Whitewater sports

thumb|Rafting in Grand Canyon, USA thumb|Rafting in Himachal Pradesh, India thumb|right|Whitewater rafting along the Cagayan de Oro River, Philippines thumb|right|Rafting on the Arkansas River, [[Colorado, US]] thumb|Rafting in Ladakh, India thumb|Rafting in Alaska thumb|Rafting on the Tara river, Bosnia Rafting and whitewater rafting are recreational outdoor activities which use an inflatable raft to navigate a river or other body of water. This is often done on whitewater or different degrees of rough water. Dealing with risk is often a part of the experience.

thumb|A woman kayaking in a lagoon thumb|Kayaking in whitewater [[rapids]] Kayaking is the use of a kayak for moving over water. It is distinguished from canoeing by the sitting position of the paddler and the number of blades on the paddle. A kayak is a low-to-the-water, canoe-like boat in which the paddler sits facing forward, legs in front, using a double-bladed paddle to pull front-to-back on one side and then the other in rotation. Most kayaks have closed decks, although sit-on-top and inflatable kayaks are growing in popularity as well.

discipline in sport of canoeing and kayaking

thumb|right|A riverboarder floats down the Kern River at about 110 m3/s (4,000 cu ft/s). Riverboarding is a boardsport in which the participant lies prone on their board with fins on their feet for propulsion and steering. This sport is also known as hydrospeed in Europe and as riverboarding or white-water sledging in New Zealand, depending on the type of board used. Riverboarding includes commercial, recreational and the swiftwater rescue practice of using a high-flotation riverboard, designed for buoyancy in highly aerated water.

Grading system for river rapids

thumb|220px|right|Whitewater on the river Guil ([[French Alps)]] thumb|220px|right|Whitewater on the small rapid of Kannonkoski, [[Central Finland]] thumb|220px|right|Vivid water of the Torne (Finnish and Swedish river)|Torne River between Sweden and Finland. alt=Whitewater at Yosemite|thumb|Whitewater at Yosemite Whitewater forms in the context of rapids, in particular, when a river's gradient changes enough to generate so much turbulence that air is trapped within the water. This forms an unstable current that froths, making the water appear opaque and white.

discipline of whitewater kayaking or canoeing

sport of surfing either standing waves, tidal bores or upstream waves in rivers

type of sport