[Paddlewise] Symposium water temps?

I am considering attending the East Coast symposium in Charleston, SC which I 
believe is middle of April.  What kind of water temp should I be expecting?

If I do not make that one I am also considering the Western Michigan 
symposium which I think is the end of May.  What can I expect there?  

My "Winter" paddling gear is probably only good for about 55 degf so I have 
to be a little careful in planning my trips up north. 

Thanks for your help.

Mark J. Arnold
MJAkayaker_at_aol.com
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