Drawdown in Groundwater Hydrology Formulas

Drawdown is the difference in height between the natural water table (or potentiometric surface) and the water level in a well after groundwater has been extracted. And is denoted by h. Drawdown is usually measured using the Meter for Length. Note that the value of Drawdown is always negative.

Groundwater Hydrology formulas that make use of Drawdown

fxDrawdown given Piezometric HeadGo

fxInitial Constant Piezometric Head given DrawdownGo

FAQ

What is the Drawdown?

Drawdown is the difference in height between the natural water table (or potentiometric surface) and the water level in a well after groundwater has been extracted. Drawdown is usually measured using the Meter for Length. Note that the value of Drawdown is always negative.

Can the Drawdown be negative?

Yes, the Drawdown, measured in Length can be negative.

What unit is used to measure Drawdown?

Drawdown is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Drawdown can be measured.

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