The Big Bar landslide on the Fraser River is by far the most urgent crisis facing Fraser River wild salmon and there has been a lot of talk about how well (or poorly) our governments have handled this emergency. Watershed Watch attended a detailed briefing in December with the federal, provincial and First Nations officials leading the core response team. They outlined the steps taken so far and the options that have been explored. Here is our take.
First, some background. The slide could not have come at a worse time. Several populations of Fraser River chinook, sockeye, coho and steelhead are considered “endangered” or “threatened” by federal scientists and 2019 was already shaping up to be the worst year on record for returning salmon. And then, sometime last spring or winter, 100,000 tons of rock—including boulders the size of cars and buses—fell into a narrow canyon upstream of Lillooet. The slide created a five metre drop in the river and an impassable barrier for all but the largest salmon, blocking their access to over half of the 240,000 km2 watershed which extends north of Prince George and out to the Rocky Mountains. For the First Nations, wildlife and other residents of this vast area who depend on salmon, it is a profound tragedy.
Aerial bombardment was explored with a site visit from the Canadian Armed Forces but it was determined that bombing the blockage with fighter jets or other means could easily trigger further and more damaging rock slides. Other water flow engineering experts, including BC Hydro and the US Army Corps of Engineers, were also consulted.
Most of the blockage is underwater in the form of massive boulders that could not be broken apart and removed until the water levels dropped. However, extensive work was needed to be ready for this opportunity.
Safely accessing the site has been a major challenge. The blockage is at the bottom of an extremely deep, steep canyon with large amounts of unstable rock that had to be cleared for crews to work safely beneath it. There was no riverbank to work from and workers have done an impressive job at building up a pathway next to the river. Crews are now working from this man-made riverbank as they demolish the giant submerged boulders and remove them during this crucial low water period.
According to the response team, public communications on the situation were limited so as not to influence the bidding process for the rock removal work. In January, a $17.6 million contract was awarded to American engineering giant Peter Kiewit Sons, and now the rock removal work is underway. They must work quickly before the waters rise with the spring melt. Now that the contract has been awarded, we are calling on the government response team to release more information publicly about work done so far and what is planned over the coming weeks and months.
Are they doing a good job in dealing with this crisis? Fisheries and Oceans Canada has been criticized for taking too long to discover the slide, not taking action quickly enough once they knew about it and for being wildly optimistic about the efficacy of their fish rescue efforts, which involved trapping and then helicoptering salmon around the blockage. Only a small fraction of the already tiny salmon run was moved around the slide, and only a fraction of the rescued fish survived the ordeal to spawn. Dozens of people worked their tails off, and the government spent a lot of money attempting to rescue these fish. They had to try and they deserve our thanks for doing so. It just would have played a lot better if DFO had not counted those fish before they’d spawned.
But here’s the thing. After 20 years of watching DFO and the provincial government mismanage wild salmon, I have to say that on the whole, and despite some blunders, their efforts at Big Bar have been pretty darn impressive. If they applied this much urgency and funding to salmon conservation every year, and across the province, our rivers would have a lot more salmon in them.
Where the government deserves public scorn, is in all of the other harms they are still permitting to be visited upon our wild salmon. The Big Bar disaster highlights how B.C. wild salmon have been catastrophically mismanaged. Past and current DFO management priorities have reduced many upper Fraser salmon runs to a fraction of their historic abundance, leaving them without the resilience needed to handle a natural disaster like the Big Bar slide.
While hundreds of thousands of taxpayer dollars were being spent flying salmon around the blockage, thousands of fish from those same endangered populations were being killed by fishers in the Salish Sea and the lower Fraser River.
Not only are we overfishing from endangered populations, we continue to destroy valuable salmon habitats, suck too much water out of their streams and expose them to diseases and parasites from fish farms. Obsolete flood control structures are blocking over 1500 kilometres of salmon nursery habitat in the lower Fraser valley. In our warming climate, which is wreaking havoc on ocean food webs and freshwater flow patterns, we need to manage wild salmon populations for resilience. That means protecting and restoring their habitat, getting salmon farms out of the water and changing the way we fish. And those are the things we are pushing for every day here at Watershed Watch.
But make no mistake: upper Fraser salmon runs will be toast if the Big Bar blockage doesn’t get removed, and fast.
More information on the Big Bar landslide:
DFO Big Bar information bulletins
Government response team website
Lessons Must Be Learned from Big Bar Landslide, Jack Emberly, BC Local News, Feb. 8, 2020
Media Release: Federal government measures failed to protect endangered Chinook salmon in 2019, Feb. 5, 2020
Great Article! Thanks to all the hard working and caring people who are doing their part to protect Fraser River salmon runs.
I applaud Aaron on his research and his comments. Something you young people need to know. There are 5 times the number of people on this planet that there should be. All that’s left now is the crying and that’s being optimistic. I also take great exception to the government hiring out of country / province firms for a BC problem.
What you appear to miss here Aaron, in your otherwise good article, is the Alouette and Coquitlam dams also block salmon with impunity from the Fisheries Act. As the interior runs are in a desperate threat from this slide, we must look at rebuilding the runs of the past in the lower Fraser.
About 20 km. S of Lillooet is the historical Slide, known locally as The Shooting Gallery” About 1,000 years ago the East Side slope crashed into the Fraser. The debris blocked the river for many months. The First nations starved that winter. Up from Lillooet, at Keatly Creek Historic Site is the remains of the abandoned village site / Qwiggly holes. Villagers, those who survived found local valleys with enough deer and fish to keep them alive.
I do agree with the writer, that the gauntlet any migrating salmon must go through – from the open ocean to the Fraser River – the walls of commercial nets and thousands of sport fishing hooks are more likely to do in the Fraser River Run – forever!! than a natural slide.!
How about an update for Mid March. Is more blasting scheduled? Did the American engineering team leave?
Hi Howard – Here is an update from a couple days ago. Looks like they are making progress. https://www.pac.dfo-mpo.gc.ca/pacific-smon-pacifique/big-bar-landslide-eboulement/bulletins/2020-04-03-eng.html