And Moses lifted up his hand,
And with his rod he smote the rock twice:
And the water came out abundantly:
And the congregation drank and their beasts also
- Deuteronomy 6:11
Porosity
Permeability
aquifer
aquiclude
zone of aeration
zone of saturation
hydraulic gradient
springs
cone of depression
salt water incursion
confined aquifer
artesian well
contamination
sinkholes
karst topography
geodes
Useful links: