Is white water rafting dangerous in rain?

Answer 1

Severe rains can cause flash flooding, a rapid rise in the height and speed of the river, which means an increased level of difficulty for rafters. It doesn't have to rain where the rafter is in order for the flood to impact him; the rain can occur far upstream.

Also the severe rain can cause the mud-rock flow from the two sides of the river, because the most rafting site is in the river which locate in the middle of the mountains.