Information about Whitewater Rafting
- For another meaning, see Timber rafting
Rafting in Brazil.
History
Rafting is one of the earliest means of transportation, used as a means for shipping people, hunting, and transferring food.In 1842, Lieutenant John Fremont of the U.S. Army first journalized his rafting expedition on the Platte River. Horace H. Day designed the equipment he used in rafting. Day’s rafts were constructed from four independent rubber cloth tubes and wrap-around floor. [1]
In 1960s, rafting was then recognized and paths like Grand Canyon were routed and whitewater rafting companies were established.
In 1970s, rafting marked its major development as a leisure sport when it was then included in the Munich Olympic Games.
In 1980s, as rafting continued to gain its popularity, many rivers were opened for rafting activitiesincluding rivers in South America and Africa.
In 1990s, rafting was included in major game events like the Barcelona Games in 1992, Atlanta Games in 1996, and the whitewater events of the Summer Olympic Games hosted by Ocoee River in Tennessee Valley. In addition, the International Federation of Rafting was instituted in 1997 and in 1999 the first Official International Championship was held.
Curently, river rafting is still gaining popularity among extreme water sports in order to thrill and excite the raft passengers.
Whitewater rafts
Rafts were originally the simplest form of man’s transportation in water and were then made of several logs, planks or reeds which were fastened together. Nowadays, inflatable boat were used as rafts which were later adopted by the military for beach assaults. It consists of very durable, multi-layered rubberized or vinyl fabrics with several independent air chambers. Its length varies between 3.5 m (11 ft) and 6 m (20 ft), the width between 1.8 m (6 ft) and 2.5 m (8 ft). The exception to this size rule is usually the packraft, which is designed as a portable single-person raft and may be as small as 1.5m long and weigh as little as 4 lbs.Rafts come in a few different forms. In Europe the most common is the symmetrical raft steered with a paddle at the stern. Other types are the asymmetrical, rudder-controlled raft and the symmetrical raft with central helm (oars). Rafts are usually propelled with ordinary paddles and typically hold 4 to 12 persons. In Russia, rafts are often hand made and are often a catamaran style with two inflatable tubes attached to a frame. Pairs of paddlers navigate these rafts. Catamaran style rafts have become popular in the western United States as well, but are typically rowed instead of paddled.
Classes of Whitewater
Class 1: Very small rough areas, requires no maneuvering. (Skill Level: None)
Class 2: Some rough water, maybe some rocks, might require maneuvering.(Skill Level: Basic Paddling Skill)
Class 3: Whitewater, small waves, maybe a small drop, but no considerable danger. May require significant maneuvering.(Skill Level: Experienced paddling skills)
Class 4: Whitewater, medium waves, maybe rocks, maybe a considerable drop, sharp maneuvers may be needed. (Skill Level: Whitewater Experience)
Class 5: Whitewater, large waves, possibility of large rocks and hazards, possibility of a large drop, requires precise maneuvering (Skill Level: Advanced Whitewater Experience)
Class 6: Class 6 rapids are considered to be so dangerous as to be effectively unnavigable on a reliably safe basis. Rafters can expect to encounter substantial whitewater, huge waves, huge rocks and hazards, and/or substantial drops that will impart severe impacts beyond the structural capacities and impact ratings of most all rafting equipment. Traversing a Class 6 rapid has a dramatically increased likelihood of ending in serious injury or death compared to lesser classes. (Skill Level: Successful completion of a Class 6 rapid without serious injury or death is widely considered to be a matter of luck)
Safety
Packrafting in Alaska.
Whitewater rafting can be a dangerous sport, especially if basic safety precautions are not observed. Both commercial and private trips have seen their share of injuries and fatalities, though private travel has typically been associated with greater risk. Depending on the area, legislated safety measures may exist for rafting operators. These range from certification of outfitters, rafts, and raft leaders, to more stringent regulations about equipment and procedures. It is generally advisable to discuss safety measures with a rafting operator before signing on for a trip. The equipment used and the qualifications of the company and raft guides are essential information to be considered.
