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Surface& Groundwater
vocabulary
Term | Definition |
---|---|
Water vapor | water in the form of gas. – Invisible and not the same thing as steam |
Groundwater | Water that fills the cracks and spaces in underground rock layers |
Irrigation | supplying water to dry land in order to make the land suitable for growing crops |
Tributary | Smaller streams and rivers that feed into a main river or larger body of water. |
Watershed | The LAND AREA that supplies water to a river system (drainage basins) |
Divide | Place where one watershed (land area) is SEPARATED from another (often a mountain range) |
Artificial Levee | constructed along edges of water to make the bank taller & prevent flooding. |
Natural Levee | Ridge made of up sediment deposit along a river bank that builds up after repeated flooding |
Reservoir | A lake that stores water for human use |
Eutrophication | process that causes a lake or pond to dry up because excess nutrients build up in a lake over many years. |
Pore | Different sized SPACES between the particles of soil and rock |
Permeable | A material that allows water to easily pass through or permeate. Usually close to the surface Ex: Sand or Gravel |
Impermeable | A material that water CANNOT PASS THROUGH easily – these things are usually deeper under the surface. Ex: Clay and Granite |
Saturated zone | The area of permeable rock or soil that is totally filled with water. |
Water table | The top of the saturated zone. The water level |
Unsaturated zone | Layer of rocks & soil ABOVE the water table- not completely full of water |
Aquifer | Any underground layer of rock that holds water |
Spring | Occurs when the water table meets the ground surface – groundwater bubbles or flows out of cracks in the rock. |
Recharge | NEW water that enters the aquifer from the surface. Replenishes and refills the aquifer. |
Artesian well | well in which water rises on its own because of the pressure within the aquifer. Does not require a pump. |
Wetland | Area of land covered by a shallow layer of water during some or all of the year. |