They do it all the time. Depth doesn't create suction, pressure differentials do. And there's no differential between the trench and any of the other water around it. read more
They do it all the time. Depth doesn't create suction, pressure differentials do. And there's no differential between the trench and any of the other water around it. The only conceivable way for it to suck something down would be if something opened up a hole and started draining the water through it, but that can't actually happen. read more
The pressure of a water column at the bottom of the trench is 15750 psi (courtesy of wikipedia). Area of a circle is pi x r 2, since r is 1 its just pi, so 3.14 cm 2. Converting to in 2 gives us .486 in 2. Multiply by 15750 and we get 7665.5 pounds of force, just under that leak alone. read more