[dsr3]

While not exactly similar to North America continental divide, traversing from the Yangtze river to the North would require traversing some hilly or mountainous area. [0] mentions that there is some uphill location that required pumps.

At this point, there is no feasibility studies on the NA East-West water canal. There is no idea on how efficient it is vs desalination (in terms of energy), its ecological impact, and the required cost for the design and construction.

My main idea is that we should not dismiss the idea and that the Army Engineering Corps should at least do feasibility studies on it*. A proper feasibility studies could unveil the true challenge, benefits, and disadvantage (rather than anecdotal guess) of the water canal.

I am not exactly familiar with the NA Southwest and Southeast but the canal could possibility bring other benefits, such as reducing the heat in the region and opening up new land for farming and irrigation. It could have a trigger a new economic growth while at the same time, reducing flood risk at the Southeast. There is also a possibility that the this could trigger a transfer of wealth (in terms of payment for water, technical skills etc) from the relatively prosperous south West Coast to the Southeast, reducing inequality. Of course, I am not eliminating the possibility that the canal could be a white elephant and trigger untold ecological and natural disaster, but unless a feasibility studies is conducted, we never know.

*US Government, or at least the Federal Entity, are already doing multiple kind of planning and research for dizzying array of contingency. Why should the same mindset is not applied for possible infrastructure development?

[bee_rider]

Why the Army Corps of Engineers? We already a bureau that looks at this kind of stuff.

> The Waterways Journal noted talks to tap the Mississippi River for western states goes back decades. "The Bureau of Reclamation did a thorough study of the idea of pumping Mississippi River water to Arizona in 2012, concluding that the project would cost $14 billion (in 2012 dollars) and take 30 years to complete. As recently as 2021, the Arizona state legislature urged Congress to fund a technological and feasibility study of a diversion dam and pipeline scheme to harvest floodwater from the Mississippi River to replenish the Colorado River."

https://www.dtnpf.com/agriculture/web/ag/blogs/ag-policy-blo...

[space_fountain]

I've taken too much of a deep dive on this. But I can't find any source for that study. The article does link to a study of a canal across Kansas, but that study notes that the unit costs of water, for that much shorter route would be too high for farming to support. It would need to be subsidized by cities and industry and its price tag for a division of half of what this fanciful article puts as the lower bound was 28,276,000,000.

We need to price water properly first, then we can see if it even makes sense to farm in the desert or to ship water out there. At the moment it seems not to, not while we have better places