"I would like to express my friendship and condolences to you and to the German people in these difficult days," Herzog wrote. He added that he was praying for the people killed, injured, or missing in the catastrophe, and pledged that Israel would stand by Germany's side and provide assistance in every way possible.
Over the past several days the floods, which have mostly hit the German states of Rhineland Palatinate and North Rhine-Westphalia and eastern Belgium, have cut off entire communities from power and communications.
Tens of thousands of residents in the region have been evacuated in the past two days, while soldiers, fire brigades and volunteers worked frantically throughout Friday night to enforce dykes and prevent flooding.
Over 170 people have been proclaimed dead so far.