PORTLAND, Ore. — The John Day River stretches 147 miles through eastern Oregon. It is the longest undammed river in the state. At the mouth of the John Day River, where it meets the Columbia ...

The park ranger said that the bottom of the John Day River Canyon, the location of Cottonwood Canyon State Park, is typically 5 to 10 degrees hotter than at The Dalles. I looked at a BLM map for ...