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Posted: 3/10/2006 3:43:25 PM EDT
I was online and looking at the altitude readout and I noticed that different parts of some of the great lakes had different altitude readings on the same lake. Anyone know how they figure this out?
Link Posted: 3/10/2006 3:44:46 PM EDT
[Last Edit: 3/10/2006 3:45:14 PM EDT by blacklisted]
It's probably radar or something, and it most likely screws up with water.

I've wondered about this myself.
Link Posted: 3/10/2006 3:54:02 PM EDT
Most likely USGS DEM's. (US Geological Survey Digital Elevation Model) Probably several other sources are integrated as well.
Link Posted: 3/10/2006 3:57:48 PM EDT
From the Mothership like everyone else!

At night in my solitary sojourns around our fine planet I often slide between the clefts of the Grand Canyon, hit Old Faithful for a splash and then take a relaxing dip in Lake Superior followed by a nightcap near the Eifel Tower.

GoogleEarth is a nice program.
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