Curtis L. Olson writes:

 > > The lake itself seems to fit really well in the SRTM data!
 > 
 > There's a small secret that relates to this.  The terragear tools
 > flatten lakes and pull the edge nodes down to water "level".  So most
 > of the time, lakes and streams do look like they fit there perfectly
 > (even if they might not quite ... especially vmap0 data can be off by
 > a noticable amount relative to the SRTM data.

In this case, though, note that the slopes are fairly gentle.


All the best,


David

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