They are chinook. For years the Professor, I believe from the UW...? Has been planting them, he lives on the NW side of the lake by the golf course. I used to fish that lake every week when I lived less than a block away. Also the South East side of the lake has an outlet stream that does go to Lake Wa.??? So, I have even heard of a few adults found at the ck outlet, this was years ago! As now I believe the stream is impassable...Great little urban lake!