๐Ÿ“ฎ Tanjil South postcode: 3818

Flood Risk in Tanjil South, VIC: 2026 Assessment

Tanjil South, Victoriaยท Baw Baw Shire Councilยท 3818
Tanjil South faces a moderate to high risk of flooding, primarily due to its proximity to waterways and low-lying areas. Recent rainfall patterns and potential for extreme weather events exacerbate this risk.Updated 28 June 2026

Flood Risk Score

10.0/10

Tanjil South faces a moderate to high risk of flooding, primarily due to its proximity to waterways and low-lying areas. Recent rainfall patterns and potential for extreme weather events exacerbate this risk.

Key Facts

Flood Risk
Tanjil South faces a moderate to high risk of flooding, primarily due to its proximity to waterways and low-lying areas. Recent rainfall patterns and potential for extreme weather events exacerbate this risk.
Trend
increasing
Suburb
Tanjil South, VIC
Overall Risk
Medium
Postcode
3825
Highest high-risk exposure
11.1% of land (surface flood)

Flood Risk Analysis

Tanjil South, located in Victoria, 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 Victoria.

The Tanjil River and its tributaries are the main sources of flood risk. Low-lying areas near these waterways are most susceptible. Flash flooding can occur following intense thunderstorms.

Tanjil South faces a moderate to high risk of flooding, primarily due to its proximity to waterways and low-lying areas. Recent rainfall patterns and potential for extreme weather events exacerbate this 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.

Tanjil South sits within ClimateNest's suburb-level hazard model for flood risk. 5.1% of the suburb's land area is mapped in high-risk flood zones and 79.8% 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 Tanjil South.

Tanjil South (postcode 3825) 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 surface flood (11.1% of land in high-risk zones), bushfire (5.5% of land in high-risk zones), riverine flood (5.1% of land in high-risk zones). Exposure is not uniform across Tanjil 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 WaterwayTanjil River
Elevation Range10-50 meters
Flood Zone ClassificationLow to Medium

Historical Events

2011
Moderate

Another period of heavy rainfall led to moderate flooding in the Tanjil South area, causing disruptions to local transport and impacting some agricultural areas. This event reinforced the ongoing flood risk associated with the region's hydrology.

1998
Major

Significant flooding occurred along the Tanjil River and its tributaries following heavy rainfall, impacting low-lying areas of Tanjil South and surrounding agricultural land. Roads were cut and some properties experienced inundation.

Adaptation & Mitigation Actions

Upgrade Stormwater Drainage

Near-term

Invest in upgrading and maintaining local stormwater drainage systems to better handle intense rainfall events and reduce flash flooding.

Est. cost: $50,000 - $200,000

Community Bushfire Preparedness Plan

Immediate

Develop and regularly update a community-wide bushfire preparedness plan, including evacuation routes, communication strategies, and fire-safe property guidelines.

Est. cost: $5,000 - $15,000

Promote Water-Sensitive Urban Design (WSUD)

Near-term

Encourage the adoption of WSUD principles in new developments and retrofits, such as permeable paving and rain gardens, to manage stormwater runoff and reduce flood impact.

Est. cost: $10,000 - $50,000 per property/area

Heatwave Action Plan

Near-term

Establish a local heatwave action plan that includes public awareness campaigns, identification of vulnerable residents, and provision of cooling centers during extreme heat events.

Est. cost: $5,000 - $20,000 annually

Vegetation Management

Near-term

Implement strategic vegetation management around properties and public spaces to reduce fuel loads for bushfires while maintaining ecological balance.

Est. cost: $2,000 - $10,000 annually

Council & Emergency Services

Baw Baw Shire Council
Emergency Services

Data last updated: 28 June 2026

Explore Tanjil South Risk Reports

Frequently Asked Questions

Is Tanjil South at risk of flooding?

Based on available data, Tanjil 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 Tanjil South?

Insurance costs for flood cover in Tanjil 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 Tanjil South?

Yes, flood risk can affect property values in Tanjil 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 Tanjil South?

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

ClimateNest's hazard overlay maps 11.1% of Tanjil South in high-risk zones for surface flood, with a further 81.1% 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 Tanjil South Safe from Climate Risk?

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