Obviously this wouldn’t relieve the issues caused by low snowpack and decreasing precipitation, but it could supplement the water used for everyday living or agriculture during times of drought right?
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This is not a bad question, but it does underestimate exactly how much water humans need, and how heavy it is.
The average domestic user needs 250L of potable water every single day. If you’re going to provide water to lots of users, you’re going to need a very big pipe.
For example, there is a small nation in Africa called Lesotho, which is entirely surrounded by South Africa. Lesotho has mountains with lakes in them, and they sell water to South Africa. The tunnel that takes water from Lesotho into South Africa is 5 m in diameter and 38 km long. It’s about an 8 billion dollar project, and that hasn’t exactly solved South Africa’s water problems.
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