Fraser Valley Flooding is being held back by sandbags, dikes and stacked boulders as the Chilliwack River approaches its expected crest after days of heavy rain, officials say. A local state of emergency for the Chilliwack area remains active and evacuation alerts covered just under 40 homes on Friday (ET). The BC River Forecast Centre has issued a flood watch while Environment Canada warnings and an ongoing atmospheric river warn that rivers and streams remain stressed.
Fraser Valley Flooding — defenses, alerts and the river’s peak
Sandbags, dikes and stacks of giant rocks are being used along the Chilliwack River; photos show an excavator working among large boulders on the riverbank. The Fraser Valley Regional District declared a local state of emergency for the Chilliwack area and said the prolonged rainfall has raised the potential harms to people, property, infrastructure and the environment. District director Patti MacAhonic said, “I think people are feeling more hopeful than they did at first. ” The district said the state of emergency will remain in effect until the threat to public safety is resolved and that residents of properties under alert should be ready to leave at a moment’s notice.
Officials warned the river is supposed to peak around 1 a. m. Saturday (ET), and planners said if current projections hold they expect to “ride this one out. ” The BC River Forecast Centre issued a flood watch for rivers and streams in the Fraser Valley, Metro Vancouver, Howe Sound and the Sea-to-Sky corridor and the Sunshine Coast, noting recent rainfall arrived on top of previous totals while freezing levels remained elevated and contributed to snowmelt.
Atmospheric river, forecasts and warnings
An Environment Canada meteorologist described the current atmospheric river as unusual for its duration and timing, and warned its effects will last for days even after the system ends. Brian Proctor said the system causing the atmospheric river will have ended by Friday morning (ET), but communities “will need a prolonged period of dry weather” because some drainage basins are beyond their capacity to run off the moisture. Environment Canada warnings issued Friday (ET) noted heavy rain combined with mountain snowmelt could lead to bloated river systems and the potential for flooding.
An orange alert for rain, heavy at times, remained in effect on Friday (ET) for the central and eastern Fraser Valley, with a lower-level yellow alert up for the Fraser Canyon and portions of southeastern British Columbia. The BC River Forecast Centre and local authorities also posted high streamflow advisories across much of the southern part of the province; a snowfall warning remained for the South Peace region for 10 to 15 centimetres of snow.
Evacuations, rescues and immediate responses
Local search and rescue crews in Coquitlam evacuated eight residents and three pets by helicopter after a mudslide on Thursday (ET). Ian Cunnings, who oversaw the efforts, said it was not safe to rescue the residents trapped on the other side of the slide by foot, because of the pile of debris. The mudslide response underscores the immediate hazards teams are facing while managing rising flows and unstable ground.
Photos and field work show active shore reinforcement where crews have placed boulders and worked heavy equipment to buttress banks. The combination of recent rainfall and elevated freezing levels means runoff from mountain snow remains a central concern for emergency planners and the BC River Forecast Centre.
What comes next: authorities say monitoring will continue through the weekend and the state of emergency will stay in place until threats to public safety are resolved. Brian Proctor cautioned that recovery will take days and that gusty winds and changing temperatures could follow when the system clears. Residents and emergency teams are preparing for the uncertain hours after the expected crest, staying ready to respond if the situation deteriorates as the region moves past this phase of fraser valley flooding.
