Geographic Information Systems

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Maps By Mitch

Flood inundation depth map

October 4, 2011


Welcome to "Maps By Mitch". A "blog" of sorts to highlight various maps and the techniques used to create them. I hope to have a new "map" posted on a monthly basis.



This past month we have been busy creating flood inundation maps for many agencies. They include (but are not limited to): federal, state, county, and local officials; the Red Cross; AGAPE; the Army National Guard. These maps were to aid in their planning, response, rescue, and damage assesment from the recent flooding of Tropical Storm Lee. Therefore, we thought it was appropriate for this monthly map to be a flood inundation map.

The map below demonstrates the projected depth of water for a flood stage of 33 feet at the Bloomsburg river gauge.

Please note, the inundation data to support this map was created and provided by the US Army Corps of Engineers in 2001. The mapping is intended to assist local agencies to plan emergency evacuation and flood response actions. Actual conditions during a flood event may vary from those assumed, so the accuracy cannot be guaranteed.

Flood Inundation Map




Comments


011 10:40:57 AM
I would like to see this map expanded to include more of Columbia County flood area. Good job - keep these coming!!!



10/5/2011 6:39:54 PM
Wow! That's cool! Depressing for Old Berwick Road, but cool.



10/23/2011 5:09:28 AM
Keep these articles coinmg as they've opened many new doors for me.


11/30/2011 8:25:50 PM
map quality truly sucks


12/1/2011 7:52:31 AM
The flood inundation layer, which is a raster, is "blocky" in nature, and has been set with a transparency to allow you to view the aerial photography. When doing so, you make sacrifices on both layers - Mitch


12/1/2011 7:55:20 AM
Also, the images we place online are compressed and reduced in quality for web display. We do not want our users waiting 15 minutes to view a map that may be 250MB in size. - Mitch





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