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Water balance
From Wikipedia, the free encyclopedia
Note: The Water Balance method is a winding mechanism used in mining
In hydrology, the water balance is an equation which describes how water can be accounted for within a drainage basin.
The equation is P = Q + E ± S
Where
P= Precipitation
Q= Runoff
E= Evapotranspiration
S= Storage (in soil or the bedrock)
The water balance can be used to manage water supply and suggest where there may be water shortages. It is also used in irrigation, flood control and pollution control.
The water balance can be illustrated using a water balance graph which plots levels of precipitation and evapotranspiration often on a monthly scale.
Several Monthly Water Balance Models had been developed for several conditions and purposes.
