DirectionsI-84 east from portland and on the old columbia highway just east of multnomah falls.
This hike is more of a swim. Oneonta gorge is a slot canyon with an impressive waterfall at the end. The beauty is the sheer cliff walls seen looming over you the entire way in. The strem spans from canyon wall to canyon wall, and while only ankle deep in most places, it does get up to your waist even in dry seasons so be prepared to get wet.
It lies right next to the freeway yet once you go just a few feet into this gorge you feel like you are in a different world!
Probably the best time of day is around noon when the sun actually slants into the gap high above you. There is also an oneonta trail that takes you up above the canyon but there is no substitute for actually trudging your way up to the hidden pool and waterfall at the end of the canyon.
Makes a great side trip to longer day hikes in the Columbia Gorge.