Mount Sylvania

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Mount Sylvania
Mount Sylvania in Portland Oregon.JPG
Top as seen from Tualatin
Highest point
Elevation 978 ft (298 m)  NAVD 88[1]
Prominence 510 ft (155 m) [2]
Coordinates 45°26′17″N 122°43′18″W / 45.438174217°N 122.72164825°W / 45.438174217; -122.72164825Coordinates: 45°26′17″N 122°43′18″W / 45.438174217°N 122.72164825°W / 45.438174217; -122.72164825[1]
Location Multnomah County, Oregon, U.S.
Parent range Tualatin Mountains
Topo map USGS Lake Oswego
Mountain type Shield volcano[3]
Volcanic field Boring Lava Field

Mount Sylvania is an extinct volcano, part of the Boring Lava Field, on the outskirts of Portland, Oregon. Parts of the mountain are within the cities of Portland, Lake Oswego, and Tigard. Mountain Park, a Lake Oswego suburban development, was built on the mountain in the 1970s.

The Sylvania campus of Portland Community College is located on the mountain's western slopes.


  1. ^ a b "Sylvania Reset". NGS data sheet. U.S. National Geodetic Survey. Retrieved 2008-11-17. 
  2. ^ "Mount Sylvania, Oregon". Retrieved 2016-04-27. 
  3. ^ "The Boring Lava Field, Portland, Oregon". USGS: Cascades Volcano Observatory. Archived from the original on 2011-07-01. Retrieved 2008-04-01. 

External links[edit]