Multnomah County topographic maps

Solidified lava from Grande Ronde members of the Columbia River Basalt Group underlie Forest Park. About 16 million years ago during the Middle Miocene, the Columbia River ran through a lowland south of its modern channel. Eruptions from linear vents in eastern Oregon and Washington flowed down this channel…

Average elevation: 299 ft

Average elevation: 604 ft

Powell Butte is located in Multnomah County in the U.S. state of Oregon. According to the U.S. National Geodetic Survey, the butte reaches an elevation of 614 feet (187 m), while the Geographic Names Information System lists the mountain's elevation at 627 feet (191 m). J.E. Allen, an emeritus professor of…

Average elevation: 344 ft

Average elevation: 548 ft

Average elevation: 3,287 ft

Average elevation: 965 ft

Average elevation: 1,234 ft

Average elevation: 909 ft

Average elevation: 46 ft

Average elevation: 335 ft

Average elevation: 171 ft

Average elevation: 715 ft

Average elevation: 52 ft

Average elevation: 282 ft

Average elevation: 177 ft

Average elevation: 108 ft

Average elevation: 187 ft

Average elevation: 141 ft

Average elevation: 141 ft

Average elevation: 469 ft

Average elevation: 358 ft

Average elevation: 873 ft

Average elevation: 220 ft

Average elevation: 390 ft

Average elevation: 341 ft

Average elevation: 499 ft

Average elevation: 131 ft

Average elevation: 292 ft

Average elevation: 200 ft

Average elevation: 180 ft

Average elevation: 282 ft

Average elevation: 423 ft