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Because the "backroller" is part of a recirculating current which can hold an object (you) against the face of the dam. If you approach too near the "boil line", even from apparent safety downstream, the current may pull you in (yes, pull you UPSTREAM) and you may never escape.
Unwary boaters, fisherman, etc. drown in these currents every year, and many professional rescuers have lost their lives trying to save them.
See http://www.paddlermagazine.com/issues/2008-3/article_321.shtml
What else can I help you with?
What is the danger of getting caught in a backroller near a low-head dam?
It is a danger to get caught in a backroller near a low-head dam because the "backroller" is part of a recirculating current which can hold an you against the face of the dam. If you approach too near the "boil line", even from apparent safety downstream, the current may pull you in and you may never escape
What major hazard is created by low-head dams?
Low-head dams can create a hazard known as a drowning machine due to the strong recirculating currents they produce at the base of the dam. These currents can trap and hold objects, swimmers, or boats, making it difficult for them to escape. This can lead to dangerous situations and potential drownings.
Why are low head dams dangerous to boats?
Low Head dams often have tops that are below the water surface. But aside from their lack of visibility, they can create a fatal trap for small boats. Water going over a low-head dam creates a strong recirculating current (a backroller) and a turbulent upflow (a boil). These currents can push boats back against the downstream side of the dam, where the boats may capsize and their occupants may be pulled under.
Why is head lice dangerous?
Lice are not dangerous! They just make your head itch and may leave a rash...
What was han solo smuggling?
Han Solo was smuggling weapons that he had to jettison into space to avoid getting caught. But they belonged to Jabba the Hutt who put a bounty on his head.
Should flyballs be caught over head?
no
How can I prevent my head burrowing baby from getting into dangerous situations while exploring their surroundings?
To prevent your head burrowing baby from getting into dangerous situations while exploring, you can baby-proof your home by securing furniture, covering electrical outlets, using safety gates, and keeping small objects out of reach. Supervise your baby closely and create a safe play area for them to explore.
Is the head circles stretch dangerous?
yes it is .
Why do you get spots on your head?
if you are getting spots on your head you may be getting acne x
What do you do if you are staring at your daughters friends boobs and the friend catches you and she is only 13?
Ignore the issue, and don't ever get caught doing it again. This is a very dangerous area: to your relationship with your daughter, her friends, and her friends' family. Use your head, man!
How danger is Half Head Pain?
It is Dangerous if you have migraine and if it is just a normal headache than it is not too dangerous
Can getting hit on the head restore sight?
if you are blind can getting hit on the head restore your sight
