Flood Risk in Numbaa, NSW: 2026 Assessment

Numbaa, New South Wales· UNKNOWN
Numbaa faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.Updated 25 May 2026

Flood Risk Score

6.0/10

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

Key Facts

Flood Risk
Numbaa faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Climate change is expected to increase rainfall intensity, exacerbating flood risk.
Trend
increasing
Suburb
Numbaa, NSW
Overall Risk
Medium
Postcode
2540
Highest high-risk exposure
14.3% of land (bushfire)

Flood Risk Analysis

Numbaa, 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 inundation in low-lying areas near the Shoalhaven River.

Numbaa faces a moderate risk of flooding due to its proximity to waterways 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.

Numbaa sits within ClimateNest's suburb-level hazard model for flood risk. 7.6% of the suburb's land area is mapped in high-risk flood zones and 68.3% 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 Numbaa.

Numbaa (postcode 2540) 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 (14.3% of land in high-risk zones), riverine flood (7.6% of land in high-risk zones), extreme wind (5.6% of land in high-risk zones). Exposure is not uniform across Numbaa — 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 WaterwayShoalhaven River
Elevation Range5-20 meters
Flood Zone ClassificationPartially within flood zone

Historical Events

2017
Moderate

Significant rainfall led to flash flooding and riverine flooding in the area.

2011
Moderate

Major flooding of the Shoalhaven River caused widespread inundation in low-lying areas.

Adaptation & Mitigation Actions

Upgrade Drainage Infrastructure

Near-term

Improve drainage systems to mitigate flood risk from increased rainfall intensity.

Est. cost: Medium

Implement Bushfire Management Strategies

Near-term

Reduce fuel loads and improve firebreaks to minimize bushfire risk.

Est. cost: Medium

Develop Heatwave Action Plan

Immediate

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

Est. cost: Low

Protect Coastal Areas

Long-term

Implement coastal protection measures, such as seawalls and beach nourishment, to mitigate erosion and inundation.

Est. cost: High

Council & Emergency Services

Shoalhaven City Council
Emergency Services

Data last updated: 25 May 2026

Explore Numbaa Risk Reports

Frequently Asked Questions

Is Numbaa at risk of flooding?

Based on available data, Numbaa 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 Numbaa?

Insurance costs for flood cover in Numbaa 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 Numbaa?

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

Elevation is a critical factor in flood risk. Properties at higher elevations within Numbaa 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 Numbaa is exposed to high bushfire risk?

ClimateNest's hazard overlay maps 14.3% of Numbaa in high-risk zones for bushfire, with a further 55.7% 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 Numbaa Safe from Climate Risk?

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

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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