Weather Warning
IDV36330
Australian Government Bureau of Meteorology
Victoria
Minor Flood Warning for the Bunyip River
Issued at 10:37 AM EDT on Tuesday 11 Nov 2025.
by the Bureau of Meteorology, Victoria Regional Office on behalf of Melbourne Water
Flood Warning Number: 2
Bunyip Catchment
MINOR FLOODING IS EXPECTED TO OCCUR ON BUNYIP RIVER AT IONA AND CORA LYNN FROM THIS AFTERNOON.
Reissued with correct river levels.
The Bunyip River catchment has recorded rainfall averaging about 26 mm since 09:00 AM Monday 10 November 2025. The Western Port catchment has recorded rainfall averaging about 26 mm for the same period. Rainfall totals of 3-10 mm is forecast for the catchment Tuesday 11 November 2025.
Water levels of the Bunyip River at various locations are rising in response to the rain.
Tarago River:
The level of Tarago Reservoir is currently at 156.97 metres, below the spillway level of 157.92 metres.
Bunyip River to Iona:
The level of the Bunyip River at Iona is currently at 1.45 metres, below the Minor Flood Level, and rising. It is expected to exceed the Minor Flood Level (2.10 metres) this afternoon.
Bunyip River downstream of Iona:
The level of the Bunyip River at Cora Lynn is currently at 2.81 metres, below the Minor Flood Level, and rising. It is expected to exceed the Minor Flood Level (3.10 metres) this afternoon.
Minor flooding in the Bunyip River catchment is expected to affect low-lying areas adjacent to the waterway. The ford at Cora Lynn will be closed to traffic this morning.
The river heights at 10:06 AM Tuesday 11 November 2025 were:
Sites in Tarago River catchment
Tarago Reservoir: 156.97 metres, rising
Tarago River at Neerim South: 1.14 metres, rising
Tarago River at Drouin West: 0.72 metres, rising
Sites in Bunyip River catchment
Bunyip River at Headworks: 0.45 metres, rising
Bunyip River at Tonimbuk: 1.59 metres, rising
Bunyip River at Longwarry North: 1.29 metres, rising
Bunyip River at Iona: 1.45 metres, rising
Bunyip River at Cora Lynn: 2.81 metres, rising
Yallock Outfall Drain at Cora Lynn: 0.41 metres, steady
Bunyip River at Koo Wee Rup: 1.76 metres, falling
Other sites in Western Port catchment
Gumscrub Creek at Pakenham: 1.37 metres, rising
Toomuc Creek at Pakenham: 0.91 metres, steady
Deep Creek at Pakenham: 1.31 metres, rising
Kennedy Creek at Pakenham: 0.79 metres, falling
Cardinia Creek at Officer: 1.32 metres, falling
Cardinia Creek at Cardinia: 0.77 metres, rising
The next warning will be issued by 10 AM on Wednesday 12 November 2025.