The Isaac River is a river and anabranch in Central Queensland, Australia.

Quick Facts Etymology, Location ...

Isaac
Location of Isaac River mouth in Queensland
Etymology	Frederick Nevil Isaac[1]
Location
Country	Australia
State	Queensland
Region	Central Queensland
Physical characteristics
Source
• location	below Moranbah North
• coordinates	21°27′03″S 148°11′40″E
• elevation	245 m (804 ft)
Mouth	confluence with the MacKenzie River
• coordinates	22°52′19″S 149°20′01″E
• elevation	85 m (279 ft)
Length	457 km (284 mi)
Basin size	22,364 km2 (8,635 sq mi)
Basin features
River system	Fitzroy River
Tributaries
• left	Connors River
[2][3]

Close

The headwaters of the river rise south east of Glenden, Queensland and flow in a generally southern direction, crossing the Peak Downs Highway near Moranbah. It continues past Iffley and veers eastward at Leichhardt Downs forming a series of braided channels, and veers south east again and flows past the eastern edge of Junee State Forest and then discharges into the MacKenzie River of which it is a tributary.^[2]

The river has a catchment area of 22,364 square kilometres (8,635 sq mi) of which an area of 474 square kilometres (183 sq mi) is composed of riverine wetlands.^[4]

Yetimarala (also known as Jetimarala, Yetimaralla, and Bayali) is an Australian Aboriginal language of Central Queensland. Its traditional language region is within the local government areas of Central Highlands Region, on the Boomer Range and Broadsound Range and the Fitzroy River, Killarney Station, Mackenzie River and Isaac River.^[5]

The river was named for the pastoralist Frederick Nevil Isaac by the explorer Ludwig Leichhardt who came across the river during his 1845 expedition through the area to Port Essington (now Darwin). Isaac owned Gowrie Station on the Darling Downs and was a keen supporter of Leichhardt.^[1]

• List of rivers of Australia § Queensland