I found a new (to me) detailed map of Lake Lanier at the following location:
http://lanier.sam.usace.army.mil/navigation/
Looks like it was published in September of '05 by the Army Corps of Engineers. It's actually a book of 38 maps which can either be browsed online or downloaded as a PDF (about 11 Meg in size).
Chuck Painter.
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Thanks, this looks good.
Barrett