The Moose River originates about 1.7 kilometres (1.1 mi) southeast of Moose Pass and flows southeast for about 6.4 kilometres (4.0 mi) before turning south at its confluence with Campion Creek.

Resplendent Creek was once known as the West Fork Moose River.

[4] The river then turns southeast again for another 8.7 kilometres (5.4 mi).

The last 2 kilometres (1.2 mi) of the river’s course is spent running southwest, under the Yellowhead Highway and into the Fraser shortly after.

[5] Its mouth is located about 0.4 upstream from the Moose River Bridge along the Yellowhead Highway.