Flood Risk in Collaroy, QLD: 2026 Assessment

Collaroy, located in Queensland, 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 Queensland.

Collaroy Beach is particularly vulnerable to coastal inundation during storm surges.

Collaroy faces a moderate risk of flooding, primarily from heavy rainfall and coastal inundation. The area has a history of flooding events, and climate change is expected to increase the frequency and intensity of these events.

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.

Collaroy sits within ClimateNest's suburb-level hazard model for flood risk. 14.7% of the suburb's land area is mapped in high-risk flood zones and 62.1% 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 Collaroy.

Collaroy (postcode 4707) 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 tropical cyclone (15.6% of land in high-risk zones), riverine flood (14.7% of land in high-risk zones), bushfire (13.3% of land in high-risk zones). Exposure is not uniform across Collaroy — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.