The North Sea flood of 2007 was expected to cause flooding but the water level came to only 10 centimeters below the top of the sea wall and caused very  minimal damage.
The flood and waves were expected to overwhelm sea defences and cause extensive flooding; in particular, the coasts of Norfolk and Kent. However, in the event, the storm surge was 20 centimetres (7.9 in) less than forecast, and damage was relatively minor. The water level came to just 10 cm below the top of the sea wall surrounding Great Yarmouth. 
