Mount Hood
| Mount Hood | |||
|---|---|---|---|
 Mount Hood reflected in Trillium Lake | |||
| Elevation | 11,249 feet (3,429 meters) | ||
| Location | Oregon, USA | ||
| Mountain range | Cascade Range | ||
| Prominence | 7,706 ft (2,349 m)[1] | ||
| Geographic coordinates | {{#invoke:Coordinates|coord}}{{#coordinates:45|22|24.65|N|121|41|45.31|W|type:mountain_region:US | name=
}} | |
| Topographic map | USGS Mount Hood South 45121-C6 | ||
| Type | Stratovolcano | ||
| Geologic time scale | < 500,000 years[2] | ||
| Last eruption | 1790s[2] | ||
| First ascent | 1857-07-11 by Henry Pittock, W. Lymen Chittenden, Wilbur Cornell, and the Rev. T.A. Wood[3] | ||
| Easiest Climbing route | Rock and glacier climb | ||
Mount Hood (called Wy'east by the Multnomah tribe), is a stratovolcano in the Cascade Volcanoes Arc in northern Oregon, in the Pacific Northwest region of the United States. It is located about 50 miles (80 km) east-southeast of the city of Portland, Oregon, on the border between Clackamas County, Oregon and Hood River County.
Mount Hood's snow-covered peak rises 11,249 ft (3,429 meters) and is home to twelve glaciers. It is the highest mountain in Oregon and the fourth-highest in the Cascade Range. Mount Hood is considered the most likely of the Oregon volcanos to erupt.[4] Although, based on its history, an explosive eruption is unlikely. Still, the odds of an eruption in the next 30 years are estimated at between 3 and 7 percent.[5] The USGS characterizes it as "potentially active".[6] The mountain is sometimes informally described as "dormant" ("asleep").
Timberline Lodge is a National Historic Landmark located on the southern flank of Mount Hood just below Palmer Glacier. The mountain has six ski areas: Timberline, Mount Hood Meadows, Ski Bowl, Cooper Spur, Snow Bunny and Summit. They total over 4,600 acres (7.2 mi², 18.6 km²) of ski-able terrain; Timberline offers the only year-round lift-served skiing in North America. Mount Hood is part of the Mount Hood National Forest, which has 1.2 million acres (4,900 km²), four designated wilderness areas, and more than 1,200 mi (1,900 km) of hiking trails.
Origin of its name
The mountain was given its present name on October 29, 1792 by Lt. William Broughton, a member of Captain George Vancouver's discovery expedition. It was named after a British admiral, Samuel Hood.
The Multnomah tribe name for Mount Hood is Wy'east. Legend has it that the name Wy'east comes from a chief of the Multnomah tribe, the tribe after which Multnomah County was named. The chief competed for the attention of a woman who was also loved by the chief of the Klickitat Tribe. The anger that the competition generated led to their transformations into volcanoes, with the Klickitat chief becoming nearby Mount Adams (Washington) and the target of their affection becoming Mount St. Helens. Their battle was said to have destroyed the Bridge of the Gods, a 200 feet high landslide that crossed the Columbia River around 300 years ago, and thus created the Great Cascades of the Columbia River.[7]
Geology
Mount Hood is estimated to be more than 500,000 years old. About 100,000 years ago there was a major eruption that scientists have identified. During this eruption, the North flank collapsed, leveling part of the mountains peak. As the laher moved north down the Columbia River in the Hood River Valley area, it carried with it sediment more that 400 ft. deep. The debris left a large creivice that was later filled with lava.
The eroded volcano has had at least four major eruptive periods during the past 15,000 years. The last three occurred within the past 1,800 years. 1,500 years ago, vents high on the southwest flank produced deposits, including some 8 ft. in diameter boulders, that were distributed primarily to the south and west along the Sandy River and Zigzag Rivers. During this eruption, a debris avalanche formed the amphitheater around Crater Rock near the summit which is still visible today.[8].
The last eruptive period took place around 225 years ago, in about 1781-1782. This episode ended shortly before the arrival of Lewis and Clark in 1805.
Now, the glacially eroded summit area consists of several andesitic or dacitic lava domes. These domes formed when the slow moving lava flow piled up over the vents. This piling up can eventually cause more dangerous, pyroclastic flows. The "domes" on Hood, sometimes several hundred feet high, can cause Pleistocene collapses, producing avalanches and lahars (rapidly moving mudflows).
In 1980, a lahar, caused by severe rainstorms, resulted in one death, destroyed a park, three bridges and 5 miles of highway.
The most recent minor eruptive event occurred in August 1907. [9] Since 1950, there have been several earthquake swarms each year at Mount Hood, most notably in July 1980, and June 2002. [1][2]. Subduction of the Juan de Fuca Plate under the North American Plate controls the distribution of these earthquakes and volcanoes in the Pacific Northwest.
