Weird I've never heard of them planting landlocked Coho before, but it's true they put em in there! Probably had some extra smolts lying around so they tossed em in there? So do they have Coho and Kokes, or just the Coho? Personally I'm not a big Koke fisherman, it was fun when they were a little bigger on avearge. Used to fish Paulina for them all the time when used to average 13-15 inches. Now a lot of places seem to be overpopulated with 8-10 inch fish. I'm not gonna go half way across the state for 8-10 inch fish. Quantity over quality is not one of my favorite tactics. IMO Kokanee have been grossly mismanaged in OR, hopefully these Coho will be a better fit.
This is from ODFW Recreation Report
GALESVILLE RESERVIOR: rainbow trout, bass
Galesville Reservoir is open to angling year-round. The reservoir was recently stocked with about 5,000 adipose-clipped hatchery coho that should be catchable size this summer. In Galesville Reservoir, all landlocked salmon are considered trout. Thus, there is a five per day trout limit, with only one trout over 20 inches in length allowed for harvest. Last year’s coho which are 12 – 14 inches long have been biting recently. About 8,000 trout were stocked in 2009, and stocking for 2010 has begun with about 3,000 trout so far. Anglers are reminded all bass between 12 and 15 inches must be released, and only one bass over 15 inches may be taken per day. Galesville now has a campground. Call 541-837-3302 for information on camping and boat launching conditions.