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Created 1-Jun-13
Modified 1-Jun-13
Visitors 1
18 photos
The water travels at different speeds along the length of the Niagara River. South of the Falls where the river is wide and slow, the maximum speed is about 40km/h. Near the brink of the Falls, a speed of 109 km/h has been recorded. As the water travels through the Whirlpool Rapids at White Water Walk, it is traveling at about 48km/hr or 30mph, creating the Whirlpool Rapids - "Class 6 white-water rapids". Rivers are rated on a scale of 1 to 6 in eastern North America, and 1 to 10 in western North America. The Colorado River is the benchmark for white-water, where some sections are Class 5 and 6 and the flow is 60,000cfs. White Water Rapids - Class Definitions Class 1: Little to no current. Small waves with no obstacles. Class 2: More current than Class 1 with bigger waves, but no major obstacles. Class 3: Rapids are longer and more turbulent. Bigger waves, holes and stronger currents than Class 2. Generally considered intermediate. Proper guide training is a prerequisite for safe navigation of Class 3 and above. Class 4: Steeper, longer and containing more obstructions than Class 3. Multiple obstacles to maneuver around. Trained guide is necessary. Class 5: Strong currents and big waves. Several boulders and holes. Has a greater potential to hold and flip boats. Class 6: Extremely difficult to successfully maneuver due to significantly steeper vertical drops and boulders. Usually considered unrunnable.
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