Of course. It comes from sending into the Atlantic Ocean, via the St. Laurence Sea Way 90% of its current flow.
And yet even though all that water is "wasted" there have been years of water level depression in the Great Lakes, where water levels dropped by several feet. So clearly it isn't as simple as "just use some of the water they waste; they will just waste less." It doesn't even work _now_ and that's without taking a lot of water away from Lake Superior.
As I mentioned before, the local populace is aware of this desire for their water, which is where the Great Lakes Compact came from. They will protect it fiercely, since they know they are at risk of losing it to greed, evaporation and the termination of the Long Lac and Okogi diversions (Canada wants that water too.) A few excerpts from the compact (I will make them short this time)
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The waters of the Great Lakes are, for the most part, a nonrenewable resource. They are composed of numerous aquifers (groundwater) that have filled with water over the centuries, waters that flow in the tributaries of the Great Lakes, and waters that fill the lakes themselves. Although the total volume in the lakes is vast, on average less than 1 percent of the waters of the Great Lakes is renewed annually by precipitation, surface water runoff, and inflow from groundwater sources.
A diversion is any transfer of water across watershed boundaries through a man-made pipeline or canal. Diversions may transfer water in or out of the Great Lakes basin, or between the watersheds of different lakes or rivers within the basin. While the impacts of existing diversions on lake levels are minor, they alter the natural flow of the Great Lakes and water returned from diversions may be of a different quality than when it was withdrawn. . . .
The Great Lakes – St. Lawrence River Basin Water Resources Compact (the Compact) bans large-scale diversions from the Great Lakes and establishes a consensus-based process for managing the region’s waters. It also is a catalyst for state and regional water conservation measures. Additionally, it sets uniform standards for monitoring new water withdrawal proposals within the basin.This formal, interstate compact has the force of a federal law, with standing in federal court. It was signed by all eight Great Lakes state Governors in December 2005. It then began a journey that included being passed by each of the eight state legislatures, ratified by the United States Congress, and finally signed into law by the President on October 3, 2008.
The Compact is an agreement among the eight Great Lakes states to prevent diversions and withdrawals that would harm the ecosystem created by the waters of the Great Lakes. It is rooted in history and a long tradition of managing the lakes cooperatively. Importantly, the Compact treats groundwater and surface water as one system subject to the same standard, and also includes the following statements about the Waters of the Great Lakes:
. . . Future diversions and consumptive uses have the potential to significantly impact the environment, economy, and welfare of the region.
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The Great lakes lose a small fraction of their inflow via evaporation, essentially none in winter.
That used to be true. The climate is warming, so the ice that used to prevent evaporation is often not present. (Last winter, of course, being a significant exception.) Most of the water level problems in Superior in 2012/2013 were due to evaporation.
I would call not sending that now wasted fresh water to the US's SW "stupid" not smart
I would call trying to grow food in a desert stupid.
On its own, California would be the world’s ninth-largest agricultural economy, according to a University of California at Davis study. Shifts in its production reverberate globally, said Dan Sumner, another agricultural economist at the school. ... {California is} now the U.S.’s top dairy producer and grows half the country’s fruits, vegetables and nuts. "
As we learn to take better care of our planet, that may have to change.