The American Red Cross on their Prepare section of their website say that you need to have your important documents in a waterproof, portable container. So that they are retrievable and protected from storms, rising water or other disasters that may occur. Some of the documents that they suggest keep in a waterproof case or document bag are Important Family Documents

• Keep these records in a waterproof, portable container:
  • Will, insurance policies, contracts deeds, stocks and bonds
  • Passports, social security cards, immunization records
  • Bank account numbers
  • Credit card account numbers and companies
• Inventory of valuable household goods, important telephone numbers
• Family records (birth, marriage, death certificates)
These waterproof cases hold a variety of items and are perfect to keep your paperwork high and dry.