196. Self-protection against extraordinary danger.

An owner or occupier is entitled to protect his land against an extraordinary danger which threatens it, even though he thereby makes it necessary for his neighbour either to take similar measures or to put up with the consequences of not doing so1. However, an owner or occupier is not entitled either to prevent injury to his own property by diverting a natural stream, whether tidal or not, or the accustomed flow of flood water, from its accustomed channel so as to throw it and its destructive effects on to his neighbour's land