Hello, and welcome!
Well, where to start?
You can take much of the mystery out of springs and seeps by knowing that water always seeks its own level. The best way to visualize this is to get a clear piece of tubing about 3' long, bend it into a "U" shape, and fill it with water. No matter how you raise or lower the ends or bend the tubing, the water level on both ends are always the same distance from the earth. (level)Knowing that principle and taking gravity into account, you can visualize any water situation.
Theoretically, you can build a little circular dam ever higher around a tiny spring. The level to which it fills is the same level of the source of the spring, or another outlet upstream.