Middle Peak is a mountain

summit A summit is a point on a surface that is higher in elevation than all points immediately adjacent to it. The topographic terms acme, apex, peak (mountain peak), and zenith are synonymous. The term (mountain top) is generally used only for ...

located in the

North Cascades The North Cascades are a section of the Cascade Range of western North America. They span the border between the Provinces and territories of Canada, Canadian province of British Columbia and the U.S. state of Washington (state), Washington and ...

Whatcom County Whatcom County (, ) is a county located in the northwestern corner of the U.S. state of Washington, bordered by the Lower Mainland (the Metro Vancouver and Fraser Valley Regional Districts) of the Canadian province of British Columbia to t ...

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, United States.

Description

Middle Peak is set one-third mile south of the

Canada–United States border The international border between Canada and the United States is the longest in the world by total length. The boundary (including boundaries in the Great Lakes, Atlantic, and Pacific coasts) is long. The land border has two sections: Canada' ...

near Boundary Monument No. 60. It is within

North Cascades National Park North Cascades National Park is a List of national parks of the United States, national park of the United States in Washington (state), Washington. At more than , it is the largest of the three National Park Service units that comprise the No ...

and

Stephen Mather Wilderness The Stephen Mather Wilderness is a wilderness area honoring Stephen Mather, the first director of the National Park Service. It is located within North Cascades National Park, Lake Chelan National Recreation Area, and Ross Lake National Recr ...

. This sharp peak is situated immediately west of

Hanging Lake Hanging Lake is a lake in the U.S. State of Colorado. It is located in Glenwood Canyon, about east of Glenwood Springs, Colorado and is a popular tourist destination. When open, the lake is reached via a trailhead located along the Glenwood Ca ...

, four miles southwest of the southern tip of

Chilliwack Lake Chilliwack Lake is a lake in the upper basin of the Chilliwack River southeast of the city of the same name in the Lower Mainland of British Columbia, Canada. The lake, while entirely within Canada, is located just north of the border between B ...

, and southeast of

Mount Rexford Mount Rexford is a prominent mountain summit located in the Cascade Mountains of southwestern British Columbia, Canada. It is situated north of the Canada–United States border, west of Chilliwack Lake, and east of Slesse Mountain, which is ...

. The nearest higher neighbor is Mount Lindeman, to the northeast, and

Mount Redoubt Redoubt Volcano, or Mount Redoubt ( Dena'ina: ''Bentuggezh K’enulgheli''), is an active stratovolcano in the largely volcanic Aleutian Range of the U.S. state of Alaska. Located at the head of the Chigmit Mountains subrange in Lake C ...

is to the southeast. Other peaks which can be seen from the summit include

Mount Baker Mount Baker (; ), also known as Koma Kulshan or simply Kulshan, is a active glacier-covered andesitic stratovolcano in the Cascade Volcanic Arc and the North Cascades of Washington State in the United States. Mount Baker has the second-most ...

Mount Shuksan Mount Shuksan is a glaciated massif in the North Cascades National Park. Shuksan rises in Whatcom County, Washington immediately to the east of Mount Baker, and south of the Canada–US border. The mountain's name ''Shuksan'' is derived fr ...

Mount Challenger Mount Challenger is a hill on East Falkland, Falkland Islands.Strange, Ian (1983) ''The Falkland Islands'' It is south of Mount Kent. The area saw some action during the Falklands War The Falklands War () was a ten-week undeclared war bet ...

, Copper Mountain, and many more. Middle Peak is more notable for its steep rise above local terrain than for its absolute elevation.

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 4,000 feet above the Little Chilliwack River in two miles. Precipitation runoff from this mountain drains into the Little Chilliwack and headwaters of Centre Creek which are both tributaries of the

Chilliwack River Chilliwack ( ) is a city of about 100,000 people and in the Canadian province of British Columbia. It is located about east of the City of Vancouver in the Fraser Valley. The enumerated population is 93,203 in the city and 113,767 in the gr ...

