Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer Calculator

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Hydrology-And-Irrigation	Groundwater Hydrology ↺
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✖Pumping Rate is the actual volumetric pumping rate.ⓘ Pumping Rate [Q]			+10% -10%
✖Time Period Pumping has been in Progress ⓘ Time Period Pumping has been in Progress [t]			+10% -10%
✖Transmissivity is the rate at which groundwater flows horizontally through an aquifer.ⓘ Transmissivity [T]			+10% -10%
✖Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.ⓘ Storage Coefficient [S]			+10% -10%
✖Distance from Pumping Well to Observation Wellⓘ Distance from Pumping Well to Observation Well [r]			+10% -10%

✖Drawdown in the Aquifer is a term applied to the maximum lowering of the groundwater table caused by pumping or artesian flowⓘ Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer [s_a]

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Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer

Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 500+ more calculators!

Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 500+ more calculators!

< 11 Other formulas that you can solve using the same Inputs

Time at which Steady-Shape Conditions Develop

time at which steady-shape conditions develop=(7200*Distance from Pumping Well to Observation Well^2*Storage Coefficient)/Transmissivity GO

Storage Coefficient when Time at which Steady-Shape Conditions Develop is Given

Storage Coefficient=Transmissivity*time at which steady-shape conditions develop/7200*Distance from Pumping Well to Observation Well^2 GO

Transmissivity when Time at which Steady-Shape Conditions Develop is Given

Transmissivity=7200*Distance from Pumping Well to Observation Well^2*Storage Coefficient/time at which steady-shape conditions develop GO

Transmissivity When Storage Coefficient is Given from Theis Equation

Transmissivity=(Storage Coefficient*Distance from Pumping Well to Observation Well^2)/(4*Time*Varying Dimensionless Group ) GO

Equation for the Varying Dimensionless Group u in Theis Equation

Varying Dimensionless Group =(Distance from Pumping Well to Observation Well^2*Storage Coefficient)/4*Transmissivity*Time GO

Theis Equation to Determine Storage Coefficient

Storage Coefficient=(4*Transmissivity*Time*Varying Dimensionless Group )/Distance from Pumping Well to Observation Well^2 GO

Quantity of Water when Transmissivity is Given

Quantity of water=Transmissivity*Large Width of Aquifer*Hydraulic Gradient GO

Storage Coefficient From Theis Equation of Transmissivity

Storage Coefficient=(Pumping Rate*Well Function of u)/Transmissivity*4*pi GO

Theis Equation to Determine Transmissivity

Transmissivity=(Pumping Rate*Well Function of u)/4*pi*Storage Coefficient GO

Thickness of Aquifer when Transmissivity is Given

Aquifer Thickness at Midpoint =Transmissivity/Hydraulic Conductivity GO

Transmissivity Derived from the Time-Drawdown Graphs

Transmissivity=(2.3*Pumping Rate)/4*pi*Drawdown Across One Log Cycle GO

< 2 Other formulas that calculate the same Output

Drawdown in the Aquifer when Well Efficiency is Given

Drawdown in the Aquifer=Well Efficiency*Drawdown Inside the Well GO

Drawdown in the Aquifer when Total Drawdown is Given

Drawdown in the Aquifer=Total Drawdown-Well Loss GO

Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer Formula

Drawdown in the Aquifer=Pumping Rate*Time Period Pumping has been in Progress /Transmissivity*Storage Coefficient*Distance from Pumping Well to Observation Well^2
s<sub>a</sub>=Q*t/T*S*r^2

More formulas

Total Drawdown in a Pumping Well GO

Total Drawdown in a Pumping Well expressed in terms of Factors related to Hydraulic Characteristics GO

Drawdown in the Aquifer when Total Drawdown is Given GO

Well Loss when Total Drawdown is Given GO

What is Drawdown ?

Drawdown is a term applied to the maximum lowering of the groundwater table caused by pumping or artesian flow. It is measured as the difference between the initial level of water in a well before pumping, and the static, or stabilized, level of water after a long period of pumping

How to Calculate Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer?

Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer calculator uses Drawdown in the Aquifer=Pumping Rate*Time Period Pumping has been in Progress /Transmissivity*Storage Coefficient*Distance from Pumping Well to Observation Well^2 to calculate the Drawdown in the Aquifer, The Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer is a change in groundwater level due to an applied stress. Drawdown in the Aquifer and is denoted by s_a symbol.

How to calculate Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer using this online calculator? To use this online calculator for Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer, enter Pumping Rate (Q), Time Period Pumping has been in Progress (t), Transmissivity (T), Storage Coefficient (S) and Distance from Pumping Well to Observation Well (r) and hit the calculate button. Here is how the Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer calculation can be explained with given input values -> 8.640E+9 = 2*3000/0.00277777777777778*1*2^2.

FAQ

What is Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer?

The Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer is a change in groundwater level due to an applied stress and is represented as s_a=Q*t/T*S*r^2 or Drawdown in the Aquifer=Pumping Rate*Time Period Pumping has been in Progress /Transmissivity*Storage Coefficient*Distance from Pumping Well to Observation Well^2. Pumping Rate is the actual volumetric pumping rate, Time Period Pumping has been in Progress , Transmissivity is the rate at which groundwater flows horizontally through an aquifer, Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer and Distance from Pumping Well to Observation Well.

How to calculate Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer?

The Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer is a change in groundwater level due to an applied stress is calculated using Drawdown in the Aquifer=Pumping Rate*Time Period Pumping has been in Progress /Transmissivity*Storage Coefficient*Distance from Pumping Well to Observation Well^2. To calculate Drawdown in an Aquifer caused by Pumping at any Point in the Aquifer, you need Pumping Rate (Q), Time Period Pumping has been in Progress (t), Transmissivity (T), Storage Coefficient (S) and Distance from Pumping Well to Observation Well (r). With our tool, you need to enter the respective value for Pumping Rate, Time Period Pumping has been in Progress , Transmissivity, Storage Coefficient and Distance from Pumping Well to Observation Well and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Drawdown in the Aquifer?

In this formula, Drawdown in the Aquifer uses Pumping Rate, Time Period Pumping has been in Progress , Transmissivity, Storage Coefficient and Distance from Pumping Well to Observation Well. We can use 2 other way(s) to calculate the same, which is/are as follows -

Drawdown in the Aquifer=Total Drawdown-Well Loss
Drawdown in the Aquifer=Well Efficiency*Drawdown Inside the Well

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