HUH ...I thought it was illegal to fish for Steelhead and Salmon at night ...State wide !! 
it is in oregon, but it's on a case by case basis here. most rivers are open to it until around august, and then after november, mainly due to night time snagging issues during salmon season. they're all open at night unless otherwise stated in the regs.
i used to love fishing the kalama down at beginners hole for steelhead this time of year, get off work at 2, be on the river by 3, and be heading home with limits by 4:30. the local hicks with their treble hooks ruined that one, it's got a night closure now.