http://www.youtube.com/watch?v=OiVwfAPSEH8

Relative volume of the ocean and Earth.

Where is Earth’s water?

World Distribution of Water Ocean 97.2% Glaciers & other Ice 2.16% Groundwater 0.62% Lakes – freshwater 0.009% Lakes – saline 0.008% Soil Moisture 0.001% Atmosphere 0.001% Rivers 0.001%

How does population growth affect water use

Development of Contamination in Groundwater

Flowing or Artesian Well Development

Porosity: The percent of a material’s volume that is pore space.                                                                     Porosity: The percent of a material’s volume that is pore space.

The Water Table Water table: the surface separating the vadose zone from the saturated zone. Measured using water level in well Fig. 11.1