Flood Risk in Hawkesbury, NSW: 2026 Assessment

Hawkesbury, New South Wales· UNKNOWN
Hawkesbury is highly susceptible to flooding due to its location on the Hawkesbury River floodplain. The risk is projected to increase with more intense rainfall events.Updated 22 Mar 2026

Is Hawkesbury Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Hawkesbury, New South Wales, 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

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Flood Risk Score

Not assessed

Hawkesbury is highly susceptible to flooding due to its location on the Hawkesbury River floodplain. The risk is projected to increase with more intense rainfall events.

Key Facts

Flood Risk
Hawkesbury is highly susceptible to flooding due to its location on the Hawkesbury River floodplain. The risk is projected to increase with more intense rainfall events.
Trend
increasing
Suburb
Hawkesbury, NSW
Overall Risk
High

Flood Risk Analysis

Hawkesbury, located in New South Wales, 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 New South Wales.

The Hawkesbury-Nepean Valley is one of the largest and most complex floodplains in NSW.

Hawkesbury is highly susceptible to flooding due to its location on the Hawkesbury River floodplain. The risk is projected to increase with more intense rainfall 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.

Local Hazard Evidence

Nearest WaterwayHawkesbury River
Elevation Range10-100 meters
Flood Zone ClassificationYes

Historical Events

2011
Moderate

Significant flooding along the Hawkesbury River impacted low-lying areas.

1990
Major

Major flooding of the Hawkesbury River caused widespread damage to homes and businesses.

Adaptation & Mitigation Actions

Improve Flood Defenses

Immediate

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

Est. cost: High

Strengthen Bushfire Preparedness

Immediate

Implement measures to reduce bushfire risk, such as hazard reduction burns and community education programs.

Est. cost: Medium

Develop Heat Action Plan

Near-term

Create a plan to protect vulnerable populations during heatwaves, including cooling centers and public awareness campaigns.

Est. cost: Low

Enhance Emergency Response

Near-term

Improve emergency response capabilities to deal with extreme weather events, including better communication systems and evacuation plans.

Est. cost: Medium

Promote Climate-Resilient Building Design

Long-term

Encourage the construction of buildings that are more resistant to flooding, bushfires, and extreme heat.

Est. cost: Medium

Council & Emergency Services

Hawkesbury City Council
Emergency Services

Data last updated: 22 March 2026

Explore Hawkesbury Risk Reports

Frequently Asked Questions

Is Hawkesbury at risk of flooding?

Based on available data, Hawkesbury 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 Hawkesbury?

Insurance costs for flood cover in Hawkesbury 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 Hawkesbury?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Hawkesbury 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 Hawkesbury Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Hawkesbury, New South Wales, 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