Keywords: forest natural resources naturalresources opal creek wilderness opalcreekwilderness oregon river three pools recreation area threepoolsrecreationarea watershed willamette national forest willamettenationalforest willamette nf willamettenf united states unitedstates usa willamette national forests nationalforests national forest nationalforest us forest service usforestservice pacific northwest pacificnorthwest wilderness outdoor tree plant View of Interpretive Signs and Trail in the Three Pools Recreation Area by the Opal Creek Wilderness on the Willamette National Forest in Oregon View of Interpretive Signs and Trail in the Three Pools Recreation Area by the Opal Creek Wilderness on the Willamette National Forest in Oregon |