From HWY 84 take exit 64 to the junction of HWYs 30 and 35 (the China Gorge restaurant is a great landmark at this intersection). Take HWY 35 south. The turn off for Tamanawas Falls is on your right, about 1.5 miles south of Polallie Creek campground. If you reach the Sherwood campground you have gone too far.
To take a trip into the wilds of the eastside of Mount Hood that is truly a highlight of the Mount Hood Loop, scoot off HWY 35 to visit Tamanawas Falls. This 100 ft waterfall is less known than its rivals in the Gorge, but is equally as breathtaking. Besides delighting in this beautiful waterfall, hikes in this area take you through lush vegetation and critical wildlife habitat. The water that spills over Tamanawas Falls is from Cold Spring Creek; a clear, cold creek that is a tributary to the proposed Wild and Scenic East Fork Hood River. This area, which includes nearby scenic Polallie Creek, hosts winter and summer steelhead runs. In addition, these cold waters help keep the East Fork of the Hood River cool for the river's threatened Coho salmon.