This is bothering me. People don't seem to be aware of ocean levels rising. A $2.1 trillion infrastructure plan that doesn't include raising sea walls or infrastructure that can absorb or redirect water. It would be nothing within a budget of that scale.

What does it take to reinforce a wall? Is concrete the strongest material we have in building? What form should reinforcement take?

-impermeability and Strength: structure with many layers of reinforcement

-of course, it is the ground behind the immediate barrier that needs to hold

Need better predictions about the volume of water

-will ice in deeper portions of the ocean melt?

(-the obvious still needed: what is the volume of ice quite certain to melt Intuition: an educated guess is better than nothing)

-rate of water level rising

-given that we are concerned with only the surface layer of the ocean, possibly the pressure would be less than what initially appears

Complex problems usually require complex solutions  

-was the land elevation survey done: then, prioritization and traffic planning

(-water, food, shelter, communication, transportation)