|Katrina Damage Assessment data (updated to Sep14)||PenguinOpus||9/5/05 10:05 PM|
New updates for 10am, Wednesday 14th September:
Katrina Damage Assessment 14Sep-10am KMZ file.
Katrina Damage Assessment 14Sep-10am KMZ file (floating polys for older graphics cards).
Katrina Damage Assessment 12Sep-6pm KMZ file.
Katrina Damage Assessment 12Sep-6pm KMZ file (floating polys for older graphics cards).
Katrina Damage Assessment 11Sep-6pm KMZ file.
Katrina Damage Assessment 11Sep-6pm KMZ file (floating polys for older graphics cards).
Katrina Damage Assessment 09Sep-10am KMZ file
This data was made available to Google and we have been given permission to publish it for Google Earth users. It contains the damage assessment data that was used to create this document: http://www.gismaps.fema.gov/2005pages/dr1603.shtm
NOTE (as of Wednesday night):
NGA advises that they are beginning to map the receding floodwaters in New Orleans. This data set should represent the maximum flooding extent, but future data sets may show smaller flooded areas as the flooding is pumped out.
- flood coverage
- damage areas by damage level
- road/rail/bridge outages
This is VERY useful data for displaced residents and emergency personnel.
Note, this file makes heavy use of "filled polygons". If your graphics card or driver is having problems with them (either not drawing or drawing "zingers"), try switching from OpenGL to Direct3D (or vice versa). Upgrading your graphics driver to most recent is always a good idea.
If that doesn't work, try this file: Katrina-damage-outages-09Sep-1000-floating.kmz
which avoids the use of clamped filled polygons. It may draw a bit slower, but is more likely to work on old cards.
Historical: Sep 5th/6th, 6pm data.
Katrina Damage Assessment 07Sep-6pm KMZ file
Katrina Damage Assessment 06Sep-6pm KMZ file
Katrina Damage Assessment 05Sep-6pm KMZ file (clamped filled polys)
DamageOutage-05Sep-1800-v3.kmz (floating polys, works better on some graphics cards)
|Re: Very Important: Katrina Damage Assessment data||JasonBo||9/5/05 11:10 PM|
Seems to be lacking areas of neworleans
|Re: Very Important: Katrina Damage Assessment data||PenguinOpus||9/5/05 11:33 PM|
Thanks, Jason. The version that was up initially was missing the damage layer. It should now be included.
|Re: Very Important: Katrina Damage Assessment data||JasonBo||9/5/05 11:36 PM|
I was gonna work on overlay but i am way to tired im thinking i should go to bed 6am comes quick
|Re: Very Important: Katrina Damage Assessment data||JasonBo||9/5/05 11:44 PM|
Having a problem loading this file to
|Re: Very Important: Katrina Damage Assessment data||Mike_in_Florida||9/6/05 2:21 AM|
|Re: Very Important: Katrina Damage Assessment data||Mike_in_Florida||9/6/05 3:55 AM|
|Re: Very Important: Katrina Damage Assessment data||jodyly||9/6/05 8:05 AM|
Thanks to everyone for this help.
Would FEMA give us these files for the last 7 days of Imagery Derived Assessment ?
9/1, 2, 3, 4, and 5 ?
Flooding could be tracked and people can see which areas are dry now, but took water earlier ?
|Re: Very Important: Katrina Damage Assessment data||JasonBo||9/6/05 8:13 AM|
Doubt they had any ealier assesmentsof the area
|Re: Very Important: Katrina Damage Assessment data||jodyly||9/6/05 8:32 AM|
You get any sleep ?
Here's the link. to LA. Check out the changes each day.
|Thanks for posting this||harb||9/6/05 5:57 PM|
This is really useful, thanks for the post
|Re: Very Important: Katrina Damage Assessment data||Scott_in_DC||9/6/05 11:51 PM|
Hi, I'm a FEMA point of contact on this.
Shape files can be found here:
The older ones likely reflect how much assessment has been done rather than how much flooding occurred at that point in time.
We should have this page cleaned up with updates in the next few days. We will continue to provide Google with updates.
|Accuracy||mdin617||9/7/05 12:50 AM|
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.
|Re: Accuracy||Mike_in_Florida||9/7/05 6:49 AM|
|Re: Very Important: Katrina Damage Assessment data||CityCoop||9/7/05 7:17 AM|
This is very helpful... thanks!
Will you be updating it as FEMA releases new data? I noticed there's a Sep 6 one up already...
|Re: Very Important: Katrina Damage Assessment data||PenguinOpus||9/7/05 7:23 AM|
I was working on it as you were typing. The main file has been updated, now working on the 2nd (non clamped filled poly version).
|Thanks!||Clear||9/7/05 11:17 AM|
Thank you Scott, and the many others that are making this information available. I'm very glad to hear of the possibility of updates.
I've heard from all over that seeing this kind of information is very helpful to people. I'm working with the local Red Cross shelter to give evacuees access to this data through Google Earth. It's nice to know that even us computer desk potatoes can do something.
|Re: Very Important: Katrina Damage Assessment data||tomweis||9/9/05 6:16 PM|
Thanks for that link! This is very valuable information.
I've been looking all over the net for some vector or thematic maps of the damage assessment for download. Everything seems to be displayed by pdf or hosted through an IMS service or GE.
The imagery service has been outstanding...but the vector downloads have been non-existant. I've been actually very frustrated visiting many sites hosting GIS data and only finding images.
|Re: Very Important: Katrina Damage Assessment data||Frank4||9/10/05 6:42 AM|
How about making it a network link so people who are seriously interested don't have to download a new KMZ when you get new data? Make sure you put the date of the assessment in the Key...
|Re: Very Important: Katrina Damage Assessment data||Frank4||9/10/05 8:31 AM|
The Legend Key image file is missing.
|Re: Very Important: Katrina Damage Assessment data||PenguinOpus||9/10/05 10:14 AM|
Same problem as the other one, now fixed. Thanks for pointing this out. I had one of our interns take this job over and this problem is a very subtle one (that doesn't get caught in testing because it works fine inside Google).
|Re: Katrina Damage Assessment data (updated to Sep14)||FDICSK||11/29/05 6:40 PM|
Anyone know If the information is available in ESRI file formats?
|Re: Katrina Damage Assessment data (updated to Sep14)||zheng zheng||4/9/13 8:04 AM|
how to download this map?
|Re: Katrina Damage Assessment data (updated to Sep14)||Hill.||4/9/13 9:48 AM|
KMZ links no longer work. They re-direct to first page of the GEC forum. Moved to archives.