McArthur Island Boat Launch Kamloops Trails Posted on Wednesday, September 13, 2017 by KamloopsTrailsWednesday, September 13, 2017 The river has receded so it is just possible to get a kayak out through the channel now, but in a week, it will be a muddy portage. The gate is now closed so we have to haul a kayak down the ramp too. Related