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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. Check FAQs
R=r10(QsQfe)b2.3r
R - Radius of Influence?r - Radius of Well?Qs - Discharge by Spherical Flow?Qfe - Discharge for Fully Penetrating Gravity Well?b - Aquifer Thickness?

Radius of Influence given Discharge by Spherical Flow with Base 10 Example

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Here is how the Radius of Influence given Discharge by Spherical Flow with Base 10 equation looks like with Values.

Here is how the Radius of Influence given Discharge by Spherical Flow with Base 10 equation looks like with Units.

Here is how the Radius of Influence given Discharge by Spherical Flow with Base 10 equation looks like.

3.9047Edit=2.94Edit10(0.34Edit6.12Edit)15Edit2.32.94Edit
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Radius of Influence given Discharge by Spherical Flow with Base 10 Solution

Follow our step by step solution on how to calculate Radius of Influence given Discharge by Spherical Flow with Base 10?

FIRST Step Consider the formula
R=r10(QsQfe)b2.3r
Next Step Substitute values of Variables
R=2.94m10(0.34m³/s6.12m³/s)15m2.32.94m
Next Step Prepare to Evaluate
R=2.9410(0.346.12)152.32.94
Next Step Evaluate
R=3.90467625375336m
LAST Step Rounding Answer
R=3.9047m

Radius of Influence given Discharge by Spherical Flow with Base 10 Formula Elements

Variables
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.
Discharge by Spherical Flow
Discharge by Spherical Flow refers to when water moves radially towards the well in a three-dimensional pattern, typical in confined aquifers or near partially penetrating wells.
Symbol: Qs
Measurement: Volumetric Flow RateUnit: m³/s
Note: Value should be greater than 0.
Discharge for Fully Penetrating Gravity Well
Discharge for Fully Penetrating Gravity Well refers to the volume of water extracted from an unconfined aquifer where the well reaches the entire thickness of the aquifer.
Symbol: Qfe
Measurement: Volumetric Flow RateUnit: m³/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.

Other Formulas to find Radius of Influence

​Go Radius of Influence given Ratio of Discharge
R=rexp(QsQratiobr)
​Go Radius of Influence given Ratio of Discharge with Base 10
R=r10QsQratiob2.3r
​Go Radius of Influence given Discharge by Spherical Flow
R=rexp((QsQfe)br)

Other formulas in Spherical Flow in a Well category

​Go Discharge due to Spherical Flow in Well
Qs=2πKr(H-hw)
​Go Coefficient of Permeability given Discharge due to Spherical Flow in Well
K=Qs2πr(H-hw)
​Go Radius of Well given Discharge due to Spherical Flow in Well
r=Qs2πK(H-hw)
​Go Thickness of Aquifer given Discharge due to Spherical Flow in Well
H=hw+(Qs2πKr)

How to Evaluate Radius of Influence given Discharge by Spherical Flow with Base 10?

Radius of Influence given Discharge by Spherical Flow with Base 10 evaluator uses Radius of Influence = Radius of Well*10^(((Discharge by Spherical Flow/Discharge for Fully Penetrating Gravity Well)*Aquifer Thickness)/(2.3*Radius of Well)) to evaluate the Radius of Influence, Radius of Influence given Discharge by Spherical Flow with Base 10 formula is defined as a measure of the radial distance from the pumping well to the point where the drawdown is negligible, used to determine the area of influence of a pumping well in a confined aquifer. Radius of Influence is denoted by R symbol.

How to evaluate Radius of Influence given Discharge by Spherical Flow with Base 10 using this online evaluator? To use this online evaluator for Radius of Influence given Discharge by Spherical Flow with Base 10, enter Radius of Well (r), Discharge by Spherical Flow (Qs), Discharge for Fully Penetrating Gravity Well (Qfe) & Aquifer Thickness (b) and hit the calculate button.

FAQs on Radius of Influence given Discharge by Spherical Flow with Base 10

What is the formula to find Radius of Influence given Discharge by Spherical Flow with Base 10?
The formula of Radius of Influence given Discharge by Spherical Flow with Base 10 is expressed as Radius of Influence = Radius of Well*10^(((Discharge by Spherical Flow/Discharge for Fully Penetrating Gravity Well)*Aquifer Thickness)/(2.3*Radius of Well)). Here is an example- 3.904676 = 2.94*10^(((0.34/6.12)*15)/(2.3*2.94)).
How to calculate Radius of Influence given Discharge by Spherical Flow with Base 10?
With Radius of Well (r), Discharge by Spherical Flow (Qs), Discharge for Fully Penetrating Gravity Well (Qfe) & Aquifer Thickness (b) we can find Radius of Influence given Discharge by Spherical Flow with Base 10 using the formula - Radius of Influence = Radius of Well*10^(((Discharge by Spherical Flow/Discharge for Fully Penetrating Gravity Well)*Aquifer Thickness)/(2.3*Radius of Well)).
What are the other ways to Calculate Radius of Influence?
Here are the different ways to Calculate Radius of Influence-
  • Radius of Influence=Radius of Well*exp((Ratio of Discharge*Aquifer Thickness)/Radius of Well)OpenImg
  • Radius of Influence=Radius of Well*10^((Ratio of Discharge*Aquifer Thickness)/(2.3*Radius of Well))OpenImg
  • Radius of Influence=Radius of Well*exp(((Discharge by Spherical Flow/Discharge for Fully Penetrating Gravity Well)*Aquifer Thickness)/Radius of Well)OpenImg
Can the Radius of Influence given Discharge by Spherical Flow with Base 10 be negative?
No, the Radius of Influence given Discharge by Spherical Flow with Base 10, measured in Length cannot be negative.
Which unit is used to measure Radius of Influence given Discharge by Spherical Flow with Base 10?
Radius of Influence given Discharge by Spherical Flow with Base 10 is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Radius of Influence given Discharge by Spherical Flow with Base 10 can be measured.
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