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A Portland engineer used surveying methods from a Portland baseline and calculated a height of between 18,000 and 19,000 ft (5,500 and 5,800 m). Many maps distributed in the late 19th century cited 18,361 ft (5,596 m), though Mitchell's School Atlas gave 14,000 ft (4,300 m) as the correct value.
The summit of a mountain or hill may be measured in three principal ways: The topographic elevation of a summit measures the height of the summit above a geodetic sea level . [ 2 ] [ 3 ] The first table below ranks the 30 highest major summits of Oregon by elevation.
The Tualatin Mountains (also known as the West Hills or Southwest Hills of Portland) are a range on the western border of Multnomah County, Oregon, United States. [1] A spur of the Northern Oregon Coast Range, they separate the Tualatin Basin of Washington County, Oregon, from the Portland Basin of western Multnomah County and Clark County, Washington.
There are at least 319 mountain passes in the U. S. state of Oregon. Lolo Pass seen from west of the pass. The Pacific Crest Trail traverses left and right across the pass; Mount Hood 's northwest face is visible in the background.
It is not usually visible from the city of Portland, [6] though it is visible on clear days from Salem and can be noticed from highways to both the east and the west of the Cascade Range. [8] The average elevation of the terrain around Jefferson is 5,500 to 6,500 feet (1,700 to 2,000 m), meaning that Jefferson's cone rises nearly 1 mile (1.6 km ...
[4] [5] (If floodwaters of that magnitude covered Portland (elevation 20 ft or 6.1 m) in 2010, only the tops of the West Hills, Mount Tabor, Rocky Butte, Kelley Butte and Mount Scott would be visible, [5] as would only some of the city's tallest skyscrapers.)
The Blue Mountains are a mountain range in the northwestern United States, located largely in northeastern Oregon and stretching into extreme southeastern Washington. The range has an area of about 15,000 square miles (39,000 km 2 ), stretching east and southeast of Pendleton, Oregon , to the Snake River along the Oregon– Idaho border.
The Calapooya Mountains in Lane County Mount Thielsen in the Cascade Range in southern Oregon The Pueblo Mountains south of Fields Trout Creek Mountains, Southeastern Oregon The Wallowa Mountains in northeastern Oregon. There are at least 50 named mountain ranges in the U.S. state of Oregon.