| water table |
The water table is the upper limit of abundant groundwater. In the vadose zone, above the water table, the interstices between particles of earth are filled by air, or by air and water (with the exception of the capillary fringe). Below it, every available space is saturated with water. A large amount of water within a body of sand or rock below the water table is called an aquifer. ...
Ãâó: en.wikipedia.org/wiki/Water_table
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| water |
The first full three-year compliance period which begins at least 18 months after promulgation.
Ãâó: www.epa.gov/OCEPAterms/iterms.html
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| watershed |
The land area that drains into a stream. An area of land that contributes runoff to one specific delivery point; large watersheds may be composed of several smaller "subsheds", each of which contributes runoff to different locations that ultimately combine at a common delivery point.
Ãâó: www.nsc.org/ehc/glossar2.htm
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| water table |
The level of ground water. The upper surface of the zone of saturation of groundwater above an impermeable layer of soil or rock (through which water cannot move) as in an unconfined aquifer. This level can be very near the surface of the ground or far below it.
Ãâó: www.nsc.org/ehc/glossar2.htm
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| watershed |
The land area that drains water to a particular stream, river, or lake. It is a land feature that can be identified by tracing a line along the highest elevations between two areas on a map, often a ridge. Large watersheds, like the Mississippi River basin contain thousands of smaller watersheds.
Ãâó: www.msnucleus.org/membership/html/jh/earth/diction...
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