Seton Portage is an historic rural community in British Columbia, Canada, that is about 25 km (16 mi) west of Lillooet, located between Seton Lake and Anderson Lake. "The Portage" was formed about 10,000 years ago when the flank of the Cayoosh Range, which is the south flank of the valley, let go and slid into the middle of what had been a single lake.