Browse Map

Explore away

Explore Map Collection

Check out our basemaps

Print a Map Plus

Generate a high-quality PDF

Field Guide

Discover local flora, fauna, geology, and more

Local Flora & Fauna

Learn the ecology of your area

Local Geology

Learn the geologic formation at your feet

Get Started or Sign In

Welcome

Continue with Apple

Already have an account? Sign In

MAP

Topo

Measure

Topo

Ecoregions

Public Lands

...

BASEMAPS

Default Weather

Temperature

Smoke

...

WEATHER

Mount Jefferson

Second Highest Mountain in Oregon

Stratovolcano in Willamette NF, Mount Jefferson Wilderness, Cascade Range near Marion Forks, OR

Print Map

Generate High-Quality PDF

On the Web

On Wikipedia

Mount Jefferson is a stratovolcano in the Cascade Volcanic Arc, part of the Cascade Range, and is the second highest mountain in Oregon. It is situated in the far northeastern corner of Linn County on the Jefferson County line, with the lower reaches extending northward into southeastern Marion County. The mountain, about 105 miles (169 km) east of Corvallis, is federally protected as part of the Mount Jefferson Wilderness. Due to the rugged area, the mountain is one of the hardest volcanoes to reach in the Cascades, though USFS Road 2243 does come within 4 miles (6.4 km) of the summit. Jefferson's craggy and very glacially scarred appearance makes it especially photogenic.

Classified As

Stratovolcano

Geologic Formation

Mafic vent complexes (ORQTmv;0)

Geologic Formation