Coastal B.C. Braces for Continued Rainfall and Landslide Risk
Heavy rainfall continues to batter coastal British Columbia, triggering a mudslide in Coquitlam that knocked out power to approximately 5,000 customers on Thursday. While power has largely been restored, with around 20 customers still affected as of 10:30 a.m. PT, the region remains on high alert as the atmospheric river event intensifies.
Coquitlam Mudslide and Emergency Response
The mudslide occurred in the 1900 block of Pipeline Road, north of Upper Coquitlam River Park. Coquitlam Fire and Rescue reported that four homes and two industrial properties were impacted, but thankfully, no injuries have been reported. Crews from Coquitlam SAR successfully rescued eight people, two dogs, and a cat from the affected area.
Authorities are urging the public to avoid the area until further notice. The disruption also temporarily suspended West Coast Express service, with commuters advised to utilize the SkyTrain and bus connections.
Widespread Flood and Landslide Warnings
The current weather system is far from over. Environment Canada warns that the heaviest rainfall is expected Thursday night into Friday morning across Metro Vancouver, the Sea-to-Sky region, and western Vancouver Island. Prolonged heavy rain could lead to pooling water on roads, travel delays, and potential landslides, particularly in vulnerable areas like steep slopes and recent burn scars.
The Fraser Valley and areas including the North Shore, Coquitlam, Maple Ridge, Howe Sound, Whistler, and Pemberton are bracing for significant rainfall. Some areas could receive up to 130 millimetres of rain by Friday.
Evacuation Orders on the Central Coast
Further north, the Central Coast Regional District has issued evacuation orders for parts of Ocean Falls and Martin Valley due to increased flooding and landslide risks. Residents in the affected areas have been instructed to evacuate immediately. The area has a history of landslides, including events in 1965, 2015, and 2025.
The River Forecast Centre has issued High Streamflow Advisories for the Coldwater River, Skagit River, Similkameen River, and upstream Tulameen River, advising residents to stay clear of rapid-flowing rivers and unstable riverbanks.
Understanding the Increasing Risk of Landslides in B.C.
The recent events highlight a growing concern: the increasing frequency and intensity of landslides in British Columbia. Several factors contribute to this trend, including increasingly intense rainfall events linked to climate change, deforestation, and development in vulnerable areas.
Did you grasp? B.C.’s mountainous terrain makes it particularly susceptible to landslides, especially during periods of heavy rainfall or rapid snowmelt.
The Role of Atmospheric Rivers
Atmospheric rivers, like the one currently impacting B.C., are concentrated plumes of moisture in the atmosphere. They can deliver significant amounts of rainfall in a short period, overwhelming drainage systems and increasing the risk of landslides and flooding. The intensity of these events is projected to increase with climate change.
Deforestation and Land Utilize
Deforestation and improper land use practices can exacerbate landslide risk. Trees help stabilize slopes by anchoring soil with their roots. Removing trees can weaken the soil structure, making it more prone to erosion and landslides.
Preparing for Future Weather Events
Given the increasing risk of extreme weather events, it’s crucial for residents in vulnerable areas to accept proactive steps to prepare.
Pro Tip: Create an emergency kit with essential supplies like food, water, medication, a first-aid kit, and a flashlight. Ensure you have a plan for evacuating your home if necessary.
FAQ: Landslides and Flood Preparedness
- What should I do if I see a landslide? Evacuate the area immediately and report it to local authorities.
- How can I protect my property from flooding? Clear gutters and downspouts, ensure proper drainage, and consider installing flood barriers.
- Where can I identify information about evacuation orders and alerts? Check your local government’s website and social media channels, as well as EmergencyInfoBC.
Stay informed about weather forecasts and heed warnings from local authorities. By taking proactive steps, residents can mitigate the risks associated with landslides and flooding and protect their communities.
Explore further: Learn more about landslide preparedness and flood safety on the PreparedBC website.
