Stocking up on candles and regular batteries is both expensive and may not be enough as neither is a renewable resource. Also, neither will help you with having a working cell phone and access to the internet.
Hand Crank Radios
USB Pocket Chargers
Fire and Flood restoration
If you did get flooded, get a professional. Nicole of Home Clean Home (HCH) will make sure your home is dry and mold free. HCH services most of NY, up to Albany, and will bring their own generators if your power has not been restored.