Whenever I read stories of people drowning in floods, it seems there was only a foot of rain or less. I can see how this would be extremely destructive but how does water up to your neck and higher occur?
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The rainfall received is received over the whole area, a foot of rain can actually be a lot if it’s received in a short space of time like an hour or two, and if it’s over a large region then it can be quite devastating. This is because the rainfall will drain through its local water shed, so anyone who is settled in a low lying area or flood plain won’t experience a foot of rain in height, but will be on the receiving end of the accumulation of rain water draining from the entire area. If they are in the flood plain that water can easily be a meter or two of rushing water, sweeping them away and getting pushed under the debris.
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