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Level 13

Chapter 13


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Groundwater
Water that is between layers of rock underground.
floodplain
floodplain
Zone of saturation
Spaces that are completely filled with water
Water Table
Top of the groundwater zone
Aquifers
Underground caverns and layers of sand that have groundwater flowing through them
Surface Water
Water on the surface of the Earth
Surface Runoff
Water that does not infiltrate the ground or evaporate
Watershed
the land from which surface water drains into
Resevoir
Artificial lake
Dam
Structure built across a river to control the flow
Desalination
Removing dissolved salts from ocean water
Drought
a period in which precipitation is at least 70% lower than usual
Reliable Surface Runoff
The amount of surface runoff (1/3rd) that we can count as for a source of freshwater