Flood Risk in Manjimup, WA: 2026 Assessment

Manjimup, located in Western 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 Western Australia.

Historical flood data indicates that areas near the Lefroy Brook have experienced flooding in the past. Improved drainage infrastructure is needed to mitigate future flood risks.

Manjimup faces a moderate risk of flooding, primarily from heavy rainfall events and riverine flooding along the Lefroy Brook and other local waterways. The risk is expected to increase with climate change due to more intense rainfall.

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.

Manjimup 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 68.8% 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 Manjimup.

Manjimup (postcode 6258) 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 (23% of land in high-risk zones), tropical cyclone (8.4% of land in high-risk zones), riverine flood (5.6% of land in high-risk zones). Exposure is not uniform across Manjimup — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.