Mount Jefferson
Mount Jefferson rises to 3,201 m in Oregon. Olallie Butte stands 2,195 m to the north, 10 miles off. The nearest named place is Goat Peak, a peak 2.2 miles away. West Cascades passes 7.3 miles off.
The story
Mount Jefferson is a stratovolcano in the Cascade Volcanic Arc, part of the Cascade Range in the U.S. state of Oregon. The second highest mountain in Oregon, it is situated within Linn County, Jefferson County, and Marion County and forms part of the Mount Jefferson Wilderness. Due to the ruggedness of its surroundings, the mountain is one of the hardest volcanoes to reach in the Cascades. It is also a popular tourist destination despite its remoteness, with recreational activities including hiking, backpacking, mountaineering, and photography. Vegetation at Mount Jefferson is dominated by Douglas fir, silver fir, mountain hemlock, ponderosa pine, lodgepole pine, and several cedar species. Carnivores, insectivores, bats, rodents, deer, birds, and various other species inhabit the area. Also known as Seekseekqua by Native American populations, the volcano was named after United States President Thomas Jefferson, and was first ascended by E. C. Cross and R. L. Farmer in 1888. It sits atop an area of crustal melting, and was produced by the subduction of the oceanic Juan de Fuca tectonic plate under the continental North American tectonic plate, forming about 730,000 years ago. Consisting of basaltic andesite, andesite, and dacite, the mountain has been extensively altered by glacial erosion. The surrounding area contains a number of other volcanic features like cinder cones, shield volcanoes, and tuyas (flat-topped, steep-sided volcanoes formed when lava erupts through a thick glacier or ice sheet). It is considered a low threat by the United States Geological Survey. Despite the low chance of future eruptions, many scientists still consider mudflows a major threat at Mount Jefferson.
From Wikipedia, CC BY-SA 4.0.
Wikidata Q772492, referenced by the OpenStreetMap record.
What the record says
- Elevation
- 3201 m
How to reach it
- 7.3 mi off the West Cascades, National
- 17.2 mi off the McKenzie Pass-Santiam Pass, National
- 20.1 mi off the Over the Rivers and Through the Woods
Overlooks nearby
- Mount Washington Overlook · 18 mi
- Glen Thomas Site · 23 mi
- Sahalie Falls Viewpoint · 25 mi
- Koosah Falls Viewpoint · 25 mi
Named places within 25 miles
- Goat Peak: 2.2 mi
- Sentinel Hills: 3.2 mi
- Park Butte: 3.2 mi
- The Table: 3.2 mi
- Grizzly Peak: 3.4 mi
- Ann Arbor Hot Springs: 11.5 mi
- Wizard Falls Springs: 13.4 mi
- Head of Jack Creek: 14.1 mi
- Bear Spring: 16.2 mi
- Cold Springs: 16.9 mi
- Breitenbush Hot Springs Parking: 11.3 mi
- Cold springs resort: 16.7 mi
- Clear Lake Resort: 22.9 mi
- Crockett Lodge: 22.9 mi
- Phantom Natural Bridge: 23.1 mi
- Marten Buttes Falls: 20.6 mi
- Tumble Falls: 21.3 mi
- Flume Creek Falls: 22.9 mi
- Sawmill Falls: 24.4 mi
- Sahalie Falls: 24.5 mi
- Lost Lake Day Use Area: 17.3 mi
- Detroit Flats Day Use Area: 17.5 mi
- Upper Arm Day Use Area: 17.6 mi
- Clear Lake Day Use Area: 23.0 mi
- Wizard Falls Fish Hatchery: 13.3 mi
- Elliot R Corbett II Memorial State Park: 18.3 mi
- Ray Benson Sno-Park: 18.8 mi
- Blowout Cliff: 17.8 mi
- Big Canyon Rim: 23.2 mi
- Palisades: 24.8 mi
- Jawbone Flats: 23.4 mi
- Geneva: 24.4 mi
- Alder Spring Lookout: 12.5 mi
- Hackleman Old-Growth Grove: 24.0 mi
Other summits around it
The highest named summits within 12.9 miles of Mount Jefferson. Elevation from each summit’s own record; bearing measured between the two coordinates.
| Summit | Bearing | Elevation | Distance |
|---|---|---|---|
| Olallie Butte | N 10° | 2,195 m | 10.3 mi |
| Goat Peak | S 179° | 2,182.1 m | 2.2 mi |
| Park Butte | N 354° | 2,088 m | 3.2 mi |
| South Cinder Peak | S 183° | 2,056 m | 7.3 mi |
| North Cinder Peak | S 181° | 2,050 m | 4.9 mi |
| Porcupine Rock | S 190° | 2,012.9 m | 12.9 mi |
| Rockpile Mountain | S 182° | 1,991 m | 8.5 mi |
| Bald Peter | ESE 104° | 1,980 m | 5.4 mi |
When to go
Light through the year
| Date | Sunrise | Golden hour | Sunset |
|---|---|---|---|
| March equinox | 07:11 | 18:41 | 19:20 |
| June solstice | 05:23 | 20:12 | 20:57 |
| September equinox | 06:55 | 18:28 | 19:06 |
| December solstice | 07:42 | 15:42 | 16:30 |
Local time (America/Los_Angeles).
Climate normals
Months averaging 50–80 °F: May–Sep.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °F | 33 | 36 | 39 | 44 | 51 | 57 | 64 | 64 | 58 | 48 | 38 | 33 |
| Precip in | 11.3 | 7.8 | 8.6 | 6.3 | 4.4 | 2.9 | 0.7 | 0.7 | 2.2 | 6.1 | 10.7 | 12.4 |
1991–2020 U.S. Climate Normals, NOAA NCEI — Marion Forks Fish Hatchery, 9 mi away.
Where this comes from
Location and category confirmed against OpenStreetMap.
OpenStreetMapWikipediaWikidata- USGS Geographic Names Information System feature 1144246 — Mount Jefferson, Jefferson County, Oregon.
OpenStreetMap element node/357311157
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