Bit off-topic regarding your OP, but have you seen this article from the US Geological Survey?
If sea level rises go to the extremes suggested, then many rivers will be affected - the Thames, for example, will destroy London. I don't know how far above present-day mean sea level the Great Lakes are, but you should be able to work it all out from a survey map.
Re: World Tides - Am I Correct in my Assumption?
