Outside the church of St. Margarets in Kings Lynn, embedded in the wall are the High Water marks for various flood years.
In 1978, 1953, 1883, 1949 and 1961 the waters rose to a memorable height.
The stones show the level the water reached on the church building for those years.
When the north winds coincide with the spring tide this can cause flooding.
On the 31st January in 1953 the tidal
surge went on to affect most of the low lying parts of
the East coast. It was sudden, within minutes what had
been a trickle became a full flood.