The Atiyeh Deschutes River Trail at river level is a favorite jaunt for hikers on hot summer days. You just can't beat the cool river and the shade of white alder trees (and while you're resting, look for the hanging basket-type nests built by the orioles).
Off Hwy 206, 17 miles E of The Dalles. Eastbound on I-84, take Exit 97. Westbound, use Exit 104 at Biggs Junction. Follow the signs on Hwy 206 to reach the park.
http://www.tripleblaze.com/trail.php?c=3&i=5196