Newly released CCTV footage shows floodwater raging done a room successful Long Island, New York, causing astir $10m (£7.5m) successful damage.
The flood - connected 19 August - was caused by dense rainfall, and knocked down walls, swept distant objects and destroyed centuries-old books and documents.
At the time, Suffolk County - wherever the room is located - and New York State declared a authorities of emergency, opening the doorway for national assistance to assistance the rebuild effort.
In a station connected its website, the room said the gathering volition stay closed "until further notice... portion we proceed to measure the harm and statesman to rebuild".