Like most outdoor sports, rafting in general has become safer over the years. Expertise in the sport has increased, and equipment has become more specialized and increased in quality. As a result the difficulty rating of most river runs has changed. A classic example would be the Colorado River in the Grand Canyon, which has swallowed whole expeditions in the past, leaving only fragments of boats but is now run safely by commercial outfitters hundreds of times each year, with relatively untrained passengers. [2]
Risks in whitewater rafting stem from both environmental dangers and from improper behavior. Certain features on rivers are inherently unsafe and have remained consistently so despite the passage of time. These would include "keeper hydraulics", "strainers" (e.g. fallen trees), dams (especially low-head dams, which tend to produce river-wide keeper hydraulics), undercut rocks, and of course dangerously high waterfalls. Rafting with experienced guides is the safest way to avoid such features. Even in safe areas, however, moving water can always present risks -- such as when a swimmer attempts to stand up on a rocky riverbed in strong current, risking foot entrapment. Irresponsible behavior related to rafting while intoxicated has also contributed to many accidents.
To combat the illusion that rafting is akin to an amusement park ride, and to underscore the personal responsibility each rafter faces on a trip, rafting outfitters generally require customers to sign waiver forms indicating understanding and acceptance of potential serious risks. Rafting trips often begin with safety presentations to educate customers about problems that may arise.
Due to this the overall risk level on a rafting trip with experienced guides using proper precautions is low. Thousands of people safely enjoy raft trips every year.
Issues with rafting
Rafting in Montenegro.
Like all wilderness sports, rafting has to balance the conflict between nature protection and nature use. Because of frequent problems in the past, some rivers now have regulations restricting or specifying the annual and daily operating times.
Conflicts have also arisen with environmentalists when rafting operators, often in co-operation with municipalities and tourism associations, alter the riverbed by dredging and/or blasting in order to eliminate safety risks or create more interesting whitewater features in the river. Incongruously these measures usually are only temporary, since a riverbed is subject to permanent changes.
On the other hand, rafting contributes to the economy of many alpine regions which in turn may contribute to the protection of rivers from hydroelectric power generation and other development. Additionally, white water rafting trips can promote environmentalism. By experiencing first hand the beauty of a given river, individuals who would otherwise be indifferent to the environmental concerns of an area may gain a strong desire to protect and preserve that area because of a positive outdoors experience.
See also
- Paddling
- Swiftwater rescue
- Whitewater
- International Scale of River Difficulty
- Tubing (recreation)
- Packraft
References
External links
Timber rafting is a log transportation method in which logs are tied together into rafts and drifted or pulled across a water body or down a flatter river. It is arguably the second cheapest method of transportation of timber, next after log driving.
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raft is any flat floating structure for travel over water. It is the most basic of boat design, characterized by the absence of a hull. Instead, rafts are kept afloat using any combination of buoyant materials such as wood, sealed barrels, or inflated air chambers.
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river is a natural waterway that transits water through a landscape from higher to lower elevations. It is an integral component of the water cycle. The water within a river is generally collected from precipitation through surface runoff, groundwater recharge (as seen at baseflow
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Whitewater is formed in a rapid, when a river's gradient drops enough to form a bubbly, or aerated and unstable current; the frothy water appears white. The term is also used loosely to refer to less-turbulent but still agitated flows.
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John Charles Frémont (January 21, 1813 – July 13, 1890), was an American military officer, explorer, the first candidate of the Republican Party for the office of President of the United States, and the first presidential candidate of a major party to run on a platform in
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Origin Western Nebraska
Mouth Missouri River, Nebraska
Basin countries United States
Length 310 miles (499 km)
Source elevation
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Mouth Missouri River, Nebraska
Basin countries United States
Length 310 miles (499 km)
Source elevation
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Grand Canyon is a colorful steep-sided gorge carved by the Colorado River in the U.S. state of Arizona. It is largely contained within the Grand Canyon National Park — one of the first national parks in the United States.
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The 1972 Summer Olympics, officially known as the Games of the XX Olympiad, were held in Munich, in what was then West Germany, from 26 August to 11 September 1972. Munich won its Olympic bid in April 1966 over the cities of Detroit, Madrid and Montreal.
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The 1992 Summer Olympics, officially known as the Games of the XXV Olympiad, were held in 1992 in Barcelona, Spain. Barcelona, the birth city of IOC president Juan Antonio Samaranch, was selected over Amsterdam, Belgrade, Birmingham, Brisbane and Paris in Lausanne,
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The 1996 Summer Olympics, formally known as the Games of the XXVI Olympiad and informally known as the Centennial Olympics, were held in 1996 in Atlanta, Georgia, United States.
