how do you make a nuclear bomb

The flood took place on the 15th of August but there was a build up to the flood. This meant that the flood turned out much worse than I could have been. Rain had been falling and the weather had been terrible all week. This caused the ground to be saturated before the huge rush of rain. When the ground is saturated any more water that falls will travel as surface run off. This meant that when the huge rush of rain fell on Friday virtually all of the rain fell as surface run off. This incre...