Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Trout River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Trout River, the highest being situated at an altitude of ft, the .
The Trout River is a tributary of the Liard River in far northern British Columbia, Canada, flowing northwest from headwaters at 58°44′N 126°14′W, near Muncho Lake, to meet the Liard at the community of Liard River. It is at the upper end of the Grand Canyon of the Liard, which is part of Liard River Corridor Provincial Park and Protected Area.