Mount Cheam in B.C.’s eastern Fraser Valley. (Wikimedia Commons)

High snowpack could lead to floods in wildfire-ravaged B.C. interior

Provincial snowpack sits at 127 per cent as of April 1

A higher-than-usual snowpack in April could lead to increased flooding risk in B.C.’s wildfire-ravaged interior, officials say.

River Forecast Centre hydrologist Jonathan Boyd said this winter’s snowpack sits at 127 per cent – 32 percentage points higher than last winter’s.

“The provincial average was 123 per cent of normal in 2012 … and there was considerable flooding throughout the province,” Boyd told reporters Monday.

Areas like the Okanagan and Similkameen, where the snowpack sits at a record-breaking 152 per cent, could be at risk for higher flooding. The risk for anything above 135 per cent is extreme.

“Last year in the Okanagan, the snowpack was 105 per cent of normal, but the lake still experienced record inflows,” Boyd said.

A higher-than-normal flood risk is expected in the centre’s Cariboo Chilcotin, Thompson Okanagan, west coast and Kootenay Boundary regions, where wildfires burned hundreds of thousands of hectares of forest last summer.

The risk comes as fires burn away trees that provide shade and allow for slower melting.

Heavy melts in those regions could lead to riverbank erosion, as well as damage to dikes.

“Due to the fires, there’ll be a lot more debris in rivers going downstream … which can lead to erosion along banks and dykes,” Boyd said.

However, he cautioned that snowpacks were only one facet of flood risk.

“Weather patterns during the snow melt season play a critical role in weather or not flooding occurs,” he added.

“Intense or prolonged rainfall or extreme temperatures are important factors that can lead to flooding even in areas with a normal snowpack.”

B.C. spent most of this past winter under La Nina conditions, which tend to be cooler and accumulate more precipitation for B.C.’s southern half.

The April snowpack statistics are important, he said, because 95 per cent of the snowpack for the year has already accumulated.

However, with this year’s La Nina conditions, snow could continue to pile up throughout April and May.

“Snow basin indices tend to increase by two to five per cent in April,” said Boyd.

Snowmelt in B.C. typically begins in mid- to late-April.

Just Posted

Kelowna golf course ready and open for spring business

Two Eagles Golf Course opened Saturday, more to come

Kelowna-Lake Country MLA hopes annual climb will promote peace

MLA Norm Letnick’s 5th Annual Spring Climb for Health & World Peace is April 6

Possible assault to bus driver in Kelowna

A minor bus crash was reported just after 8 p.m. Friday night

Car crash nearly sends car over embankment in West Kelowna

RCMP search for driver of alleged stolen vehicle that caused crash

Update: Highway 3 reopened following rockslide near Keremeos

The slide occurred Friday March 22, at about 8 p.m. between Red Bridge and Standing Rock

Sparks fly as SUV speeds down wrong side of Highway 1 trying to flee RCMP

Captured on video, the vehicle headed westbound against oncoming traffic before crashing

Calgary captain has 3 points as Flames torch Canucks 3-1

Giordano leads way as Alberta side cracks 100-point plateau

Okanagan woman launches sewing studio

“I know there’s a lot of people up and down the valley that would love to sew.”

1,300 cruise ship passengers rescued by helicopter amid storm off Norway’s coast

Rescue teams with helicopters and boats were sent to evacuate the cruise ship under extremely difficult circumstances

Letter: Stop raising the minimum wage

To the editor: The government is looking for ways to put more… Continue reading

Letter: Immigration will not help other countries, or our own

To the editor: Firearms are not the culprit in all those massive… Continue reading

Letter: Sprawl destroying natural landscape

To the editor: I agree with the assessment by Ian Pooley in… Continue reading

Former Okanagan teen found safe after disappearing from YVR airport

Ethan Burnett, 14, was found safe in Kelowna on March 22

B.C. university to offer first graduate program on mindfulness in Canada

University of the Fraser Valley says the mostly-online program focuses on self-care and well being

Most Read