Scott, and everybody here, just an FYI.

This data is NOT accurate to the degree that we're used to here. The flooding overlay in particular is provably off by several blocks in some cases.

The good news is that it seems to be consistently erring on the side of 'flooded', so it's doubtful that somebody looking at this would be given false hope that their home had survived.

Basically, I wouldn't use this overlay to answer peoples' questions about exactly what's going on on the ground in any more than general terms. I suppose that's true of all the imagery we look at, but just keep in mind that this overlay seems to have quite a bit of fudge factor.

That being said, I should also point out that it's entirely possible, if not probable, that the guys at NGA and FEMA intentionally introduced a margin zone, because of that inherent uncertainty of 'ground truth', and I both understand and approve that, if that's the case. This post was not in any way meant to take away from the work they're doing, but rather to point out that we are not the data consumers that this information was prepared for, but rather we are also being allowed to look at it, and this is just not what we're used to (or maybe it's just me, who knows).

I only brought it up at all because my initial reaction after a week of piecing together floodlines was to think to myself that the flooding had gotten worse somehow, despite the fact that reports are saying that the water is receding.