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The Helena River in southwest Western Australia starts below Pony Hill at an elevation of 300m and ends near Guildford at an elevation of 2.79m merging with the Swan River.
The Helena River drops around 297m over its 78.1km length.
The Helena River flows through Helena River Reservoir (139m) on its way to joining the Swan River.
10 creeks and rivers flow into the Helena River. The five longest tributaries are: Darkin River, Piesse Gully, Wariin Brook, Wundabiniring Brook and Manns Gully - click here for a full list of all 10 tributaries of the Helena River.
The Helena River is highlighted in yellow on the map below.
Have you caught or seen fish at Helena River? Contribute your knowledge by clicking here.
Are you a keen bird watcher? Have you been bird watching at Helena River? What birds have you seen at Helena River? Contribute your knowledge by clicking here. As a Bonzle sub-project, we're trying to build Australia's most comprehensive bird location atlas. A big thankyou to all that have contributed and continue to contribute sightings.
Do you know what facilities are available at Helena River? Contribute your knowledge by clicking here.
Bonzle users have reported that Helena River is a good place for jet skiing. Do you know of other recreational activities at Helena River? Is this list accurate? Contribute your knowledge by clicking here.
If you're interested in Rivers and Creeks then you may also be interested in Springs, Waterfalls, Lakes and Dams and Gorges.