YAKIMA is in great shape. Low and clear. Honestly, I could give you a huge list of flies but that would be just to sell flies. Really, you can pare the list down substantially in the Winter:
Nymphs
1) #8-12 Pats stones and Skwala nymphs
2) #8-12 San Juan Worm
3) #6 Millimeter Whitefish Egg
4) #2-8 Streamers Sparkle Minnow, Sculpzilla, Seal Bugger, Sex Dungeons
Occasionally there can be a good midge hatch. Utilizing a #18 Cluster pattern or a #20 single Parachute presented correctly will usually suffice,
The fishing has been quite good recently and from now until April some of the biggest fish are caught on the Yakima. Great time to be on the river. Focus your time during the warmth of the day. 11AM to 4PM
Although I wrote this blurb a long time ago, it still holds true. Check it out
________________________________________________