Flood Risk in Yattalunga, NSW: 2026 Assessment

Yattalunga, New South Wales· UNKNOWN
Yattalunga faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to localized flooding.Updated 7 May 2026

Flood Risk Score

6.0/10

Yattalunga faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to localized flooding.

Key Facts

Flood Risk
Yattalunga faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to localized flooding.
Trend
increasing
Suburb
Yattalunga, NSW
Overall Risk
Medium
Postcode
2251
Highest high-risk exposure
13.5% of land (bushfire)

Flood Risk Analysis

Yattalunga, located in New South Wales, has a notable 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 data indicates that parts of Yattalunga have been affected by flooding in the past.

Yattalunga faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to localized flooding.

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.

Yattalunga sits within ClimateNest's suburb-level hazard model for flood risk. 3.5% of the suburb's land area is mapped in high-risk flood zones and 82.4% in moderate-risk zones, based on the national hazard overlay. Exposure at this scale varies street by street, which is why an address-level check matters before you buy or insure a specific property in Yattalunga.

Yattalunga (postcode 2251) is tracked in ClimateNest's suburb hazard model, which maps the share of the suburb's land exposed to each hazard at high and moderate levels. The suburb's highest high-risk exposures are bushfire (13.5% of land in high-risk zones), surface flood (10.7% of land in high-risk zones), extreme wind (6.6% of land in high-risk zones). Exposure is not uniform across Yattalunga — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.

Local Hazard Evidence

Nearest WaterwayHawkesbury River
Elevation Range5-20 meters
Flood Zone ClassificationPartially within a 100-year flood zone

Historical Events

2020
Moderate

Significant rainfall led to flash flooding in parts of Yattalunga, causing road closures and property damage.

1990
Moderate

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

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall and reduce the risk of flooding.

Est. cost: Medium

Implement stricter building codes

Near-term

Require new buildings in flood-prone areas to be elevated and designed to withstand flood damage.

Est. cost: Low

Develop a heatwave management plan

Immediate

Establish cooling centers and provide support for vulnerable populations during heatwaves.

Est. cost: Low

Increase community awareness

Long-term

Educate residents about climate risks and adaptation measures.

Est. cost: Low

Bushfire preparedness programs

Near-term

Implement community-based bushfire preparedness programs, including hazard reduction and evacuation planning.

Est. cost: Medium

Council & Emergency Services

Hornsby Shire Council
Emergency Services

Data last updated: 7 May 2026

Explore Yattalunga Risk Reports

Frequently Asked Questions

Is Yattalunga at risk of flooding?

Based on available data, Yattalunga has a notable 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 Yattalunga?

Insurance costs for flood cover in Yattalunga 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 Yattalunga?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Yattalunga 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.

What share of Yattalunga is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 13.5% of Yattalunga in high-risk zones for bushfire, with a further 80.7% in moderate-risk zones. Suburb-level exposure is not uniform — individual properties can differ from these averages, so an address-level check is recommended.

Is Yattalunga Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Yattalunga, New South Wales, covering flood, bushfire, sea level rise and more.

Free instant previewCSIRO-powered data

What A$69 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$69 · Australian addresses only · 8 hazard scores · Insurance trajectory · 2030 & 2050 projections