Located within Sinlahekin Wildlife Area, Blue Lake fishes best in May and June and then again in September and October. During the hotter summer months, use weighted lines to troll deeper parts of the lake. WDFW access site with camping, toilets, and gravel boat launches. Expect two age classes of rainbow, yearling fish 10-12 inches and holdovers in the 13-15 inch range. Browns up to 18 inches can also be expected.