Larch Mountain topographic map
Interactive map
Click on the map to display elevation.
About this map
Name: Larch Mountain topographic map, elevation, terrain.
Location: Larch Mountain, Multnomah County, Oregon, United States (45.53090 -122.09041 45.53100 -122.09031)
Average elevation: 3,287 ft
Minimum elevation: 2,625 ft
Maximum elevation: 3,957 ft
Multnomah County trails, hiking, mountain biking, running and outdoor activities
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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
