Flood Risk in Tygalgah, SA: 2026 Assessment

Tygalgah, 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 records indicate that parts of Tygalgah have been inundated in past flood events. The Tweed Shire Council has implemented flood mitigation measures, but further action is needed to address the increasing risk.

Tygalgah is located near the Tweed River and is susceptible to flooding from heavy rainfall and riverine overflow. Climate change is expected to increase the frequency and intensity of extreme rainfall events, exacerbating flood 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.

Tygalgah sits within ClimateNest's suburb-level hazard model for flood risk. 1.8% of the suburb's land area is mapped in high-risk flood zones and 93% 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 Tygalgah.

Tygalgah (postcode 5308) 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 (10.5% of land in high-risk zones), surface flood (9.6% of land in high-risk zones), extreme wind (5.3% of land in high-risk zones). Exposure is not uniform across Tygalgah — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.