My faith is shaken. Can I as an individual help others to overcome this trauma?
Come on! A flood cannot shake your faith. Then it is no faith at all. Simply know that in every moment of crisis, you will get help and you are helped. There is a power that stands with you, which helps you. That is all you need to keep in mind.
If a torrential rain, or a flood, or a famine can shake your faith, then it is not really faith. It is an incidental concept, that's all. This is the testing time for faith, so keep it steadfast.