Tahtlum Peak is a mountain summit in

Yakima County Yakima County is a County (United States), county in the U.S. state of Washington (state), Washington. As of the 2020 United States census, 2020 census, its population was 256,728. The county seat and most populous city is Yakima, Washington, Ya ...

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

state.

Description

Tahtlum Peak is located east-southeast of

Chinook Pass Chinook Pass (elevation 5430 ft./1656 m.) is a pass through the Cascade Range in the state of Washington. The pass is located on the crest of the Cascade Range, along a ridge between Yakima Peak to the northwest of the pass, and Naches Pe ...

and north of Dewey Lake in the

William O. Douglas Wilderness The William O. Douglas Wilderness is a designated wilderness in Central Washington. It includes located between the U.S. Route 12 and State Route 410 and is jointly administered by the Okanogan-Wenatchee National Forest and the Gifford P ...

. It is part of the

Cascade Range The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington (state), Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as m ...

and the nearest higher neighbor is Dewey Peak, to the south. Precipitation runoff from Tahtlum Peak drains into the

American River The American River is a List of rivers of California, river in California that runs from the Sierra Nevada (U.S.), Sierra Nevada mountain range to its confluence with the Sacramento River in downtown Sacramento. Via the Sacramento River, it ...

Topographic relief Terrain (), alternatively relief or topographical relief, is the dimension and shape of a given surface of land. In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientati ...

is significant as the summit rises above Dewey Lake in less than and above American River in . The name ''tahtlum'' derives from

Chinook Jargon Chinook Jargon (' or ', also known simply as ''Chinook'' or ''Jargon'') is a language originating as a pidgin language, pidgin trade language in the Pacific Northwest. It spread during the 19th century from the lower Columbia River, first to othe ...

which means "ten." The mountain's toponym has not been officially adopted by the U.S. Board on Geographic Names, and it will remain unofficial as long as the USGS policy of not adopting new toponyms in designated wilderness areas remains in effect.

Climate

Most

weather front A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary. For ins ...

s originate in the Pacific Ocean, and travel east toward the Cascade Mountains. As fronts approach, they are forced upward by the peaks of the Cascade Range (

orographic lift Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and cr ...

), causing them to drop their moisture in the form of rain or snowfall onto the Cascades. As a result, the west side of the North Cascades experiences high precipitation, especially during the winter months in the form of snowfall. During winter months, weather is usually cloudy, but due to high pressure systems over the Pacific Ocean that intensify during summer months, there is often little or no cloud cover during the summer.Beckey, Fred W. Cascade Alpine Guide, Climbing and High Routes. Seattle, WA: Mountaineers Books, 2008.

Gallery

File:Tahtlum Peak, west aspect.jpg, West aspect File:Tahtlum Peak refected in Dewey Lake.jpg, Tahtlum Peak reflected in Dewey Lake File:Tahtlum Peak WA.jpg File:Tahtlum Peak, Yakima County, WA.jpg File:Tahtlum Peak.jpg, Approaching Tahtlum Peak from west

References

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External links

* National Forest Service web site
William O Douglas Wilderness
Cascade Range Mountains of Washington (state) Mountains of Yakima County, Washington Chinook Jargon place names Two-thousanders of the United States