Yep, what Mike & Michigan T both said.
The Alsea is ONLY open right now for 'Nooks, trout and bluebacks (sea run cutts). However, Sunday is the last day for any trout / blueback fishing.
And any of the pockets below 5 Rivers hold fish.
It's also a good idea to clearly know the difference between 'Ho's and 'Nooks, before you head out. There is an I.D. chart on the ODFW site.
Good luck.