Both the Indian Dan and Soap Lake are wildlife areas owned by the state. The Indian Dan has a bit more difficult terrain, but there are quite a bit of flats there, as well. If you go there, be careful about running across sharptails...you can' t shoot them in Washington. You should also encounter huns, which are fair game.

If you really want to be assured of getting into some quail, I' d try the Colville Res. There are tons of quail there, and you won' t run into too many other hunters.

There is also a bunch of quail on the Yakima and Toppenish Reservations, but those are farther west and will have more pressure because there are also quite a few pheasants on those areas.

The best places to hunt quail in the state are unfortunately the areas where no one wants to go: I.E. the areas that are so rugged, steep and remote that sane people rightfully stay away from them. Areas such as the Quilomene are far more brutal than most can imagine, and many hunters lose their dogs, rigs, even their lives there every year. If you decide to go to such a place, make sure you do so with someone who knows the area intimately, that way if disaster strikes they can at least give you a fighting chance to make it out on foot.