Swan River River Levels

Last Updated: January 31, 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.



15-Day Weather Outlook


Summary

Total streamflow across the Swan River was last observed at 639 cfs, and is expected to yield approximately 1,267 acre-ft of water today; about 145% of normal. River levels are high. Average streamflow for this time of year is 441 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 639 cfs. This is also the highest stage along the Swan River, with a gauge stage of 2.62 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.

River Details

Last Updated 2026-01-31
Discharge Volume 1,267 ACRE-FT
Streamflow 639.0 cfs
-9.0 cfs (-1.39%)
Percent of Normal 144.79%
Maximum 7,050.0 cfs
2022-06-22
Seasonal Avg 441 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
639 cfs 2.62 ft -1.39
Swan River At East Patchogue Ny
USGS 01305500
10 cfs 0.47 ft -5.19
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.