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An inflatable boat is a lightweight boat constructed with its sides and bow made of flexible tubes containing pressurised gas. For smaller boats, the floor and hull beneath it is often flexible.
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Distinction from "Pool Toy." In this article, packrafts/trail boats are differentiated from “pool toys” or similar “flotation devices”, which are intended for use in an enclosed and controlled body of water, such as a swimming pool.
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OAR may refer to:
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- Original aspect ratio
- Marina Municipal Airport (IATA code: OAR), an airport in Marina, California
- Office of AIDS Research, part of the United States National Institutes of Health
- Of A Revolution, an American rock band
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paddle is a tool used for pushing against liquids, either as a form of propulsion in a boat or as an implement for mixing.
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Canoe/Kayak Paddles
Materials and designs
Paddles commonly used in canoes consist of a wooden, fibreglass carbon fiber or metal rod (the..... Click the link for more information.
HSC Tarifa Jet, Large, commercial high-speed catamaran ferry.]]
A catamaran (from Tamil kattu "to tie" and maram "wood, tree") is a type of boat or ship consisting of two hulls joined by a frame. Catamarans can be sail- or engine-powered.
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A catamaran (from Tamil kattu "to tie" and maram "wood, tree") is a type of boat or ship consisting of two hulls joined by a frame. Catamarans can be sail- or engine-powered.
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The International Scale of River Difficulty is a standardized scale used to rate the safety of a stretch of river, or a single rapid. The grade reflects the technical difficulty, skill level required and danger associated with the section of river.
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Mouth Gulf of California
Basin countries United States, Mexico
Length 2,330 km (1,450 mi)
Source elevation ~2700 m (~9000 ft)
Avg. discharge 620 m³/s (22,000 ft³/s)[1]
Basin area 629,100 km² (242,900 mi²)
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Basin countries United States, Mexico
Length 2,330 km (1,450 mi)
Source elevation ~2700 m (~9000 ft)
Avg. discharge 620 m³/s (22,000 ft³/s)[1]
Basin area 629,100 km² (242,900 mi²)
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Grand Canyon is a colorful steep-sided gorge carved by the Colorado River in the U.S. state of Arizona. It is largely contained within the Grand Canyon National Park — one of the first national parks in the United States.
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Hydroelectricity is electricity produced by hydropower. Hydroelectricity now supplies about 715,000 MWe or 19% of world electricity (16% in 2003), accounting for over 63% of the total electricity from renewables in 2005.
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Environmentalism is a concern for the preservation, restoration, or improvement of the natural environment, such as the conservation of natural resources, prevention of pollution, and certain land use actions.
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A paddle is an implement for mixing or pushing against liquids, typically in order to propel a boat.
Paddle or Paddling may also refer to:
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Paddle or Paddling may also refer to:
- Paddle (game controller), a computer/video game controller
- Ping-pong paddle, the "racquet" in table tennis
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Swiftwater Rescue is a subset of technical rescue that involves the use of specially trained personnel, ropes, and mechanical advantage systems often much more robust than those used in rope rescue because of the added pressure of moving water.
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Whitewater is formed in a rapid, when a river's gradient drops enough to form a bubbly, or aerated and unstable current; the frothy water appears white. The term is also used loosely to refer to less-turbulent but still agitated flows.
..... Click the link for more information.
..... Click the link for more information.
The International Scale of River Difficulty is a standardized scale used to rate the safety of a stretch of river, or a single rapid. The grade reflects the technical difficulty, skill level required and danger associated with the section of river.
..... Click the link for more information.
..... Click the link for more information.
Tubing, also known as inner tubing, is the recreational activity of riding an inner tube, either on water, snow, or through the air. The tubes themselves are also known as "donuts" or "biscuits" because of their shape.
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Distinction from "Pool Toy." In this article, packrafts/trail boats are differentiated from “pool toys” or similar “flotation devices”, which are intended for use in an enclosed and controlled body of water, such as a swimming pool.
..... Click the link for more information.
..... Click the link for more information.
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