๐Ÿ“ฎ Kotara South postcode: 2289

Flood Risk in Kotara South, NSW: 2026 Assessment

Kotara South, New South Walesยท Newcastleยท 2289
Kotara South faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential riverine flooding.Updated 21 May 2026

Flood Risk Score

6.5/10

Kotara South faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential riverine flooding.

Key Facts

Flood Risk
Kotara South faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential riverine flooding.
Trend
increasing
Suburb
Kotara South, NSW
Overall Risk
Medium
Postcode
2289
Highest high-risk exposure
20% of land (bushfire)

Flood Risk Analysis

Kotara South, 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.

Some properties in low-lying areas are susceptible to flash flooding during heavy rainfall events.

Kotara South faces a moderate risk of flooding due to its proximity to waterways and low-lying areas. Intense rainfall events can lead to stormwater runoff and potential riverine 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.

Kotara South sits within ClimateNest's suburb-level hazard model for flood risk. 5.7% of the suburb's land area is mapped in high-risk flood zones and 65.8% 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 Kotara South.

Kotara South (postcode 2289) 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 (20% of land in high-risk zones), surface flood (8.9% of land in high-risk zones), riverine flood (5.7% of land in high-risk zones). Exposure is not uniform across Kotara South โ€” 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 WaterwayIronbark Creek
Elevation Range10-30 meters
Flood Zone ClassificationPartially within a 1% AEP flood zone

Historical Events

2007
Moderate

Major flooding in the Hunter region, impacting Newcastle and surrounding suburbs including Kotara South. Several homes were inundated and roads were closed.

Adaptation & Mitigation Actions

Improve stormwater drainage

Near-term

Upgrade stormwater infrastructure to handle increased rainfall intensity and reduce the risk of flash flooding.

Est. cost: Medium

Implement heatwave early warning system

Immediate

Develop a system to alert vulnerable populations of impending heatwaves and provide guidance on how to stay safe.

Est. cost: Low

Increase tree canopy cover

Long-term

Plant more trees to provide shade and reduce the urban heat island effect.

Est. cost: Medium

Retrofit homes for energy efficiency

Near-term

Provide incentives for homeowners to upgrade insulation, install energy-efficient appliances, and improve ventilation to reduce energy consumption and improve comfort during heatwaves.

Est. cost: High

Council & Emergency Services

Newcastle City Council
Emergency Services

Data last updated: 21 May 2026

Explore Kotara South Risk Reports

Frequently Asked Questions

Is Kotara South at risk of flooding?

Based on available data, Kotara South has a notable flood risk profile. Flood risk varies by address โ€” check your specific property for precise flood zone mapping and elevation data with ClimateNest.

What flood insurance costs can I expect in Kotara South?

Insurance costs for flood cover in Kotara South 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 Kotara South?

Yes, flood risk can affect property values in Kotara South. 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 Kotara South?

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

ClimateNest's hazard overlay maps 20% of Kotara South in high-risk zones for bushfire, with a further 62.9% in moderate-risk zones. Suburb-level exposure is not uniform โ€” individual properties can differ from these averages, so an address-level check is recommended.

Is Kotara South Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Kotara South, 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 ยท Australian addresses only ยท 8 hazard scores ยท Insurance trajectory ยท 2030 & 2050 projections