Flood Risk in Kurnell, NSW: 2026 Assessment

Kurnell, 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.

Several areas in Kurnell are prone to flash flooding during heavy rainfall events.

Kurnell faces a moderate risk of flooding due to its low-lying coastal location and proximity to waterways. Increased rainfall intensity and sea level rise are expected to 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.

Kurnell sits within ClimateNest's suburb-level hazard model for flood risk. 5.6% of the suburb's land area is mapped in high-risk flood zones and 84.2% 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 Kurnell.

Kurnell (postcode 2231) 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 (9.2% of land in high-risk zones), bushfire (8.7% of land in high-risk zones), riverine flood (5.6% of land in high-risk zones). Exposure is not uniform across Kurnell — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.