Hi
The Otter, boat and even the garden furniture is tied up to something solid, other wise it would float off!
The levee is designed to cope with a 100 yr flood event, water level > 6.2m \ 20ft, normally 1-2m. That means huge fresh water levels coming down the river at the same time as an unusually high spring tide. So thats plan A
If it the levee was over topped, I have flood doors for the house as a secondary defense, plus pumps etc, to keep the water out of tbe house. Thats plan B.
If it gets through that lot, then the house is "flood resilient", which means that damage will be limited..For example, the downstairs floors are tiled, electrics are all well above the likely flood level, plasterwork is lime (can take a soaking), etc. So thats plan C.
So hopefully were ready for all eventualities.
Ian