What Really Caused the Chilcotin Landslide?

Dr. Younes Alila (Forest Hydrology expert, UBC) dives deep into the complex factors behind the July 2024 Chilcotin Landslide

youtu.be/-b7Be3Lk6DI?...

#ChilcotinLandslide #BCForestry #Hydrology #SustainableForestry #Groundwater #ClimateRisk

Province says river flows around Chilcotin landslide are stable, pulse of water reached the ocean - BC News During a news conference on Thursday, Connie Chapman, executive director of water management with the ministry water, land and resource stewardship, said flows around the landslide, located at Farwell

ICYMI: The province says the pulse of water which breached a landslide blocking the #ChilcotinRiver has now made its way to the mouth of the #FraserRiver at the ocean.
www.castanet.net/news/BC/5006... - Castanet News

#ChilcotinLandslide

Residents describe sound of roaring river, breaking trees of B.C.'s landslide waters - BC News Max Paulhus says he could hear wood breaking and a roaring sound before an approaching surge of water raced down the Fraser River after breaking free from a landslide upstream.

A landslide last week in Farwell Canyon, south of #WilliamsLake, dammed the #ChilcotinRiver and created a lake about 11 kilometres long behind the slide.
Water started flowing over the top of the landslide on Monday:
www.castanet.net/news/BC/5004... - Castanet News

#ChilcotinLandslide

"the water is filled with trees, branches and sediment, and could become a problem" -- the mayor of Hope

you see where having Hope gets you.

#ChilcotinLandslide

Fraser River's landslide waters to reach Hope, B.C., and Lower Mainland today. – Energeticcity.ca VANCOUVER — High waters that flowed over top of a massive landslide in British Columbia's Chilcotin River are churning in the Fraser River towards British

“Fraser River's landslide waters to reach Hope, B.C., and Lower Mainland today.” energeticcity.ca/2024/08/07/f... via Energetic City

#BCFlood #ChilcotinLandslide #ChilcotinRiver #FraserRiver #HopeBC #YVR

Fire probably not the cause of Chilcotin landslide: experts Scientists are cautioning against a rush to pin the blame on wildfires alone — despite a climate-linked rise in both wildfires and fire-associated landslides in B.C.

“Fire probably not the cause of Chilcotin landslide: experts”:
www.nationalobserver.com/2024/08/02/n... - Canada’s National Observer

#ChilcotinLandslide #ChilcotinRiver

High resolution satellite image of a large landslide impounding a lake, which has begun to overtop and carve through the landslide debris

Absolutely beautiful high-res #PlanetLabs SkySat imagery of the #ChilcotinLandslide from about 10am this morning, 24 hours after it began to be incised by floodwaters.

Landslide Dams the Chilcotin River Debris from a landslide in British Columbia blocked the river’s flow for several days before water found a way through.

NASA Earth Observatory put together a nice story and before-and-after slider of the #ChilcotinLandslide t.co/bSZuga49y5

Chilcotin River: Water from landslide to reach Hope Tuesday B.C. says a "big pulse" of debris and sediment-laden water is expected to work its way down to the Fraser River to Hope Tuesday.

“Water from dam caused by landslide expected to reach Hope by midday Tuesday”:
vancouver.citynews.ca/2024/08/06/c... - City News Vancouver

#BCFlood #ChilcotinLandslide #ChilcotinRiver #FraserRiver #HopeBC

#ChilcotinLandslide flood has passed Fraser River at Big Bar gauge, peaking at 3640 m3/s. On L is an annotated hydrograph for past week. On R is the same but for the past 365 days. We were lucky that Fraser was at historically low levels!

The lake behind #ChilcotinLandslide has begun to flow over the dam. Let's hope for nothing too rapid as the dam is incised and breached.

LiDAR difference map of the #ChilcotinLandslide, flown by Brian Menounos and @hakaiinstitute.bsky.social system shows about 6x10^6 m3 of change. Will be very interesting to see how this is incised as the flood begins in the coming days.

New modelling has province no longer fearing the worst from Chilcotin River landslide - BC News The provincial government is more confident today than it was days ago the Chilcotin River will naturally overtop the dam that formed in a recent landslide and the risk to communities downstream is Li

New modelling has province no longer fearing the worst from #ChilcotinRiver landslide:
www.castanet.net/news/BC/5000... - Castanet News

#BCFlood #ChilcotinLandslide

B.C. makes flood plans for possible 'worst case' if landslide bursts from river Minister Bowinn Ma says the best-case scenario for a landslide blocking the Chilcotin River is a gentle clearing that doesn’t take debris down the river.

B.C.’s Emergency Management Minister Bowinn Ma says the best-case scenario for a landslide blocking the #ChilcotinRiver is a gentle clearing that doesn’t take debris down the river.
www.cheknews.ca/b-c-makes-fl... - CHEK News

#BCFlood #ChilcotinLandslide

B.C. planning for worst-case scenario if Chilcotin River landslide bursts | Globalnews.ca The province issued an emergency alert late Friday, warning people anywhere on the Chilcotin River to evacuate immediately.

As of Saturday morning, emergency alerts are still in place because of the remote but massive landslide that’s blocking the #ChilcotinRiver. globalnews.ca/news/1067950... - Global BC

#BCFlood #ChilcotinLandslide

Satellite image of a landslide on the Chilcotin River

I wish we could post videos on this platform. Alas. here is a high-res satellite image fo the #ChilcotinLandslide and the impounded lake, which grew to about 9km in length by yesterday morning (still growing!).

Hydrograph of Fraser River flow showing steep decline after a landslide blocked flow in the Chilcotin River, and then rebounding.

Fraser River at Big Bar Creek (08MD013) shows discharge rebounding after #ChilcotinRiver landslide. Possibly dam has burst, possibly something else (storm in the basin upstream? Diurnal variability?). Hopefully Brian Menounos & Marten Geertsema will know more after visit today. #ChilcotinLandslide