Wallowa County in northeast Oregon is home to some packrafting gems. We floated one of them last weekend: the Wenaha River in the Wenaha-Tucannon Wilderness.
The river is fun class II with an occasional II+ boulder garden and currently requires something like 6 to 8 portages around wood. Five mile hike to the put-in; 21 mile float out to cold Terminal Gravity at the Shilo Resort Cafe in Troy, Oregon.
The Wenaha provides habitat for a bull trout population that rivals that of the SF Flathead, and boasts native runs of Chinook salmon and steelhead.
Photos here: http://www.facebook.com/media/set/?set=a.244072778947872.61012.100000354551024