The Landsborough Channel was not named correctly on the GA Surface Hydrology Lines dataset. 
I inquired and subsequently the Qld Spacial Help Centre determined ...

The Thompson River confluence begins approximately 12 km north of Muttaburra (see survey plan PL44).

At this point, it meets Landsborough Creek, Dotswood Creek, and Cornish Creek.

The watercourse identified as the Landsborough Channel, situated east of Muttaburra and flowing north to south, has been traced northward to its confluence with Landsborough Creek. To the south, it extends 16 km, where it joins Bangall Creek before reconnecting with the Thompson River.

I have taken these changes into account with mapping of the Landsborough Channel.
