[tet68]

I fail to understand why there isn’t an
orange band around the entire coast line?
Is the ocean only going to rise in certain areas???

[Go Gordon]

I fail to understand why there isn’t an orange band around the entire coast line? Is the ocean only going to rise in certain areas???

Apparently, different sections of the "coast" have different elevations. Lower elevations will succumb to the rising seas, and higher elevations, not quite.

[rwa265]

I am not at all familiar with that area. But it appears from looking at Google map that much of the red area is already unoccupied marshland.