Climate Risk Profile for Mannum Waters, SA

Mannum Waters, South Australia· UNKNOWN
Medium Risk
Updated Mar 2026

Mannum Waters faces moderate climate risks, primarily from flooding and heatwaves. The suburb's location near the Murray River increases its vulnerability to riverine flooding, while rising temperatures exacerbate heat-related risks during summer.

Overall Risk Score

5.2/10
Medium

Confidence: Medium

Hazard Breakdown

Flood
6.5
Bushfire
3.0
Heat
6.0
Coastal
1.0

Detailed Hazard Analysis

heat Risk

6.0/10

Mannum Waters experiences high temperatures during summer, increasing the risk of heatwaves and heat stress, particularly for vulnerable populations.

Primary Drivers

  • ·Rising average temperatures
  • ·Increased frequency of heatwaves
  • ·Urban heat island effect (limited)

Projections (RCP8.5)

2030

6.5

2050

7.0

Data source

flood Risk

6.5/10

Mannum Waters faces a moderate risk of flooding, primarily from the Murray River. Riverine flooding can inundate low-lying areas and impact properties close to the riverbank.

Primary Drivers

  • ·Increased rainfall intensity
  • ·Riverine overflow
  • ·Climate change

Projections (RCP8.5)

2030

7.0

2050

7.5

Data source

coastal Risk

1.0/10

As an inland suburb, Mannum Waters has a negligible risk from coastal hazards such as sea level rise and coastal erosion.

Primary Drivers

  • ·Not applicable

Projections (RCP8.5)

2030

1.0

2050

1.0

Data source

bushfire Risk

3.0/10

The bushfire risk in Mannum Waters is relatively low due to the cleared land and proximity to the river. However, surrounding areas with vegetation pose a potential threat.

Primary Drivers

  • ·Dry vegetation in surrounding areas
  • ·Wind patterns
  • ·Human activity

Projections (RCP8.5)

2030

3.2

2050

3.5

Data source

What This Means for Property Owners

Insurance Outlook

Insurance premiums may increase in the future due to the rising risk of flooding and heatwaves.

Price Impact

Properties in flood-prone areas may experience a decrease in value.

Buyer Checklist

  • 1.Check flood maps and insurance costs.
  • 2.Assess the property's vulnerability to heatwaves.
  • 3.Consider the potential impact of climate change on property value.

Local Climate Evidence

Flood Evidence

Nearest Waterway
Murray River
Elevation Range
10-20 meters
Flood Zone
Areas adjacent to the Murray River are designated as flood zones.

Local flood studies have identified areas at risk of inundation during high river flows.

View council flood map

Bushfire Evidence

Distance to Bushland
5-10 km
Planning Overlay
Check with the local council for bushfire overlay maps.
Bushfire Prone Area
No

While not a high-risk area, residents should maintain their properties to reduce potential fire hazards.

Heat Evidence

Avg January Max Temp
32.5°C
Heat Stress Days/Year
5 days

The number of days exceeding 35°C is projected to increase in the coming decades.

Coastal Evidence

Distance to Coast
100 km
Sea Level Rise Exposure
Not applicable
Erosion Risk
Not applicable

Historical Climate Events

2016
floodModerate

The Murray River experienced moderate flooding, impacting low-lying areas in Mannum Waters.

Source
2019
heatwaveModerate

A prolonged heatwave affected South Australia, with Mannum Waters experiencing several days of extreme temperatures.

Source
2023
floodModerate

Significant rainfall in the Murray-Darling Basin led to increased river flows and moderate flooding in Mannum Waters.

Source

Climate Outlook to 2050

Projections based on CSIRO and BOM climate modelling. Scenario: RCP8.5

HazardToday20302050
flood6.57.0(+0.5)7.5(+1.0)
bushfire3.03.2(+0.2)3.5(+0.5)
heat6.06.8(+0.8)7.2(+1.2)
coastal1.01.01.0

By 2030, Mannum Waters is projected to experience an increase in flood risk due to more intense rainfall events. Heatwave frequency and intensity are also expected to rise, posing challenges for public health and infrastructure.

CSIRO Climate Projections

Adaptation Recommendations

Improve Flood Defenses

Near-term

Invest in infrastructure to mitigate flood risks, such as levees and improved drainage systems.

Est. cost: High

Learn more

Develop Heat Action Plan

Immediate

Implement a heat action plan to protect vulnerable residents during heatwaves, including cooling centers and public awareness campaigns.

Est. cost: Medium

Learn more

Enhance Bushfire Preparedness

Long-term

Maintain vegetation around properties and develop community bushfire preparedness plans.

Est. cost: Low

Learn more

Upgrade Infrastructure

Long-term

Upgrade critical infrastructure to withstand extreme weather events, including power grids and water supply systems.

Est. cost: High

Learn more

About Mannum Waters's Climate Risk Profile

Mannum Waters, located in South Australia, is susceptible to several climate-related risks. The most significant threat is riverine flooding due to its proximity to the Murray River. Increased rainfall intensity and potential river overflows can lead to inundation of low-lying areas, impacting properties and infrastructure.

Heatwaves pose another considerable risk to Mannum Waters. Rising average temperatures and more frequent heatwave events can cause heat stress, particularly for vulnerable residents such as the elderly and those with pre-existing health conditions. The urban heat island effect, although limited in this area, can further amplify these risks.

Bushfire risk is relatively low compared to other regions in South Australia, but surrounding areas with vegetation still present a potential threat. Dry vegetation and wind patterns can contribute to the spread of bushfires, posing a risk to properties on the outskirts of the suburb.

Coastal risks are negligible for Mannum Waters due to its inland location. Sea level rise and coastal erosion do not pose a direct threat to the suburb.

Data sources: BOM · CSIRO · SA SES · Mid Murray Council

Local Government Resources

Frequently Asked Questions

What are the main climate change risks for Mannum Waters?

The main climate change risks for Mannum Waters are flooding from the Murray River and increased heatwave frequency and intensity.

How will climate change affect property values in Mannum Waters?

Properties in flood-prone areas may experience a decrease in value due to the increased risk of flooding.

What is the council doing to address climate change risks?

The Mid Murray Council is developing strategies to mitigate flood risks and protect residents during heatwaves.

How can I prepare my home for flooding?

You can prepare your home for flooding by elevating appliances, installing flood barriers, and ensuring proper drainage.

Where can I find information about emergency services in Mannum Waters?

You can find information about emergency services on the SA State Emergency Service (SES) website.

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