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Message
GIS data for mapping
Posted on 5/13/11 at 2:32 pm
Posted on 5/13/11 at 2:32 pm
Does anyone know where I can find the source data behind the inundation maps? I am trying to overlay this data with hospitals that my company manages. I have check COE and NOAA websites. Any help would be appreciated.
2
Posted on 5/13/11 at 2:38 pm to DeafValley
atlas.lsu.edu
Its been forever since I did any GIS work, but I seem to remember this was a really good basemap source.
Its been forever since I did any GIS work, but I seem to remember this was a really good basemap source.
Posted on 5/13/11 at 2:40 pm to Grilled Bald Eagle
quote:
atlas.lsu.edu
That's one of the best resources around for free data.
Posted on 5/13/11 at 2:47 pm to DeafValley
quote:
Does anyone know where I can find the source data behind the inundation maps
What you are seeing is a depth grid they developed by subtracting the ground surface elevation grid from the water surface elevation grid. Not sure if the Corps would publish that type of data.
Posted on 5/13/11 at 2:49 pm to glb
you can take their inundation map and georeference using a few roads and then make your own rough depth layer.
Posted on 5/13/11 at 2:53 pm to glb
quote:
What you are seeing is a depth grid they developed by subtracting the ground surface elevation grid from the water surface elevation grid. Not sure if the Corps would publish that type of data.
Elevation data is readily available. All you'd have to do is take a DEM and classify the elevation ranges for flooding.
Posted on 5/13/11 at 3:15 pm to BottomlandBrew
Posted on 5/13/11 at 3:52 pm to BottomlandBrew
quote:
Elevation data is readily available. All you'd have to do is take a DEM and classify the elevation ranges for flooding.
The ground surface elevation data is readily available, but you don't know what the water surface elevation is without their depth grid.
Posted on 5/13/11 at 4:03 pm to glb
quote:
The ground surface elevation data is readily available, but you don't know what the water surface elevation is without their depth grid.
Surely you can just guesstimate a water level and then calculate the depths from that? Thats how we got our depths for the Katrina fatality models we were running post-storm.
Posted on 5/13/11 at 4:14 pm to Grilled Bald Eagle
Thanks. This should help.
Posted on 5/13/11 at 4:15 pm to Grilled Bald Eagle
quote:
Surely you can just guesstimate a water level and then calculate the depths from that?
That's what a coworker and I did yesterday. We just kind of gave it a range.
Map
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