Ocean tides are very observable, underground water levels not so much. We stand on shore looking at the stars watching waves make high or low tide marks. we hug and kiss and talk about the moon. The point is the earth has a constant movement of water both above and below surface.
Measuring water in a well tells a lot about Earth’s balance and Galactic harmony. It is not only our moon but all the objects in our gravitational system which influence the spread of water.
The measurement derived from sussing Phi from the distance between the two Solstice levels creates a unit which is in harmony with the cosmos. A Universal cubit.