Osoyoos Lake shows tepid growth as long weekend approaches

Similkameen and Okanagan rivers showing diminished flows into lake as week wears on

Rising water in Osoyoos Lake appears to have slowed down Thursday, as rivers feeding into the lake show shrinking water flow.

Officials told Osoyoos residents during a public information session Tuesday evening they expect to see the lake exceed the 1972 level of 917 feet, while remaining below the known record of 918.84 from 1894, as this week’s hot weather melts what remains of the high elevation snowpack.

However, while Osoyoos Lake had begun growing in Wednesday after scraping the 916-foot mark, it began to slow down later in the day, continuing its tepid growth Thursday morning, reaching 916.27 feet.

Related: Osoyoos Lake expected to clear historic 917-foot mark

However, Environment Canada’s real-time hydrometric data show a diminished Similkameen River Thursday morning compared with the same time on Wednesday. The river runs in daily crests and troughs — the former the result of daytime heat melting mountain snow and the latter the result of cooler nights slowing the freshet.

For three days, that ebb and flow had been peaking higher each day, reaching about 600 cubic metres per second Wednesday morning, still about 30 m3/s below last week’s high. But Thursday morning, the river peaked at just over 560 m3/s before beginning to drop back down.

The B.C. River Forecast Centre’s Wednesday morning update had anticipated that day’s peak would continue to rise, reaching the 10-year return period mark at 655 m3/s around midday Thursday. The forecast centre has not yet posted an updated forecast.

Related: Osoyoos hotel hopes to reopen early June after flooded by lake

On top of the diminished return in the Similkameen, Environment Canada’s data for the Okanagan River near Oliver show a slowly retreating river. The flow in the Okanagan River steady much of the week in the 101 m3/s range before dipping to 100 m3/s on Wednesday and down to 99 on Thursday.

Officials say about 60 per cent of the Okanagan River’s water flow comes from tributaries flowing into the river below Okanagan Lake. And similar data from the Okanagan River after the McIntyre Dam show less of a dip in its flow than in Oliver.

The Western News has put in a request for comment with the Regional District of Okanagan-Similkameen’s emergency operations centre, but has not yet received a response.

Report a typo or send us your tips, photos and video.

Dustin Godfrey | Reporter

@dustinrgodfrey

Send Dustin an email.
Like the Western News on Facebook.
Follow us on Twitter.

Just Posted

Three charities receive generous donation from 100 Men Who Care

The organization meets four times a year to contribute funding to local initiatives

Penticton Vees outshoot West Kelowna Warriors but don’t earn the win

The Penticton Vees (7-5-1) outshot the West Kelowna Warriors (7-7-1) by a… Continue reading

Award-winning singer/songwriter Christina Martin coming to the Penticton

Christina Martin is bringing her unique musical talents to the Dream Café this Saturday.

Okanagan competitors to be featured in arm wrestling documentary

Arm Nation, featuring competitions from Kelowna and Penticton, will air on Oct. 20 on APTN

Prost, raise your glass for Penticton Oktoberfest

The Penticton Lakeside Resort is the new venue for the annual event

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

Legendary marijuana advocate and comedian celebrates cultural milestone at Kelowna event

VOTE: Nature in Focus reader’s choice photo contest

The Penticton Western News Reader’s Choice photo contest

Who’s running in Penticton’s election?

Candidates for the Penticton municipal and school board election

Column: The future we will leave our grandchildren

Richard Cannings is a member of the NDP and the South Okanagan-West Kootenay riding MP

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.

Most Read