Flood Risk in Modbury, SA: 2026 Assessment

Modbury, 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.

Local drainage infrastructure may be insufficient to handle increasingly intense rainfall events.

Modbury faces a moderate risk of flooding, primarily from heavy rainfall events and potential overflow from nearby creeks and drainage systems. Development and urbanization have increased runoff, exacerbating the 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.

Modbury 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 87.9% 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 Modbury.

Modbury (postcode 5092) 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 bushfire (12% of land in high-risk zones), surface flood (6.8% of land in high-risk zones), riverine flood (5.6% of land in high-risk zones). Exposure is not uniform across Modbury — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.