There are twelve glaciers on the mountain's upper slopes; these may be a source of potentially dangerous lahars if the mountain should erupt.
Scientists say that Mount Hood will erupt again. Seismic activity is monitored by the USGS Cascades Volcano Observatory located in Vancouver, Washington, which issues daily updates[10]. The USGS, monitoring the active volcano, have recorded 1-4 small earthquake swarms lasting 2-6 days every year. Some of the activites that the geologists watch for as impending threats are increases in temperature near the surface, more seismic activity than usual, and a greater concentration of noxious fumes from the fumaroles.
Glaciers
Mount Hood is host to twelve named glaciers, the most visited of which is Palmer Glacier. This glacier is part of the Timberline Lodge ski area, a popular climbing route. The glaciers are almost exclusively above the 6,000 foot level, which also is about the level of the average tree line on Mount Hood.
The surface area of the glaciers totals about 145 million square feet (5.2 square miles) and contains a volume of about 12.3 billion cubic feet (0.084 cubic miles). Eliot Glacier is the largest by volume at 3.2 billion cubic feet, and has the thickest depth measured by ice radar at 361 feet. The largest surface area is the Coe-Ladd Glacier system at 23.1 million square feet.
| Glacier name | Area[11] millions of ft² |
Volume[11] billions of ft³ |
notes | GNIS location[12] |
|---|---|---|---|---|
| Palmer | 1.4 | 0.07 | upper slopes of the south side,feeds the White River | |
| Coalman (or "Coleman") | 0.9 | 0.04 | located between Crater Rock and the summit, drains into White River | |
| White River | 5.8 | 0.3 | feeds the White River | |
| Newton Clark | 21.4 | 1.4 | source of the East Fork Hood River | |
| Eliot | 18.1 | 3.2 | source of Tilly Jane Creek and Eliot Branch, tributaries of Middle Fork Hood River | |
| Langille | 4.3 | 0.3 | in Hood River watershed | |
| Coe | 13.4 | 1.9 | source of Coe Branch, a tributary of Middle Fork Hood River | |
| Ladd | 9.7 | 0.9 | source of McGee Creek, a tributary of West Fork Hood River | |
| Glisan | ||||
| Sandy | 12.8 | 0.08 | feeds Muddy Fork, a tributary of the Sandy River | |
| Reid | 8.1 | 0.6 | feeds the Sandy River | |
| Zigzag | 8.3 | 0.6 | feeds the Zigzag River | |
| (total) | 145.1 | 12.3 | ||
Climbing Hazards
There is some debate as to when the summit was first reached: either in 1845 or 1857. Since those early days, hundreds of thousands have scaled Oregon's highest peak (11,249 ft./3,429 meters)[1]
Today, Mt. Hood is the most frequently climbed glaciated peak in North America.
There are treacherous conditions involved in the climb with more than 130 people loosing their lives in climbing-related accidents since records have been kept on Mount Hood.[13]
Its status as Oregon's highest point, a prominent landmark visible up to a hundred miles away, convenient access, and relative lack of technical climbing challenges lure many to climb Mount Hood.
About 10,000 people attempt to climb each year.[14] Seduced by gentle wind and warm air at access points, many are surprised to encounter 60 °F temperature drops in less than an hour, sudden sustained winds of 60 mph and more, and visibility quickly dropping from hundreds of miles to an arm's length. This pattern is responsible for the most well known incidents of May 1986 and December 2006. One of the worst U.S. climbing accidents occurred in May 1986 when seven students and two faculty of the Oregon Episcopal School froze to death during an annual school climb. The accident in December of 2006 involved three very experienced climbers.[13][15] Cascade Range weather patterns are unfamiliar to many, even nearby residents. The two major causes of climbing deaths on Mount Hood are falls and hypothermia.[16][17] [18]
Mount Hood can also be dangerous in that the mountain's travel routes sometimes shift and create unexpected differences from climbers previous experience on the mountain. One example of this shift was reported in the spring of 2007, relating changes in the formation of the popular South Route. Reportedly, the Hogsback, (part of the South Route), shifted west, increasing the difficulty of the climb. Another change occured when a technical "ice chute" formed in the Pearly Gates, increasing the difficulty of that climb. This change pushed some climbers to choose the "left chute" of the Pearly Gates, however; in this alternative route there is a technical ice wall 30ft or greater in height, and with fall exposure of 500+ feet. Now technical ice axes, fall protection, and experience are necessary ( [19]
Prior to the 1980 eruption of Mount St. Helens, the only known fatality related to volcanic activity in the Cascades occurred in 1934 when a climber suffocated in oxygen-poor air while exploring ice caves melted by fumaroles in the Coalman Glacier. These vents near the summit are known for emitting noxious gases such as carbon dioxide and sulfur dioxide.
