Flood Risk in Farnham, NSW: 2026 Assessment

Farnham, New South Wales· Hawkesbury
Farnham faces a moderate risk of flooding due to its proximity to the Hawkesbury River and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.Updated 29 May 2026

Is Farnham Safe from Climate Risk?

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

Farnham faces a moderate risk of flooding due to its proximity to the Hawkesbury River and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.

Key Facts

Flood Risk
Farnham faces a moderate risk of flooding due to its proximity to the Hawkesbury River and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.
Trend
increasing
Suburb
Farnham, NSW
Overall Risk
Medium
Postcode
2820
Region
Regional NSW
Median property value
$550,000
Dominant hazard
extreme heat

Flood Risk Analysis

Farnham, 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.

Historical flood records indicate that parts of Farnham have been inundated in the past. The council maintains flood maps and provides guidance on flood preparedness.

Farnham faces a moderate risk of flooding due to its proximity to the Hawkesbury River and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.

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.

Farnham located in Regional NSW (postcode 2820), is a New South Wales suburb tracked by ClimateNest. The suburb's median property value is $550,000, and understanding climate exposure is becoming a standard part of due diligence for buyers, lenders and insurers pricing property in Farnham.

Across the six hazard axes ClimateNest models, the dominant climate risk for Farnham in this type is extreme heat. Insurance signals for the suburb point to premiums rising moderately (+25% by 2030). The actual risk of any single home can only be confirmed with an address-level report.

Whether you are buying, selling or renovating in Farnham, extreme heat is the hazard to weigh first. Local council planning controls, state hazard mapping and lender climate policies each reference this kind of suburb-level signal, and property decisions in Farnham are increasingly made with an address-level climate report in hand.

Local Hazard Evidence

Nearest WaterwayHawkesbury River
Elevation Range10-30 meters
Flood Zone ClassificationYes

Historical Events

2011
Major

Major flooding along the Hawkesbury River inundated large parts of Farnham, causing significant damage to properties.

1990
Moderate

The Hawkesbury River experienced moderate flooding, impacting low-lying areas of Farnham.

Adaptation & Mitigation Actions

Improve Flood Defenses

Near-term

Invest in infrastructure to mitigate flood risk, such as levees, drainage improvements, and flood-proofing of buildings.

Est. cost: High

Reduce Bushfire Fuel Loads

Near-term

Implement vegetation management programs to reduce fuel loads in surrounding bushland and create firebreaks.

Est. cost: Medium

Develop Heatwave Response Plan

Immediate

Establish a heatwave response plan to protect vulnerable populations during periods of extreme heat, including cooling centers and public awareness campaigns.

Est. cost: Low

Enhance Emergency Preparedness

Long-term

Improve community awareness of climate risks and promote emergency preparedness through education and training programs.

Est. cost: Low

Council & Emergency Services

Hawkesbury City Council
Emergency Services

Data last updated: 29 May 2026

Explore Farnham Risk Reports

Frequently Asked Questions

Is Farnham at risk of flooding?

Based on available data, Farnham 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 Farnham?

Insurance costs for flood cover in Farnham 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 Farnham?

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

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

Enter your address below for an instant climate risk assessment for Farnham, 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