Hey, Shep! Very cool idea. Thanks!
Here's an interesting one I've tried, but it requires a source of compressed air -- this could be from a mechanical wind turbine attached to the shaft of a compressor, or even a bicycle-driven compressor...
It's called an "air-lift pump." You drop a thin air line down the well, with a fine-mist diffuser on the end of the air line. When compressed air is forced down the air line, and out of the diffuser, it enters the well as a fine mist of tiny air bubbles...as a FOAM. Because the fine-bubble air-foam is less dense than the surrounding water, it immediately and rapidly gets forced right up to the top. As the foam spills out the top of the pipe, the bubbles break and the water which formed the walls of the bubbles spills out around the discharge pipe.
Probably not a practical approach for most situations, but an interesting phenomenon to keep in the magic-tricks bag.
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