PenguinOpus
Sysop, Emeritus
Reged: 12/07/02
Posts: 1938
Loc: Bay Area, CA, USA
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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).
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Older data
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.
It includes:
- 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-outages-07Sep-floating.kmz
Katrina Damage Assessment 06Sep-6pm KMZ file
katrinaDamageOutage-06Sep-floating.kmz
Katrina Damage Assessment 05Sep-6pm KMZ file (clamped filled polys)
DamageOutage-05Sep-1800-v3.kmz (floating polys, works better on some graphics cards)
Edited by ink_polaroid (09/14/05 11:13 AM)
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JasonBo
Tourist
Reged: 08/18/05
Posts: 270
Loc: Austin Texas
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Seems to be lacking areas of neworleans
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Aim: jasonbtwc
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PenguinOpus
Sysop, Emeritus
Reged: 12/07/02
Posts: 1938
Loc: Bay Area, CA, USA
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Thanks, Jason. The version that was up initially was missing the damage layer. It should now be included.
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JasonBo
Tourist
Reged: 08/18/05
Posts: 270
Loc: Austin Texas
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I was gonna work on overlay but i am way to tired im thinking i should go to bed 6am comes quick
thanks peng
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Aim: jasonbtwc
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JasonBo
Tourist
Reged: 08/18/05
Posts: 270
Loc: Austin Texas
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Having a problem loading this file to 
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Aim: jasonbtwc
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Mike_in_Florida
Storm Chaser
Reged: 07/25/05
Posts: 970
Loc: Florida, USA
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mine is garbled. Looks like United Nations flags along the bottom when the 'location damage all' layer is on.
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Mike_in_Florida
Storm Chaser
Reged: 07/25/05
Posts: 970
Loc: Florida, USA
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hmmm it's my PC at home because it works fine here at work.
I'll look into my side.
Sorry about that...
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jodyly
Tourist
Reged: 09/05/05
Posts: 9
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Thanks to everyone for this help.
Would FEMA give us these files for the last 7 days of Imagery Derived Assessment ?
8/30, 31,
9/1, 2, 3, 4, and 5 ?
Flooding could be tracked and people can see which areas are dry now, but took water earlier ?
jodyly
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JasonBo
Tourist
Reged: 08/18/05
Posts: 270
Loc: Austin Texas
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Doubt they had any ealier assesmentsof the area
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Aim: jasonbtwc
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jodyly
Tourist
Reged: 09/05/05
Posts: 9
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Hey JB,
You get any sleep ?
Here's the link. to LA. Check out the changes each day.
http://www.gismaps.fema.gov/2005pages/dr1603_rsm.shtm
jodyly
Quote:
Doubt they had any ealier assesmentsof the area
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harb
Tourist
Reged: 08/30/05
Posts: 2
Loc: Pennsylvania, USA
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This is really useful, thanks for the post
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Scott_in_DC
First Post
Reged: 09/06/05
Posts: 1
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Hi, I'm a FEMA point of contact on this.
Shape files can be found here:
http://www.gismaps.fema.gov/2005pages/rsdrkatrina.shtm
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.
Regards,
-Scott
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mdin617
Tourist
Reged: 08/24/05
Posts: 11
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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.
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Mike_in_Florida
Storm Chaser
Reged: 07/25/05
Posts: 970
Loc: Florida, USA
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Actually I had heard this morning that it had gotten worse, though like you, I assumed the flooding had started receding as well.
Maybe NOAA is right-on with this informatiom though your explanation of a 'fudge factor' would let them CYA
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CityCoop
Tourist
Reged: 10/05/04
Posts: 8
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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...
Thanks!
-CityCoop
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PenguinOpus
Sysop, Emeritus
Reged: 12/07/02
Posts: 1938
Loc: Bay Area, CA, USA
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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).
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Clear
Tourist
Reged: 07/09/05
Posts: 15
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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.
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tomweis
First Post
Reged: 09/09/05
Posts: 1
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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.
Edited by tomweis (09/09/05 06:19 PM)
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Frank4
Master Blogger
Reged: 07/10/05
Posts: 1028
Loc: Cary, North Carolina, USA
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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...
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Frank Taylor - Author of Google Earth Blog (also available in Spanish)
All about Google Earth news, features, tips, technologies, and applications.
(If you have story ideas, please send me a private message.)
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Frank4
Master Blogger
Reged: 07/10/05
Posts: 1028
Loc: Cary, North Carolina, USA
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The Legend Key image file is missing.
--------------------
Frank Taylor - Author of Google Earth Blog (also available in Spanish)
All about Google Earth news, features, tips, technologies, and applications.
(If you have story ideas, please send me a private message.)
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PenguinOpus
Sysop, Emeritus
Reged: 12/07/02
Posts: 1938
Loc: Bay Area, CA, USA
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Frank4,
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).
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FDICSK
First Post
Reged: 11/29/05
Posts: 1
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Anyone know If the information is available in ESRI file formats?
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