Swan River River Levels

Last Updated: February 20, 2026

The Swan River is a significant river in Western Australia, running approximately 65 kilometers from its source in the Perth Hills to the Indian Ocean.


Summary

Total streamflow across the Swan River was last observed at 648 cfs, and is expected to yield approximately 1,285 acre-ft of water today; about 149% of normal. River levels are high. Average streamflow for this time of year is 435 cfs, with recent peaks last observed on 2022-06-22 when daily discharge volume was observed at 7,050 cfs.

Maximum discharge along the river is currently at the Swan River Near Bigfork Mt reporting a streamflow rate of 648 cfs. This is also the highest stage along the Swan River, with a gauge stage of 2.63 ft at this location. This river is monitored from 2 different streamgauging stations along the Swan River, the highest being situated at an altitude of 3,081 ft, the Swan River Near Bigfork Mt.




15-Day Weather Outlook


River Details

Last Updated 2026-02-20
Discharge Volume 1,285 ACRE-FT
Streamflow 648.0 cfs
-16.0 cfs (-2.41%)
Percent of Normal 148.87%
Maximum 7,050.0 cfs
2022-06-22
Seasonal Avg 435 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Swan River Near Bigfork Mt
USGS 12370000
648 cfs 2.63 ft -2.41
Swan River At East Patchogue Ny
USGS 01305500
9 cfs 0.46 ft 0
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Swan River is a river in the south west of Western Australia. Its Aboriginal Noongar name is the Derbarl Yerrigan. The river runs through the metropolitan area of Perth, Western Australia's capital and largest city.