The Fraser River at 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

Silverdale students study gym-sized map of the Indigenous Peoples of Canada

The map is one of only five in existence across Canada and is the only one in B.C.

Friends describe murder victim as ‘most caring guy we knew’

Jagvir Malhi of Abbotsford was not involved in gangs or criminal activity, they say

Ten-year sentence for man convicted of belt-strangling death in Abbotsford

Shayne McGenn guilty of manslaughter in 2016 death of David Delaney, 63

Former Mission educator receives national Indigenous role model award

Kimberly Sommer, now in Abbotsford, went to Edmonton last week to receive the Indspire role model award

Gas price drop expected to hit Fraser Valley today

Analyst says to take advantage, warns slight increase may follow

VIDEO: People with diabetes meet their alert dogs

A diabetic alert dog is trained to detect low blood sugar in people who have Type 1 diabetes

Hunter who saved B.C. man pinned inside smashed truck says ‘God was sending me to him’

Sayward man describes chance discovery of Duncan Moffat, 23, in northern Vancouver Island woods

Road-weary Canucks thumped 6-2 by Wild

Vancouver hosts the Montreal Canadiens on Saturday

Toronto private school didn’t report alleged sexual assault to police

Police say a sexual assault at an all-boys Catholic institution was not reported to them

China says butt out; Canada calls for release of “arbitrarily” detained Muslims

A Chinese foreign ministry spokeswoman accused Canada’s envoy of going beyond their diplomatic roles

Dead Saskatoon tattoo artist’s skin removed and preserved

The skin was removed in honour of the well known artist’s work

Metro Vancouver mayors cancel Surrey LRT in favour of SkyTrain

TransLink will immediately suspend work on light rail

Lower Mainland couple missing in Thompson-Okanagan area

Barriere RCMP received a missing persons report for two senior overdue travellers

Vancouver Warriors cancel first 2 weeks of season as labour dispute continues

The announcement means games scheduled for Dec. 1 and Dec. 8 will no longer be played

Most Read