Thanks for posting those estimated fish/mile. The data that I found a few years back indicated fewer fish/mile than you found. I do believe that the data I had was from the mid 90's. That data indicated around 800 fish/mile of the same size you indicated in the Ellensburg area. So, it looks like the fish/mile may be increasing which I think is evident in the quality of the fishery. I definitely think the average size had increased over the last 10 year as well.
The Yak is getting to be a quality fishery. Definitely the best we have to offer here as far as a non-anadromous fishery goes. The Yak is a tough river to figure and in my experience, if you can catch fish day in and day out on the Yak, you are pretty well suited to catch fish on any western river.
However, if I had a week to go fishing on a trout stream within the northwest/west states (ID, MT, WY, OR), I probably would not spend it on the Yakima.