Despite a quadrupling of forest visitors since 1990, the number of people requiring rescue remains steady at around 25 to 50 per year, largely because of the increased use of cell phones and GPS devices.[20] Of those, 3.4 percent of last year's search and rescue missions were for mountain climbers. In comparison, 20% were for vehicles (including ATVs and snowmobiles), 3% were for mushroom collectors, the remaining 73.6 percent were for skiers, boaters, and participants in other mountain activities.[21]
Wildlife and Recreation
Mount Hood is home to more than 300 species of fish and wildlife. Deer, elk, coyotes, and black bear are just a few of the animals that make their home on the mountain. Along its rivers, streams, and mountain lakes, fishing for small mouth bass, rainbow trout, Chinook salmon or steelhead is a popular sport.[22]
Some of the common birds found in the Mount Hood wetlands are herons, Canadian geese, and mallard ducks. Hummingbirds, Western Meadowlark, Towhees, Northern Flickers, Steller Jays, Pileated Woodpeckers and many species of hawks and owls, including the spotted owl are among the birds that build their nests in old snags and forest groves on Mount Hood.
Mount Hood offers recreation year round such as skiing, biking, camping, fishing, hiking, and horseback riding. One can also just relax, which is the most popular pass time for visitors to the mountain.
Hiking on the over 1200 miles of maintained trails, make hiking the second most popular use of Mount Hood. Hikers can enjoy many varieties of deciduous trees and evergreen forests. Some of these include golden cottonwoods, crimson vine maples, dogwoods, alders, hemlocks and cedars nestled at the 1000ft. and up elevation.
The third most popular activity at Mount Hood is downhill skiing with Timberline lodge being open year round. There are also many natural hot springs and other winter sports areas along with birdwatching and picnicking sites that makes Mount Hood one of the most frequented National Forest in the United States. [23]
Environment
Mount Hood is between the borders of Clackamas County, Oregon and Hood River County. This scenic region, known as The Hood Territory, includes the following incorporated cities: Canby, Clackamas, Damascus, Estacada, Gladstone, Happy Valley, Lake Oswego, Milwaukie, Molalla, Oregon City, Sandy, West Linn, Wilsonville, and the Villages of Mt. Hood (Government Camp, Welches, Brightwood, Rhododendron and Zigzag).[24]. Mount Hood is part of the 1.2 million acre Mount Hood National Forest. It is managed mainly by the U.S. Forest Service, Bureau of Land Management, and the U.S. Department of Interior. Hood Territory is home to two major environmental educational sites, Inkeep Environmental Learning Center located at Clackamas Community College and the Cascade Streamwatch at the Wildwood Recreation Center near Welches, Oregon. The ladder site, focuses on watershed and wetland protection and provides a wetland boardwalk interpretive trail for visitors.
An organization called BARK is calling on the Forest Service to protect the mountain from motor vehicles including OHV's (off highway vehicles). Mount Hood is the first National Forest in the Pacific Northwest to implement the Traveling Plan Rule. This rule designates which roads, trails and areas are open to motorized vehicles. Mount Hood has approximately 4,000 miles of roads. Some of the roads which have not been maintained are causing problems with the watersheds that are a source of drinking water. They are also causing erosion and harm to the wildlife. By monitoring the access of motorized vehicles allowed on Mount Hood, it is believed that less damage will result to the natural habitat on the mountain.[25]
Fires can be beneficial in nature, burning away undergrowth and thinning out overcrowded tree groves. This is helpful because it allows sufficient light and enough space for the trees to grow healthy and fight diseases such as the one caused by the Bark Beetle. [26].
In August of 2006, a lighting strike ignited fires on the East side of Mount Hood. Thousands of true pine and fir trees in this area where dead or diseased due to the infestation of the Bark Beetle. This dry, rotten wood fueled one of the largest fires in history. The magnitude of this fire required thousands of manpower hours and energy to save the rest of the forest.
It becomes evident that optimum maintenance of the forest and watersheds on Mount Hood is essential for protecting our natural resourses such as fresh water, clean air and the aesthetic beauty it now affords. Our vigilance in Hood's care insures future benefits for generations to come.
See also
- Mount Hood Corridor
- Mount Hood Railroad
- Cascade Volcanoes
ReferencesISBN links support NWE through referral fees
- ↑ 1.0 1.1 Mount Hood, Oregon, 11,239 feet, 3426 meters.
- ↑ 2.0 2.1 Mount Hood—History and Hazards of Oregon's Most Recently Active Volcano. U.S. Geological Survey Fact Sheet 060-00. USGS and USFS (June 13,2005). Retrieved 2007-01-16.
