Mithila Muthamma PA
Coorg Institute of Technology (CIT), Coorg
Mithila Muthamma PA has created this Calculator and 300+ more calculators!
Chandana P Dev
NSS College of Engineering (NSSCE), Palakkad
Chandana P Dev has verified this Calculator and 300+ more calculators!

2 Other formulas that you can solve using the same Inputs

Flow Through any Square from Darcy's law for Ground Water Flow Nets
Quantity of water=Hydraulic Conductivity*Distance Between Flow Lines*Aquifer Thickness at Midpoint *(Difference in Head Between Equipotential Lines/Distance Between Equipotential Lines) GO
Transmissivity of Aquifer
Transmissivity=Hydraulic Conductivity*Aquifer Thickness at Midpoint GO

Observed Drawdown in the Unconfined Aquifer Formula

Possible Drawdown in Confined Aquifer=Observed Drawdown in the Unconfined Aquifer-(Observed Drawdown in the Unconfined Aquifer^2/2*Aquifer Thickness at Midpoint )
s'=s-(s^2/2*b)
More formulas
Natural Discharge when Discharge Exceeds Recharge GO
Natural Discharge When Recharge Exceeds Discharge GO
Equation for Recharge When Recharge Exceeds Discharge GO
Balance Equation When Reduction in Natural Discharge Equals the Rate of Withdrawal GO
Equation for Rate of Natural Discharge When the Cone of Depression Ceases to Expand GO
Reduced Ground-water When Discharge Exceeds Recharge GO
Equation for Recharge When Discharge Exceeds Recharge GO
Equation for Ground-water Storage When Recharge Exceeds Discharge GO
Equation for the Varying Dimensionless Group u in Theis Equation GO

What is Unconfined Aquifer?

An Unconfined Aquifer is an aquifer whose upper water surface (water table) is at atmospheric pressure, and thus is able to rise and fall.

How to Calculate Observed Drawdown in the Unconfined Aquifer?

Observed Drawdown in the Unconfined Aquifer calculator uses Possible Drawdown in Confined Aquifer=Observed Drawdown in the Unconfined Aquifer-(Observed Drawdown in the Unconfined Aquifer^2/2*Aquifer Thickness at Midpoint ) to calculate the Possible Drawdown in Confined Aquifer, Observed Drawdown in the Unconfined Aquifer can be used for when the effect of dewatering of the aquifer can be eliminated. Possible Drawdown in Confined Aquifer and is denoted by s' symbol.

How to calculate Observed Drawdown in the Unconfined Aquifer using this online calculator? To use this online calculator for Observed Drawdown in the Unconfined Aquifer, enter Observed Drawdown in the Unconfined Aquifer (s) and Aquifer Thickness at Midpoint (b) and hit the calculate button. Here is how the Observed Drawdown in the Unconfined Aquifer calculation can be explained with given input values -> -624 = 6-(6^2/2*35).

FAQ

What is Observed Drawdown in the Unconfined Aquifer?
Observed Drawdown in the Unconfined Aquifer can be used for when the effect of dewatering of the aquifer can be eliminated and is represented as s'=s-(s^2/2*b) or Possible Drawdown in Confined Aquifer=Observed Drawdown in the Unconfined Aquifer-(Observed Drawdown in the Unconfined Aquifer^2/2*Aquifer Thickness at Midpoint ). Observed Drawdown in the Unconfined Aquifer and Aquifer Thickness at Midpoint between Equipotential lines.
How to calculate Observed Drawdown in the Unconfined Aquifer?
Observed Drawdown in the Unconfined Aquifer can be used for when the effect of dewatering of the aquifer can be eliminated is calculated using Possible Drawdown in Confined Aquifer=Observed Drawdown in the Unconfined Aquifer-(Observed Drawdown in the Unconfined Aquifer^2/2*Aquifer Thickness at Midpoint ). To calculate Observed Drawdown in the Unconfined Aquifer, you need Observed Drawdown in the Unconfined Aquifer (s) and Aquifer Thickness at Midpoint (b). With our tool, you need to enter the respective value for Observed Drawdown in the Unconfined Aquifer and Aquifer Thickness at Midpoint and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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