Thank you for supporting this site ❤️
Make a donation
Make a donation
Gear up for your next adventure:
As an Amazon Associate, this site earns from qualifying purchases at no extra cost to you.
Portland topographic maps
Click on a map to view its topography, its elevation and its terrain.
Forest Park
United States > Oregon > Multnomah County > Portland
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