Flood Risk in Collinsville, SA: 2026 Assessment

Collinsville, 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.

Historical flood events have impacted properties near the Bowen River. The council provides flood maps and information to help residents prepare.

Collinsville faces a moderate risk of flooding due to its proximity to the Bowen River and susceptibility to heavy rainfall events. Climate change is expected to increase the intensity of rainfall, potentially exacerbating flood risks.

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.

Collinsville sits within ClimateNest's suburb-level hazard model for flood risk. 2.1% of the suburb's land area is mapped in high-risk flood zones and 74.2% 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 Collinsville.

Collinsville (postcode 5418) 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 (12.1% of land in high-risk zones), bushfire (8.8% of land in high-risk zones), extreme wind (3.7% of land in high-risk zones). Exposure is not uniform across Collinsville — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.