This is to prevent arid states from looking at the five Great Lakes as their reservoirs.
FORBES: What Turkey, Football and Beer Have in Common (It's Not Just Thanksgiving)
The basin is a large depression in the surface of the land spanning from Minnesota to New York state and including the five Great Lakes: Michigan, Huron, Erie, Superior and Ontario.
NPR: Governors Meet on Access to Great Lakes
It's divided into five regions: West, Midwest, North East, South and the Great Lakes.
BBC: A targeted message from Obama 2012
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