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This is a map of the Great Lakes / Saint Lawrence River Watershed. I, Karl Musser, created it based on USGS data. A variant of this map with U.S. counties added is available at Image:Grlakes lawrence map2.png

I, the author of this work, hereby publish it under the following license:
Creative Commons License
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This file is licensed under the Creative Commons Attribution ShareAlike 2.5 License

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