This is likely my favourite park. http://www.env.gov.bc.ca/bcparks/exp...birkenhead_lk/
The lake and mountains are amazing and the sites are so private we couldn't see any of our neighbours from our site. Downside is no services, lake is glacier fed and ice cold and the last 17 km up the road is rough.
This is my favourite close park. http://www.cultuslake.bc.ca/eat-play-at-cultus/
Kinda crowded especially on long weekends but the lake is warm , it's an hour from my house and I have lots of friends there every summer.