History

The

first ascent In mountaineering and climbing, a first ascent (abbreviated to FA in climbing guidebook, guide books), is the first successful documented climb to the top of a mountain or the top of a particular climbing route. Early 20th-century mountaineers a ...

of the peak's 7,160-foot-elevation southwest summit was made July 8, 1859, by surveyor Henry Custer and party during a reconnaissance. The first ascent of Middle Peak was made June 30, 1908, by James J. McArthur, a Canadian surveyor of the

International Boundary Commission The International Boundary Commission () is a bi-national organization responsible for surveying and mapping the Canada–United States border and regulating construction close to the border. The commission was created in 1908 and made permanent ...

Paragliders Paragliding is the recreational and competitive adventure sport of flying paragliders: lightweight, free-flying, foot-launched Glider (aircraft), glider aircraft with no rigid primary structure. The pilot sits in a :wikt:harness, harness or in ...

have lifted off from the summit and landed at the upper end of Chilliwack Lake.

Climate

Middle Peak is located in the

marine west coast An oceanic climate, also known as a marine climate or maritime climate, is the temperate climate sub-type in Köppen classification represented as ''Cfb'', typical of west coasts in higher middle latitudes of continents, generally featuring co ...

climate zone of western North America. 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 originating in the Pacific Ocean travel northeast toward the

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

. As fronts approach the

, 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. Because of maritime influence, snow tends to be wet and heavy, resulting in high

avalanche An avalanche is a rapid flow of snow down a Grade (slope), slope, such as a hill or mountain. Avalanches can be triggered spontaneously, by factors such as increased precipitation or snowpack weakening, or by external means such as humans, othe ...

danger. 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. Due to its temperate climate and proximity to the Pacific Ocean, areas west of the Cascade Crest very rarely experience temperatures below or above . This climate supports small glacial remnants on the north slope above Hanging Lake. The months July through September offer the most favorable weather for viewing or climbing this peak.

Geology

The North Cascades feature some of the most rugged topography in 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 ...

with craggy peaks, ridges, and deep

glacial valley U-shaped valleys, also called trough valleys or glacial troughs, are formed by the process of glaciation. They are characteristic of mountain glaciation in particular. They have a characteristic U shape in cross-section, with steep, straight s ...

s. Geological events occurring many years ago created the diverse topography and drastic elevation changes over the Cascade Range leading to various climate differences. The history of the formation of the Cascade Mountains dates back millions of years ago to the late

Eocene The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes ...

Epoch. With the North American Plate overriding the Pacific Plate, episodes of volcanic igneous activity persisted. In addition, small fragments of the

oceanic Oceanic may refer to: *Of or relating to the ocean *Of or relating to Oceania **Oceanic climate **Oceanic languages **Oceanic person or people, also called "Pacific Islander(s)" Places * Oceanic, British Columbia, a settlement on Smith Island, ...

and

continental lithosphere A lithosphere () is the rigid, outermost rocky shell of a terrestrial planet or natural satellite. On Earth, it is composed of the crust and the lithospheric mantle, the topmost portion of the upper mantle that behaves elastically on time sc ...

called

terrane In geology, a terrane (; in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or " sutured" to crust lying on another plate. The crustal block or fragment preserves its d ...

s created the

about 50 million years ago. During the

Pleistocene The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fin ...

period dating back over two million years ago, glaciation advancing and retreating repeatedly scoured the landscape leaving deposits of rock debris. The U-shaped cross section of the river valleys is a result of recent glaciation. Uplift and faulting in combination with glaciation have been the dominant processes which have created the tall peaks and deep valleys of the North Cascades area.

Gallery

File:Middle mtn.jpg, South aspect

References

External links

* Middle Peak
Weather Forecast

National Geodetic Survey datasheet
National Park Service {{Geographic Location 2 , Center = Middle Peak , North =

, Northeast = Mount Lindeman , East =

, ESE = Nodoubt Peak , Southeast =

, South = Copper Mountain , Southwest = Silesia Ridge , West = Pocket Peak , Northwest =

Mountains of Whatcom County, Washington North Cascades National Park North Cascades of Washington (state) Two-thousanders of the United States