|Name origin: Frederick Roe, the son of John Septimus Roe|
|Part of||Gascoyne River catchment|
|- left||Mulga Wash|
|- elevation||488 m (1,601 ft)|
|Mouth||confluence with the Lyons River|
|- location||Cobra Station homestead, Gascoyne|
|- elevation||357 m (1,171 ft)|
|Length||77 km (48 mi)|
The headwaters of the river rise in the Kenneth Range. The river flows in a south-westerly direction, joined by one minor tributary until it reaches its confluence with the Lyons River near Cobra Station homestead. The river descends 131 metres (430 ft) over 89 kilometres (55 mi) course.
- Western Australian Land Information Authority. "History of river names". Archived from the original on 2015-02-16. Retrieved 4 September 2011.
- "Map of Frederick River, WA". Bonzle Digital Atlas. 2008. Retrieved 23 September 2015.
- "River Monitoring Stations - Lyons River". Department of Water. Government of Western Australia. 2008. Retrieved 8 February 2009.
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