The groundwater moves very slow and percolates through pores, spaces, and other openings in the rocks. The movement of groundwater is measured in meters or centimeters per day. Although rates of tens of meters per day have been measured occasionally, while
1. Openings in the Rocks
2. Porosity
3. Permeability
4. Darcy’s Law of Groundwater Motion
5. Specific Yield and Specific Retention