Flood Risk in Rosehill, NSW: 2026 Assessment

Rosehill, located in New South Wales, 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 New South Wales.

Several properties in Rosehill are located within identified flood zones.

Rosehill faces a notable risk of flooding due to its proximity to the Parramatta River and low-lying areas. Climate change is expected to increase the frequency and intensity of heavy rainfall events, exacerbating this 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.

Rosehill sits within ClimateNest's suburb-level hazard model for flood risk. 4.8% of the suburb's land area is mapped in high-risk flood zones and 68.4% 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 Rosehill.

Rosehill (postcode 2142) 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 (11.5% of land in high-risk zones), bushfire (11.5% of land in high-risk zones), extreme wind (4.9% of land in high-risk zones). Exposure is not uniform across Rosehill — individual properties can sit well above or below these averages, so an address-level check is recommended before buying, selling or insuring.