Re: [CF-maps] elevation in water of any importance?

[Mark W. <mw...@so...>]

  short answer - to the best of my knowledge, the negative elevation of water 
doesn't make a difference.

  Originally, that was used to determine shallow, normal, and deep seas.

  From a purely technical view, the negative elevations only make some sense - 
elevation of water should really be the surface elevation of the water, and if 
needed, there should be a different attribute to denote how deep it is.  After 
all, there are (or should be) lakes that are not at sea level (0)