Flood Risk in St Georges Basin, SA: 2026 Assessment

St Georges Basin, located in South Australia, 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 South Australia.

The area has a history of flooding during heavy rainfall events, particularly around the basin foreshore.

St Georges Basin is susceptible to flooding due to its low-lying coastal location and proximity to the St Georges Basin waterway. Intense rainfall events can lead to inundation of low-lying areas.

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.

St Georges Basin sits within ClimateNest's suburb-level hazard model for flood risk. 2% of the suburb's land area is mapped in high-risk flood zones and 74.9% 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 St Georges Basin.

St Georges Basin (postcode 5064) 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 (11.4% of land in high-risk zones), bushfire (10.6% of land in high-risk zones), extreme wind (4.1% of land in high-risk zones). Exposure is not uniform across St Georges Basin — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.