๐Ÿ“ฎ Marshall Mount postcode: 2526

Flood Risk in Marshall Mount, NSW: 2026 Assessment

Marshall Mount, New South Walesยท Shellharbourยท 2526
Marshall Mount 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 31 May 2026

Flood Risk Score

6.5/10

Marshall Mount 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
Marshall Mount 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
Marshall Mount, NSW
Overall Risk
Medium
Postcode
2530
Highest high-risk exposure
12% of land (surface flood)

Flood Risk Analysis

Marshall Mount, 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 Marshall Mount have experienced flooding in the past.

Marshall Mount 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.

Marshall Mount sits within ClimateNest's suburb-level hazard model for flood risk. 10.4% of the suburb's land area is mapped in high-risk flood zones and 61.7% 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 Marshall Mount.

Marshall Mount (postcode 2530) 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 (12% of land in high-risk zones), riverine flood (10.4% of land in high-risk zones), bushfire (7.6% of land in high-risk zones). Exposure is not uniform across Marshall Mount 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 WaterwayMacquarie Rivulet
Elevation Range5-30 meters
Flood Zone ClassificationAreas near Macquarie Rivulet are prone to flooding.

Historical Events

2011
Moderate

Major flooding in the Illawarra region affected parts of Marshall Mount, causing property damage and road closures.

Adaptation & Mitigation Actions

Improve stormwater drainage

Near-term

Upgrade stormwater drainage infrastructure to reduce flood risk.

Est. cost: Medium

Bushfire hazard reduction

Near-term

Implement bushfire hazard reduction programs to reduce fuel loads around properties.

Est. cost: Low

Heatwave early warning system

Immediate

Develop a heatwave early warning system to alert residents of impending heatwaves.

Est. cost: Low

Coastal erosion protection

Long-term

Implement coastal erosion protection measures to protect low-lying areas from sea level rise.

Est. cost: High

Council & Emergency Services

Shellharbour City Council
Emergency Services

Data last updated: 31 May 2026

Explore Marshall Mount Risk Reports

Frequently Asked Questions

Is Marshall Mount at risk of flooding?

Based on available data, Marshall Mount 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 Marshall Mount?

Insurance costs for flood cover in Marshall Mount 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 Marshall Mount?

Yes, flood risk can affect property values in Marshall Mount. 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 Marshall Mount?

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

ClimateNest's hazard overlay maps 12% of Marshall Mount in high-risk zones for surface flood, with a further 66% 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 Marshall Mount Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Marshall Mount, 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