Where can water be found underground?

Some water soaks into the soil to become soil water. Some soil water is used by plants and the rest moves through the soil into the underground rocks. Soil water and groundwater form a very small amount of Earth's surface. Many rocks have tiny spaces, where water passes down until it reaches a layer of solid rock. Then the water begins to fill the spaces and cracks in the rocks.

Questions:

1. Where does groundwater collect?
2. Describe the process of how water reaches the underground.
3. Is groundwater more or less than water found in rivers and lakes?

References:

• Baptiste, Prentice. Daniel, Lucy. Hackett, Jay. Moyer, Richard. Stryker, Pamela. Vasquez, Pamela(2002). Science Water Water Everywhere. New York McGraw Hill
• http://web.viu.ca/geoscape/water_from_underground.htm