Question period was lively in Youbou Hall in a meeting last year after a geotechnical report produced by Ebbwater Consulting was presented on the increased potential for landslides in the area due to climate change. (File photo)

CVRD releases updated landslide hazard mapping for the Youbou area

Information to be used to inform planning and development in the area

In response to ongoing concerns about landslides on the steep slopes above Cowichan Lake, the Cowichan Valley Regional District has released updated landslide hazard mapping in the Youbou area.

In 2019, the CVRD completed a number of natural hazard risk assessments as part of its Climate Adaptation Program.

One of these assessments identified high risks to both people and property from landslides on the steep slopes above Cowichan Lake.

While the assessment identified a number of properties in potential hazard areas, site-level geotechnical assessments were recommended for future development.

The CVRD worked with Palmer Environmental Consulting Group and Stantec Consulting to refine and update the landslide hazard mapping.

Through modeling over 68,000 simulated landslides, the consultants mapped the likelihood and damage from such landslides and were able to identify a limit of modeled run out, beyond which the risk of a landslide causing damage is very low.

RELATED STORY: SLOPE STUDY RAISES FEAR OF LANDSLIDES IN YOUBOU AND LAKE COWICHAN

The updated mapping has resulted in a reduced hazard rating for a number of properties previously identified in the 2019 assessment.

The debris flow modelling was made possible through the acquisition of high-resolution LiDAR imagery, and shows the furthest down slope a landslide would travel.

The updated landslide hazard mapping will be used to inform planning and development in the Youbou area.

Going forward, proposed development within identified hazard areas would require additional geotechnical analysis before development can proceed.

The CVRD is exploring the potential to extend this mapping to other areas of potential landslide hazard within the region.

The Youbou landslide hazard mapping report is available on the CVRD website at www.cvrd.bc.ca/hazards, as well as other information and resources for a variety of natural hazard awareness and preparedness.

Affected property owners are receiving direct correspondence by mail from the CVRD, and are encouraged to contact CVRD Environmental Services division with questions or concerns.

municipal politics

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Sonia Furstenau column: MCFD needs overhaul of requirements for social workers

BCASW advocating for mandatory registration for social workers with B.C. College of Social Workers.

Chris Wilkinson column: An ode to my caregiver

You help keep me safe. You help keep me strong.

Stevenson reflects on her seven years as Chemainus Elementary School principal

Strong community and parent support for the school always evident during her tenure

Drivesmart column: Advisory bike lanes: what should you do?

Imagine a narrow road that has no markings at all used by drivers

Crews work overnight to try to put out wildfire on Pender Island

Fire department and B.C. Wildfire Service crews extinguishing fire in ‘extremely difficult terrain’

Cooler days help crews fighting fire on mountainside north of Cowichan Lake

Firefighters making progress, but it’s ‘slow-going,’ says B.C. Wildfire Service

Crews work overnight to try to put out wildfire on Pender Island

Fire department and B.C. Wildfire Service crews extinguishing fire in ‘extremely difficult terrain’

Michael Buble among 13 British Columbians to receive Order of B.C.

Ceremony will be delayed to 2021 due to COVID-19

U.S. border communities feel loss of Canadian tourists, shoppers and friends

Restrictions on non-essential travel across the Canada-U.S. border have been in place since March 2`

Rollout of COVID-19 Alert app faces criticism over accessibility

App requires users to have Apple or Android phones made in the last five years, and a relatively new operating system

Alleged impaired driver sparks small wildfire near Lytton after crash: B.C. RCMP

Good Samaritans prevented the blaze from getting out of control

Most Read