DM, I understand that it is difficult, but what solutions do you suggest? The water is going up, not down. There are too many people in a structure that can't accomodate them. The heat must be unbearable. There must be fights happening, at least one apparent suicide already (that we know of). You want them to wait three or four weeks until the water subsides?

The military pushes armies with thousands of men many miles across all types of terrain. I'm quite certain they have vehicles that can move a few thousand people a few miles.