You are missing the point, which was a reply to a question about someone's claim that keyline cultivation moves water uphill. It does not and I explained what it does do and the nature of the confusion.
I said that water does not flow uphill without application of external energy. The EXAMPLE was a pump. I could have given as an example a tsunami hitting an island, indeed any wave as the water rises, the creation of clouds, the example you gave, etc. Someone else gave the one exception I didn't think of, which is capillary action. In soil, this will move water laterally about 2 feet in soil with a strong clay component or about one foot in sand. So the diameter served by a drip point, moving water laterally, is 2 to 4 feet, depending upon the composition of the water. Of course, this is utterly irrelevant to answering the original post about keyline moving water to ridges from valleys.
Dan Hemenway
In a message dated 2/6/08 11:45:41 AM, cory8570@yahoo.com writes:
Water does observably go uphill in nature via a narrowing channel, etc. There are natural patterns that force water uphill at least for short distances. It depends on the vectors and forces applied. One could call a running stream a "pump" but I would call it a running stream. You can use the natural force of falling water and compression to defy gravity. As to how practical or useful this may be, I will leave that to people with more experience. I recall reading about an ancient irrigation system that used this principle, but I don't recall details. Anybody else have any data on such systems?
Cory
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