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

Ocean “Blob” returns to North Coast of B.C.

A 2,000 kilometre patch of warm ocean water could signal a warm winter in Prince Rupert

‘Police are ready’ for legal pot, say Canadian chiefs

But Canadians won’t see major policing changes as pot becomes legal

VIDEO: This is what buying legal pot in B.C. looks like

Take a look inside B.C.’s first and only legal pot shop located in Kamloops

10 things still illegal in the new age of recreational cannabis

Pot is legal – but there are still a lot of rules, and breaking some could leave you in jail

CCRD Candidates detail their election platforms

More candidate profiles to come….

Tommy Chong says cannabis legalization makes him proud to be a Canadian

Legendary marijuana advocate and comedian celebrates cultural milestone at Kelowna event

B.C. passenger caught smoking weed in a car issued $230 fine

Saanich police did a field sobriety test on the driver and deemed it safe for him to drive

Payette invites critics to ‘come and spend a few days’ with her

Governor General Julie Payette made her first official to B.C. back in March

More pot stores expected in B.C. in coming ‘weeks and months’: attorney general

Attorney General David Eby and Public Safety Minister Mike Farnworth visited the new BC Cannabis Store in the province’s Interior

Telus launches charitable foundation to help vulnerable youth

The Telus Friendly Future Foundation complements other social initiatives by the company, including Mobility for Good

Police say suspicious death of B.C. artist ruled a homicide

Patrick Zube Aylward’s body was found in a residence on a rural road outside of Seton Portage, west of Lillooet, B.C.

Temporary roads being built in areas affected by landslide in northern B.C.

Emergency Management BC news release says Disaster Financial Assistance is available to eligible residents of the Peace River Regional District who may have been affected by the landslides

B.C. tickets win big in Lotto Max draw

Jackpot carried over; B.C. tickets share Max Millions prizes

Most Read