Yeah, I’m ready 
Cranked the nearby airport METAR into WD to get a feel for it.
Sunrise Lake is in the Brookswood area of Langley, BC., about 30 miles east of Vancouver.
It’s actually a gravel pit that was developed years ago and is filled with normal ground-water. Hence the up/down with heavy rains, spring/summer variations etc. And since it’s not a public waterway it’s only known by name to the locals.
The site is still a work-in-progress.