Total Drawdown in Unconfined Aquifer Formulas

The Total Drawdown is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test. And is denoted by s_t. Total Drawdown is usually measured using the Meter for Length. Note that the value of Total Drawdown is always negative.

Formulas to find Total Drawdown in Unconfined Aquifer

fxDrawdown at Well given Radius of InfluenceGo

Unconfined Aquifer formulas that make use of Total Drawdown

fxDischarge given Length of StrainerGo

fxCoefficient of Permeability given Radius of InfluenceGo

fxDepth of Water in Well given Drawdown Value measured at WellGo

fxRadius of Well given Discharge and Length of StrainerGo

fxThickness of Aquifer given Drawdown Value measured at WellGo

List of variables in Unconfined Aquifer formulas

fx Radius of Influence Go

fx Coefficient of Permeability at Drawdown Go

FAQ

What is the Total Drawdown?

The Total Drawdown is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test. Total Drawdown is usually measured using the Meter for Length. Note that the value of Total Drawdown is always negative.

Can the Total Drawdown be negative?

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

What unit is used to measure Total Drawdown?

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

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