Flood Risk in Palm Grove, NSW: 2026 Assessment

Palm Grove, New South Wales· Central Coast
Palm Grove faces a moderate risk of flooding, primarily from heavy rainfall and nearby waterways. The risk is expected to increase due to climate change.Updated 30 May 2026

Flood Risk Score

6.5/10

Palm Grove faces a moderate risk of flooding, primarily from heavy rainfall and nearby waterways. The risk is expected to increase due to climate change.

Key Facts

Flood Risk
Palm Grove faces a moderate risk of flooding, primarily from heavy rainfall and nearby waterways. The risk is expected to increase due to climate change.
Trend
increasing
Suburb
Palm Grove, NSW
Overall Risk
Medium
Postcode
2258
Highest high-risk exposure
9.9% of land (surface flood)

Flood Risk Analysis

Palm Grove, 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 lake.

Palm Grove faces a moderate risk of flooding, primarily from heavy rainfall and nearby waterways. The risk is expected to increase due to climate change.

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.

Palm Grove sits within ClimateNest's suburb-level hazard model for flood risk. 4.6% of the suburb's land area is mapped in high-risk flood zones and 74.1% 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 Palm Grove.

Palm Grove (postcode 2258) 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 (9.9% of land in high-risk zones), bushfire (8.6% of land in high-risk zones), extreme wind (5.7% of land in high-risk zones). Exposure is not uniform across Palm Grove — 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 WaterwayTuggerah Lake
Elevation Range5-20 meters
Flood Zone ClassificationPartially within flood zone

Historical Events

2007
Moderate

Major flooding event impacted several properties in Palm Grove after heavy rainfall.

Adaptation & Mitigation Actions

Improve drainage infrastructure

Near-term

Upgrade drainage systems to handle increased rainfall and reduce flood risk.

Est. cost: Medium

Implement bushfire management plan

Immediate

Develop and implement a comprehensive bushfire management plan, including fuel reduction and community education.

Est. cost: Medium

Develop heatwave preparedness plan

Near-term

Create a heatwave preparedness plan to protect vulnerable populations, 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

Community awareness programs

Immediate

Educate residents about climate risks and adaptation strategies.

Est. cost: Low

Council & Emergency Services

Central Coast Council
Emergency Services

Data last updated: 30 May 2026

Explore Palm Grove Risk Reports

Frequently Asked Questions

Is Palm Grove at risk of flooding?

Based on available data, Palm Grove 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 Palm Grove?

Insurance costs for flood cover in Palm Grove 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 Palm Grove?

Yes, flood risk can affect property values in Palm Grove. 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 Palm Grove?

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

ClimateNest's hazard overlay maps 9.9% of Palm Grove in high-risk zones for surface flood, with a further 75.1% 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 Palm Grove Safe from Climate Risk?

Enter your address below for an instant climate risk assessment for Palm Grove, 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