[Alberta's Child]

Regardless of where you get the fill, the period of time that would be required to get it in place will not be measured in weeks, months, or even years -- it will be decades.

[oceanview]

you build those sections of the city a little at a time, as fill is added. dredging the lake has the added benefit of lowering the water level. didn't Japan build an entire airport using this technique? I believe it even has a system to self-level the terminals on it.