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The initial piezometric surface refers to the level at which groundwater naturally stands in a confined aquifer before any pumping or external influence. Check FAQs
H=hw+(Qtlog(R2rB,e)2πKb)
H - Initial Piezometric Surface?hw - Depth of Water?Qt - Discharge by Each Well when Two Well Interference?R - Radius of Influence?r - Radius of Well?B - Distance Between Wells?K - Coefficient of Permeability?b - Aquifer Thickness?π - Archimedes' constant?

Thickness of Aquifer from Impermeable Layer when Interference among Well is Present Example

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Here is how the Thickness of Aquifer from Impermeable Layer when Interference among Well is Present equation looks like with Values.

Here is how the Thickness of Aquifer from Impermeable Layer when Interference among Well is Present equation looks like with Units.

Here is how the Thickness of Aquifer from Impermeable Layer when Interference among Well is Present equation looks like.

19.9955Edit=2.44Edit+(12.26Editlog(100Edit22.94Edit2.93Edit,e)23.14160.105Edit15Edit)
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Thickness of Aquifer from Impermeable Layer when Interference among Well is Present Solution

Follow our step by step solution on how to calculate Thickness of Aquifer from Impermeable Layer when Interference among Well is Present?

FIRST Step Consider the formula
H=hw+(Qtlog(R2rB,e)2πKb)
Next Step Substitute values of Variables
H=2.44m+(12.26m³/slog(100m22.94m2.93m,e)2π0.105cm/s15m)
Next Step Substitute values of Constants
H=2.44m+(12.26m³/slog(100m22.94m2.93m,e)23.14160.105cm/s15m)
Next Step Convert Units
H=2.44m+(12.26m³/slog(100m22.94m2.93m,e)23.14160.001m/s15m)
Next Step Prepare to Evaluate
H=2.44+(12.26log(10022.942.93,e)23.14160.00115)
Next Step Evaluate
H=19.9955457366892m
LAST Step Rounding Answer
H=19.9955m

Thickness of Aquifer from Impermeable Layer when Interference among Well is Present Formula Elements

Variables
Constants
Functions
Initial Piezometric Surface
The initial piezometric surface refers to the level at which groundwater naturally stands in a confined aquifer before any pumping or external influence.
Symbol: H
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Depth of Water
Depth of Water is the depth in the well measured above the impermeable layer.
Symbol: hw
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Discharge by Each Well when Two Well Interference
Discharge by Each Well when Two Well Interference is the sum of the individual well rates, adjusted for interference.
Symbol: Qt
Measurement: Volumetric Flow RateUnit: m³/s
Note: Value should be greater than 0.
Radius of Influence
The radius of influence is the distance from a pumping well to the point where the drawdown, or lowering of the water table, becomes negligible.
Symbol: R
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Radius of Well
The radius of well refers to the horizontal distance from the center of the well to its inner wall, essentially the well’s radius.
Symbol: r
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Distance Between Wells
Distance Between Wells refers to the center to center distance between the well.
Symbol: B
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Coefficient of Permeability
Coefficient of Permeability refers to the ease with which water can flow through the aquifer's pore spaces.
Symbol: K
Measurement: SpeedUnit: cm/s
Note: Value should be greater than 0.
Aquifer Thickness
Aquifer Thickness (at Midpoint between Equipotential lines) or otherwise is the thickness of aquifer in which the pore spaces of rock forming the aquifer may or may not be with water.
Symbol: b
Measurement: LengthUnit: m
Note: Value can be positive or negative.
Archimedes' constant
Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.
Symbol: π
Value: 3.14159265358979323846264338327950288
log
Logarithmic function is an inverse function to exponentiation.
Syntax: log(Base, Number)

Other Formulas to find Initial Piezometric Surface

​Go Thickness of Aquifer from Impermeable Layer when Interference among Three Well is Present
H=hw+(Qthlog(R3rB2,e)2πKb)

Other formulas in Interference Among Wells category

​Go Discharge through Each Well when Interference among Well is Present
Qt=2πKb(H-hw)log(R2rB,e)
​Go Coefficient of Permeability when Interference among Well is Present
K=Qtlog(R2rB,e)2πb(H-hw)

How to Evaluate Thickness of Aquifer from Impermeable Layer when Interference among Well is Present?

Thickness of Aquifer from Impermeable Layer when Interference among Well is Present evaluator uses Initial Piezometric Surface = Depth of Water+((Discharge by Each Well when Two Well Interference*log((Radius of Influence^2)/(Radius of Well*Distance Between Wells),e))/(2*pi*Coefficient of Permeability*Aquifer Thickness)) to evaluate the Initial Piezometric Surface, Thickness of Aquifer from Impermeable Layer when Interference among Well is Present formula is defined as a measure of the distance from the impermeable layer to the bottom of the aquifer when there is interference among wells, which is essential in understanding the flow of fluids in wells and aquifers. Initial Piezometric Surface is denoted by H symbol.

How to evaluate Thickness of Aquifer from Impermeable Layer when Interference among Well is Present using this online evaluator? To use this online evaluator for Thickness of Aquifer from Impermeable Layer when Interference among Well is Present, enter Depth of Water (hw), Discharge by Each Well when Two Well Interference (Qt), Radius of Influence (R), Radius of Well (r), Distance Between Wells (B), Coefficient of Permeability (K) & Aquifer Thickness (b) and hit the calculate button.

FAQs on Thickness of Aquifer from Impermeable Layer when Interference among Well is Present

What is the formula to find Thickness of Aquifer from Impermeable Layer when Interference among Well is Present?
The formula of Thickness of Aquifer from Impermeable Layer when Interference among Well is Present is expressed as Initial Piezometric Surface = Depth of Water+((Discharge by Each Well when Two Well Interference*log((Radius of Influence^2)/(Radius of Well*Distance Between Wells),e))/(2*pi*Coefficient of Permeability*Aquifer Thickness)). Here is an example- 19.99555 = 2.44+((12.26*log((100^2)/(2.94*2.93),e))/(2*pi*0.00105*15)).
How to calculate Thickness of Aquifer from Impermeable Layer when Interference among Well is Present?
With Depth of Water (hw), Discharge by Each Well when Two Well Interference (Qt), Radius of Influence (R), Radius of Well (r), Distance Between Wells (B), Coefficient of Permeability (K) & Aquifer Thickness (b) we can find Thickness of Aquifer from Impermeable Layer when Interference among Well is Present using the formula - Initial Piezometric Surface = Depth of Water+((Discharge by Each Well when Two Well Interference*log((Radius of Influence^2)/(Radius of Well*Distance Between Wells),e))/(2*pi*Coefficient of Permeability*Aquifer Thickness)). This formula also uses Archimedes' constant and Logarithmic Inverse Function function(s).
What are the other ways to Calculate Initial Piezometric Surface?
Here are the different ways to Calculate Initial Piezometric Surface-
  • Initial Piezometric Surface=Depth of Water+((Discharge by Each Well at Three Well Interference*log((Radius of Influence^3)/(Radius of Well*Distance Between Wells^2),e))/(2*pi*Coefficient of Permeability*Aquifer Thickness))OpenImg
Can the Thickness of Aquifer from Impermeable Layer when Interference among Well is Present be negative?
No, the Thickness of Aquifer from Impermeable Layer when Interference among Well is Present, measured in Length cannot be negative.
Which unit is used to measure Thickness of Aquifer from Impermeable Layer when Interference among Well is Present?
Thickness of Aquifer from Impermeable Layer when Interference among Well is Present is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Thickness of Aquifer from Impermeable Layer when Interference among Well is Present can be measured.
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