You probably have to have redundant levee systems with canals in between them, like the Dutch have, to make sure that incoming water is channeled off to areas where you deal with it rather than have it drown you. ↗
Amsterdam was a great surprise to me. I had always thought of Venice as the city of canals; it had never entered my mind that I should find similar conditions in a Dutch town. ↗
In several sections, both natural in the banks of the Mississippi and its numerous arms, and where artificial canals had been cut, I observed erect stumps of trees, with their roots attached, buried in strata at different heights, one over the other. ↗