Sanhedrin 77 - No Liability for Indirect Killing
However, this is only so when the water that reached the victim fell on him immediately after the barrier was breached. If some time lapsed before the water reached the victim, it is no longer considered the perpetrator's primary force, and he is not liable.
As a general principle, one is liable for murder only if it was caused by his direct force, not by any removed or consequential action, and, of course, if he has been properly warned a short while before the action.
Art: Landscape with a waterfall by William Payne
