[Rosie] There's a concept of sacrificial land - the water is going to come up 'so far' but no further. I think the same is thought of some of the houses. Besides, the flood would only reach the bottom half of your house where the washing machine, bikes and canoes are kept. The living room and kitchen are usually at the same level as the road running along the top of the dyke.
(pen) Ah! The Dutch must be a stoic lot. I'm happy on my hill but ironically a few million years ago it was a beach, which accounts for the deposits of rounded pebbles a couple of miles away, the so-called Blackheath Beds.
There's thick and dull fog obscuring the whole of Rotterdam from my 6th floor office window this morning. Yet as I drove off the ferry which arrived in Rotterdam from Blighty this morning, I was almost blinded by the sun shining into the off-ramp. Oh well. Never mind. The eggs, sausage and bacon on board this morning was very nice.