Considering The Condition Of The Water-Consider the River to assess the water flow. If your angle is too high, you'll see the waves and the flow seems very small. The effects of traffic will more aggressively through a narrow region. The flow of water can rise dramatically because of: a the source of the haze, the dam was opened.-When the water temperature falls below 10 degrees, you need to dress warm. Always a must to dry clothes and a zipper into a waterproof bag. You can only stay in for longer in the water when the water temperature is not below 21 degrees. Water temperature below 20 degrees will lead to dangerous hypothermia if the body is not protected. Wearing full clothes, bad symptoms will appear after 8 hours in the country, without clothes, only after 4 hours. When temperature 15 degrees, no more than 2 hours.-Obstacles under water: most dangerous obstacles for boats that are hidden below the surface of the water, especially the horizontal stretch of the river barriers are difficult to see and don't have any warning signs, but if your boat rammed the truth. Obstacles can be a trunk, a rock, a pile of bridges, tree ...
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