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Very little water in the form of lakes, etc in any of those SE WA units. Some small creeks and stuff here and there but not a lot of significant water at all. I've never hunted that specific unit but I've hunted others down there. Deer densities will likely be low also. If you want to make contact with anyone specifically, I might suggest searching the elk forum for that unit. It's a more popular elk area than a deer area.
Thats a hell of a drive from SW Wa. There are some seasonal creeks, but in the fall they would be few and far between. Vertical country. Most of the big deer are all on private property on 181. Some of those draws you would be better off eat the deer vs trying to get it out, horses or not. I have taken 3 out of 181 and done some chuakar hunting there, but that is when I was younger, not a mid aged game for a beer drinker
186 Getz hammered. It's surrounded by about 20 different private landowners. There's is hardly any public land in the unit and gettimg permission for deer hunting just isn't nna happen. Tight knitt group up there. They use to grow a few giants each year but now there whole family's are hunting the prop. Cousins, nephews, brothers, sister, ma, pa, cousins friend, nephews friend. It's the only season they have to hunt.