Welcome to BC Ragen. There are a ton of lakes in the region. Try going to your local tackle shops and asking them for advice. They will be more than happy to not only point you toi some productive water, but sell you flies that will be useful at the time of year your asking about. Purchase the Backroads mapbook III (Kamloops/Okanagan) and do some exploring (both on paper and on road). Another good resource is BC lake Fishing by Karl Bruhn. I'd recommend the lakes up on the connector (Hwy 97c) as this time of year the higher elevation lakes will be more productive.