u/felixfelix answered this. I edited his comment to add punctuation.
I think it's Okanagan Lake, viewed from Summerhill Pyramid Winery, Kelowna.
Here is another similar view. Another photo from Summerhill.
It's the old floating bridge in the background, as the current one was completed in 2008. The photo was taken in 2000.
Looking at the map, the end of the bridge lines up with that jetty of land in the foreground like this.