Talk:Lake Superior 47, -86

From Geohashing

Interesting

Well, I guess that depends where you set the salinity threshold. The Caspian Sea has a little more salt, but still much less than the other oceans. It's technically a large lake, whose relative salinity stems from having no outflows -- relet 18:57, 5 May 2009 (UTC)

I wouldn't advise you to drink it. The Caspian's salinity is 12 parts per thousand (or 12‰ -- what a great symbol!), which is indeed only about one-third that of the great oceans. The standard threshold for fresh vs. brackish water is 0.5 ppt. So while the authorities disagree about whether the Caspian Sea is a really big lake or a small ocean, I think they agree that it is not a freshwater lake.
It certainly is big, though. I counted fifteen all-water graticules in the Caspian, vs. just the one in the "Great" Lakes. --starbird 03:03, 6 May 2009 (UTC)
Full ack and thanks. Drinkability probably mackes for a very good threshold for freshwater. I did put much consideration into that when counting graticules. :) -- relet 07:10, 6 May 2009 (UTC)