The Fraser River at Carey Point in Chilliwack on May 10, 2018. (Paul Henderson/ The Progress)

Fraser Valley in wait-and-see mode for flood risk from freshet

River Forecast Centre predicts “bank full conditions” by next week

While the combination of high snowpack, warm weather and a heavy rainfall has led to a worst-case flooding scenario in the B.C. interior, the Lower Mainland is left waiting to see just how high the Fraser River will get.

And the head of the B.C. River Forecast Centre said Friday recent extreme weather has driven rivers up “much, much earlier than normal.”

David Campbell said while the hot weather with rain increases the risks, temperature alone is a concern.

“Hot is in and of itself concerning over the next seven days as water is rising throughout the region making its way down into the Fraser River system, which rises fairly rapidly from headwater down to the Lower Mainland,” Campbell said in a conference call Friday.

Campbell said the Mission gauge – the measure used by most communities to monitor river levels – was at five metres on Friday. The 5.5-metre mark signals “bank full conditions,” and Campbell said that should be surpassed by the long weekend, pushing to the six- to 6.5-metre range by late next week.

By Friday, the river at Hope was running at about 9,000 cubic metres per second (m3/s), a rate that should surpass 10,000 m3/s by the weekend and hit 12,000 m3/s by the end of next week.

The provincial government said Thursday it is encouraging local governments and First Nations communities along the lower Fraser River to prepare for potential flooding,

“The lower Fraser has not seen this combination of weather conditions – including high temperatures, snow melt and riverflow – for a number of years,” according to the Ministry of Public Safety and Solicitor General.

An evacuation alert was issued by the City of Chilliwack on Wednesday for six properties at Carey Point, an area outside the city’s dike system.

• READ MORE: City of Chilliwack issues evacuation alert to properties outside dike

The City said the move was precautionary, noting that conditions can change rapidly during the spring freshet. Residents in the alert area are being contacted by city officials.

The City is recommending they be prepared to leave the area on short notice, and director of engineering David Blain said Friday the residents have been provided with sandbags.

As some communities, such as Grand Forks, are experiencing extreme flooding, some people have evoked the massive flood of 1948, which devastated Chilliwack.

Blain said, however, that not only is that level of water not forecast to come down the Fraser, but the city’s diking infrastructure has greatly improved in the 70 years since then.

While even record flows should not affect the city, it’s the areas outside the dike system that are at most risk. Even there, most of the homes should be high enough, according to Blain. Carey Point is certainly at risk, but the 20-or-so homes north of Minter Country Garden on the west side of Young Road have remained unaffected even at the highest water levels in the last 50 years.

Blain said those homes are built high enough that they were unaffected in 2012, and even when the Mission gauge hit seven metres in 1972, those homes remained dry.

The river level is a dynamic situation with many factors playing into it. Continue to visit www.theprogress.com for updates on the water levels on the Fraser River.

• READ MORE: Chilliwack residents outside the dike told to be ready to evacuate (June 2012)


@PeeJayAitch
paul.henderson@theprogress.com

Like us on Facebook and follow us on Twitter.

Just Posted

The Chilliwack Progress helps local couple locate man after a chance encounter

The McGowans donated their motorized scooter to Roger Sicard after seeing his need for one

Ethan Bowen nets two as Chilliwack Chiefs trouce Trail Smoke Eaters

The Chiefs routed Trail 7-2 in a Sunday matinee at Prospera Centre, improving to 24-10-0-0.

Santa joins kids for Christmas in the Forest in Chilliwack

Annual holiday party and fundraiser helps students at Leap For Joy Open Air Learning

Mike McCardell in town for book-signing at Coles in Chilliwack

His newest book, Shoelaces Are Hard: And Other Thoughtful Scribbles, is his 12th to date

Photos: The Contenders rock the Blue Moose Coffee Shop Friday

Valdy and Gary Fjellgaard came together as (The) Contenders to play music… Continue reading

VIDEO: Highway overpass protest against United Nations ‘compact’ on immigration

Demonstrators say Canada will have less control over who is allowed in the country

Break-in at home of detained Chinese Huawei executive

Meng Wanzhou was detained in Vancouver on America’s request

5 to start your day

TransLink reveals new plans for proposed Surrey-Langley SkyTrain, 81-year-old woman waits 90 minutes for a taxi in Pitt Meadows and more

Natural gas rates will go up in B.C. on Jan. 1

Regions could pay up to $68 more

Top House Dems raise prospect of impeachment, jail for Trump

It could be an “impeachable offense” if it’s proven that President Donald Trump directed illegal hush-money payments to women during the 2016 campaign.

Macron addresses France amid protests; is it too late?

Paris monuments reopened, cleanup workers cleared debris and shop owners tried to put the city on its feet again Sunday.

CUPE calls off Flair Airlines job action citing job security concerns

The union says it’s going to challenge Flair’s move at the Canada Industrial Relations Board before proceeding with any job action.

Trump looking at several candidates for new chief of staff

Trump’s top pick for the job, Nick Ayers, is out of the running and Trump is now soliciting input on at least four individuals.

Canadian physicist collects Nobel Prize

Canada’s Donna Strickland is one of three winners of this year’s Nobel Prize for Physics.

Most Read