- ↑ Glaciers of Oregon. Departments of Geology and Geography at Portland State University. Retrieved 2007-02-24. quoting McNeil, Fred H. (1937). Wy'East The Mountain, A Chronicle of Mount Hood. Metropolitan Press. ASIN B000H5CB6E, ASIN B00085VH7W.
- ↑ Recent Mount Hood Earthquakes. Pacific Northwest Seismic Network. Retrieved 2006-12-15.
- ↑ W.E. Scott, T.C. Pierson, S.P. Schilling, J.E. Costa, C.A. Gardner, J.W. Vallance, and J.J. Major. Volcano Hazards in the Mount Hood Region, Oregon. USGS. Retrieved 2007-02-26.
- ↑ W.E. Scott, T.C. Pierson, S.P. Schilling, J.E. Costa, C.A. Gardner, J.W. Vallance, and J.J. Major (1997). Volcano Hazards in the Mount Hood Region, Oregon (pdf). USGS and US Dept of the Interior. Retrieved 2007-02-26.
- ↑ The Legend of Wy'east. Retrieved 2006-12-19. citing Ella E. Clark (1953). Indian Legends of the Pacific Northwest. University of California Press. ISBN 0520239261.
- ↑ http://pubs.usgs.gov/fs/2000/fs060-00/ Retrieved Sept.2007
- ↑ Mount Hood Volcano, Oregon. USGS Cascades Volcano Observatory. Retrieved 2007-01-16.
- ↑ http://vulcan.wr.usgs.gov/Volcanoes/Cascades/CurrentActivity/current_updates.html Retrieved June 5, 2007.
- ↑ 11.0 11.1 Carolyn L. Driedger and Paul M. Kennard (1986). Ice Volumes on Cascade Volcanoes: Mount Rainier, Mount Hood, Three Sisters and Mount Shasta. Geological Survey Professional Paper 1365. USGS. Retrieved 2007-02-26.
- ↑ Portland State University Northwest GeoData Clearinghouse. Retrieved 2007-02-21.
- ↑ 13.0 13.1 Last Body Recovered From Mount Hood. CBS news (May 312002). Retrieved 2007-05-25.
- ↑ Aimee Green, Mark Larabee and Katy Muldoon (February 19,2007). Everything goes right in Mount Hood search. The Oregonian/OregonLive.com. Retrieved 2007-02-26.
- ↑ "Doctors Remove Legs Of Mount Hood Climber", New York Times, May 19,1986. Retrieved 2006-12-19.
- ↑ See incident history.
- ↑ GORP Mount Hood climbing description. Retrieved 2007-04-17.
- ↑ Previous Season Avalanche Accidents. Westwide Avalanche Network. Retrieved 2006-12-16.
- ↑ Mount Hood Climbing Report, May 17th. United States Forest Service. Retrieved 2007-05-17.
- ↑ Nigel Jaquiss (October 131999). Without A Trace. Willamette Week. Retrieved 2006-12-19.
- ↑ Kristi Keck (February 202007). Weighing the risks of climbing on Mount Hood. CNN. Retrieved 2007-02-20.
- ↑ http://www.fs.fed.us/recreation/programs/nvum/reports/year4/R6_F6_mounthood_final.htm#_Toc75065186 retrieved Sept 2007
- ↑ Oregonian,front page Thursday Sept. 20, ed.Retrieved Sept. 2007
- ↑ http://www.mthoodterritory.com/.retreived Sept.2007
- ↑ http://www.mefeedia.com/feeds/22881/.retreived Sept 2007
- ↑ http://www.sosforests.com/?cat=15. retrieved Sept.2007
Sources and Further Reading
- Barstad, Fred. 1998. Hiking Oregon's Mount Hood & Badger Creek Wilderness. A Falcon guide. Helena, Mont: Falcon Pub. ISBN 0585253420 and ISBN 9780585253428
- Fisher, Timothy F. 2006. Surviving Mount Hood. Sault Ste. Marie, Ont: Moose Hide Books. ISBN 1894650522 and ISBN 9781894650526
- Poindexter, Joseph. 1998. To the summit: fifty mountains that lure, inspire and challenge. New York, N.Y.: Black Dog & Leventhal Publishers. ISBN 1579120415 and ISBN 9781579120412
- Bargar, Keith E., Terry E. C. Keith, and Melvin H. Beeson. 1993. Hydrothermal alteration in the Mount Hood area, Oregon. U.S. Geological Survey bulletin, 2054. Washington: U.S. G.P.O.
External links
- Mount Hood, Oregon. Volcano World. Retrieved June 15, 2007.
- Mount Hood, Oregon. America's Roof. Retrieved June 15, 2007.
- Mount Hood, Oregon. United States Geological Survey. Retrieved June 15, 2007.
