Not to be confused with Flash Flood (STD2).
Flash Flood is a disaster in Survive The Disasters.
A blue plastic brick resembling the water level will start to rise on the map. Everyone who stays below the water level will receive 20 damage per second. The best way to survive is to get to a high place.
- On previous versions, players who touch the water were supposed to die instantly.
- This disaster was called "Rising Water" on earlier 'classic' versions.