Fairground for fish: a solution to help navigate man-made barriers theiet.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from theiet.org Daily Mail and Mail on Sunday newspapers.
A significant landslide occurred at the remote canyon location on June 23, 2019. About 110,000 cubic metres of rocky debris enough to fill about 45 Olympic-sized swimming pools fell into the river.
It created a five-metre-tall waterfall barrier that prevented migrating salmon from moving beyond the landslide to reach their spawning grounds deeper in the BC interior. There have been major impacts to the reproductive cycle of several key Upper Fraser salmon populations.
Kiewit was previously contracted to perform the first mitigation efforts beginning late 2019 and into 2020 at a cost of $70 million. They successfully built access to the work site, cleared significant amounts of debris, blasted boulders, and widened the river channel and constructed an initial “nature-like” fishway, which improved migration conditions through the area.