Frederick River

Frederick
EtymologyFrederick Roe, the son of John Septimus Roe
Location
CountryAustralia
StateWestern Australia
RegionGascoyne, Pilbara
Physical characteristics
SourceKenneth Range
  locationPilbara
  coordinates23°56′59″S 117°9′57″E / 23.94972°S 117.16583°E / -23.94972; 117.16583
  elevation488 m (1,601 ft)
Mouthconfluence with the Lyons River
  location
Cobra Station homestead, Gascoyne
  coordinates
24°11′17″S 116°36′20″E / 24.18806°S 116.60556°E / -24.18806; 116.60556
  elevation
357 m (1,171 ft)
Length77 km (48 mi)
Discharge 
  locationmouth
Basin features
River systemGascoyne River catchment
Tributaries 
  leftMulga Wash

The Frederick River is a river that is located in the Gascoyne and Pilbara regions of Western Australia.

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.

The river was named in 1866 by the explorer Edward Hooley who was on expedition in the area after Frederick Roe, the son of John Septimus Roe.