Which flood-damage records proved most useful later? / 哪些洪灾损失记录后来最有用？

Discuss the photos, inventories, dates, receipts, or official notices that helped with repairs or assistance. Do not post policy numbers, IDs, or other private documents. 可以讨论哪些照片、清单、日期、收据或官方通知对维修和援助有帮助；请勿发布保单号、证件或私人文件。