The beach ridges must build higher (~2 m/20 years) in
some places, because every meter will save somewhat.
You shall build not so close ashore because tsunamis, and because the polar glaciers melt very rapidly now.
The beach ridges must build higher (~2 m/20 years) in
some places, because every meter will save somewhat.
The possible return water must open the
gates. Near by ridges will be perhaps
gardens and forests for protect the area.
Beach ridges help also against hurriganes.
The same bank will save perhaps thousands
of years, and a tsunami will sure arrive
between that time.
The bank shall be made by knotty resinous trees, soil and stones. Above bank can be build a road or even highway.
Harbours and beachs are outside of the bank of course, but the population and business will be lokated mainly inside.
Tapani Hakonen