Authorities on Monday said a camping party discovered the body of a hiker who went missing near Mount St. Helens in mid-October.

Garrett M. Canada, 18, was found deceased in the Swift Reservoir by a group of scouts staying at the Swift Forest Camp east of Cougar on Saturday, the Skamania Sheriff's Office said.

Canada, a Kelso resident, was reported missing Oct. 15 while hiking near Lava Canyon, prompting an extensive, multi-day search.

Evidence from the search suggested Canada fell into water near one of the trail's many waterfalls.

The Clark County Medical Examiner's Office will perform an autopsy on Canada.

-- Shane Dixon Kavanaugh

skavanaugh@oregonian.com

503-294-7632 || @shanedkavanaugh