Ok, If this is the Blue lake east of portland out of fairview, It is legal to fish for trout in there YEAR round The general trout regulations that state a season such as may 22 to oct 31 for example... is for rivers, streams, creeks. There is a seperate listing for lakes/reservoirs included which state they are open year round in the willamette zone, I further do not see blue lake listed in the special regulations for the willamette zone,
There for the general rules apply, These are,
Angling restricted to artificial flies and lures in streams; See exceptions under Special Regulations
8 inch minimum length
Only 1 trout over 20 inches in length may be taken per day.
Rainbow trout over 20 inches are considered steelhead in streams.
Closed to angling for bull trout
Kokanee included in trout limits except as noted under Special Regulations[/B
In lakes there is a limit of 5 trout per day 2 daily limits in possession
Streams are catch and release only except under Special Regulations
This should clear up ANYTHING about the legality of fishing blue lake right now for trout, given that this is the blue lake near fairview