How do springs originate at the top of the hills and how do they acquire such volume of water?

Question

One explanation that I found was rainfall but it is not apparent that rainfall could contribute to such volume of water.

In: Geology

Answer 1

Soak a sponge, and put it on a table. Put a plastic sheet over it. Soak a second sponge, and stack it over the plastic sheet. Then drip water onto the top sponge, until a drip leaks out the bottom and flows down the plastic sheet. That’s a spring.