I would look for a local RACES group in your area.  ARRL may have a list on their site, but I am not certain.  The local EOC may have a RACES aspect...most do on paper at least. 
 
I was IN the local RACES group, I even ran the nets for a while...but all in all, I found that there was little I could NOT do if RACES wasn't at the station during flooding. 
Quite honestly, my Verizon laptop wireless card is a pretty remarkable thing, and I've found that with it and a little extra gear, we have quite a communications hub...in fact...I'll post an idea I'm working on a bit later.