

Develop and implement a heat action plan to protect vulnerable populations during extreme heat events, including cooling centers and public awareness campaigns.

Est. cost: Low

Learn more

Ecosystem Restoration

Long-term

Restore and protect coastal ecosystems, such as mangroves and saltmarshes, to provide natural buffers against coastal hazards.

Est. cost: Medium

Learn more

About Alyangula's Climate Risk Profile

Alyangula, located on Groote Eylandt in the Northern Territory, is particularly vulnerable to the impacts of climate change due to its coastal location and tropical climate. The primary risks include coastal inundation from sea level rise and storm surges, increased heat stress, and potential flooding from heavy rainfall events.

The low-lying nature of the island makes it susceptible to coastal erosion and inundation. Sea level rise is projected to worsen these risks, potentially impacting infrastructure, housing, and natural ecosystems. Storm surges, driven by more intense cyclones, could cause significant damage to coastal areas.

Rising temperatures will lead to increased heat stress, particularly during the already hot and humid wet season. This poses a health risk to vulnerable populations, such as the elderly and those with pre-existing health conditions. It can also impact outdoor workers and increase energy demand for cooling.

While the risk of bushfire is relatively lower compared to other parts of Australia, dry vegetation during the dry season can still pose a threat. Effective land management practices are crucial to mitigate this risk.

Addressing these climate risks requires a combination of adaptation and mitigation strategies. This includes investing in coastal protection measures, improving building resilience to heat and flooding, and reducing greenhouse gas emissions.

Data sources: BOM · CSIRO · NT Emergency Services · East Arnhem Regional Council

Local Government Resources

East Arnhem Regional Council

Climate StrategyFlood MapsEmergency Services

Frequently Asked Questions

What are the main climate change risks for Alyangula?

The main risks include sea level rise, storm surges, increased heat stress, and potential flooding from heavy rainfall events.

How will sea level rise affect Alyangula?

Sea level rise is projected to worsen coastal erosion and inundation, potentially impacting infrastructure, housing, and natural ecosystems.

What can be done to protect against coastal hazards?

Coastal protection measures, such as seawalls and beach nourishment, can help reduce the impact of sea level rise and storm surges. Ecosystem restoration can also provide natural buffers.

How can I prepare for extreme heat events?

Stay hydrated, seek air-conditioned environments, and check on vulnerable neighbors. Follow local heat action plans and public awareness campaigns.

Where can I find more information about climate change in the Northern Territory?

The Northern Territory Government's Department of Environment and Natural Resources and the CSIRO provide valuable information and resources on climate change impacts and adaptation strategies.

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