Hanish water WaterCrest, Owner'S Manual

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The water table is the
top of the zone of saturation
and
intersects the land
surface at lakes and streams.
Above the water table lies
the zone of aeration and soil
moisture belt, which supplies
much of the water needed by
plants. (Image by Hailey
King, NASA GSFC.)
Precipitation
Precipitation is the result when the tiny condensation particles grow too large,
through collision and coalesce, for the rising air to support, and thus fall to the
earth.
Runoff
Runoff occurs when there is excessive precipitation and the ground is saturated
(cannot absorb anymore water). This runoff flows into streams and rivers and
eventually back into the sea.
Evaporation of this runoff into the atmosphere begins the hydrologic cycle over
again. Some of the water percolates into the soil and into the ground water only
to be drawn into plants again for transpiration to take place.
Credit: EPA, UNEP, USGS, NASA, University of Maryland, National Weather Service