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Aquifer Constant Formula

GoAquifer Constant given Drawdown in Well Formula

GoAquifer Constant given Difference in Drawdowns at Two Wells Formula

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Aquifer Constant refers to the product of the hydraulic conductivity (K) and the thickness (b) of an aquifer and also known as coefficient of transmissibility. Check FAQs

T = \frac{Q w \cdot \log ((\frac{r 2}{r 1}), 10)}{2.72 \cdot (s 1 - s 2)}

T - Aquifer Constant?Q_w - Discharge?r₂ - Radial Distance at Observation Well 2?r₁ - Radial Distance at Observation Well 1?s₁ - Drawdown in Well 1?s₂ - Drawdown in Well 2?

Aquifer Constant Example

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Here is how the Aquifer Constant equation looks like with Values.

Here is how the Aquifer Constant equation looks like with Units.

Here is how the Aquifer Constant equation looks like.

24.6476 = \frac{0.911 \cdot \log ((\frac{10}{1.07}), 10)}{2.72 \cdot (2.15 - 2.136)}

24.6476 = \frac{0.911m³/s \cdot \log ((\frac{10m}{1.07m}), 10)}{2.72 \cdot (2.15m - 2.136m)}

24.6476 = \frac{0.911 \cdot \log ((\frac{10}{1.07}), 10)}{2.72 \cdot (2.15 - 2.136)}

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Aquifer Constant Solution

Follow our step by step solution on how to calculate Aquifer Constant?

FIRST Step Consider the formula

T = \frac{Q w \cdot \log ((\frac{r 2}{r 1}), 10)}{2.72 \cdot (s 1 - s 2)}

Next Step Substitute values of Variables

∴

T = \frac{0.911m³/s \cdot \log ((\frac{10m}{1.07m}), 10)}{2.72 \cdot (2.15m - 2.136m)}

Next Step Prepare to Evaluate

∴

T = \frac{0.911 \cdot \log ((\frac{10}{1.07}), 10)}{2.72 \cdot (2.15 - 2.136)}

Next Step Evaluate

∴

T = 24.6475576831773

LAST Step Rounding Answer

∴

T = 24.6476

Aquifer Constant Formula Elements

Variables

Functions

Aquifer Constant

Aquifer Constant refers to the product of the hydraulic conductivity (K) and the thickness (b) of an aquifer and also known as coefficient of transmissibility.

Symbol: T

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Aquifer Constant

Discharge

Discharge refers to the volume of water that flows through the aquifer over a given period.

Symbol: Q_w

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Discharge

Radial Distance at Observation Well 2

Radial distance at Observation Well 2 refers to the horizontal distance from the center of a pumping well to the observation well, where groundwater levels are monitored.

Symbol: r₂

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Radial Distance at Observation Well 2

Radial Distance at Observation Well 1

Radial distance at Observation Well 1 refers to the horizontal distance from the center of a pumping well to the observation well, where groundwater levels are monitored.

Symbol: r₁

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Radial Distance at Observation Well 1

Drawdown in Well 1

Drawdown in Well 1 refers to the reduction in water level caused by pumping in a well.

Symbol: s₁

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Drawdown in Well 1

Drawdown in Well 2

Drawdown in Well 2 refers to the reduction in water level caused by pumping in a well.

Symbol: s₂

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Drawdown in Well 2

log

Logarithmic function is an inverse function to exponentiation.

Syntax: log(Base, Number)

Other Formulas to find Aquifer Constant

Go Aquifer Constant given Drawdown in Well

T = \frac{Q w}{2.72 \cdot (s 1 - s 2)}

Go Aquifer Constant given Difference in Drawdowns at Two Wells

T = \frac{Q w}{2.72 \cdot Δs}

Other formulas in Aquifer Constant And Depth of Water in Well category

Go Depth of Water in Well 1 given Drawdown in Well 1

h 1 = H - s 1

Go Depth of Water in Well 2 given Drawdown in Well 2

h 2 = H - s 2

Go Confined Aquifer Discharge given Aquifer Constant

Q w = \frac{T \cdot 2.72 \cdot (s 1 - s 2)}{\log ((\frac{r 2}{r 1}), 10)}

How to Evaluate Aquifer Constant?

Aquifer Constant evaluator uses Aquifer Constant = (Discharge*log((Radial Distance at Observation Well 2/Radial Distance at Observation Well 1),10))/(2.72*(Drawdown in Well 1-Drawdown in Well 2)) to evaluate the Aquifer Constant, Aquifer Constant formula is defined as a measure of the ability of a confined aquifer to transmit water, describing the rate at which water can flow through the aquifer, and is used to analyze the groundwater flow in confined aquifers, providing valuable information for water resource management and hydrological studies. Aquifer Constant is denoted by T symbol.

How to evaluate Aquifer Constant using this online evaluator? To use this online evaluator for Aquifer Constant, enter Discharge (Q_w), Radial Distance at Observation Well 2 (r₂), Radial Distance at Observation Well 1 (r₁), Drawdown in Well 1 (s₁) & Drawdown in Well 2 (s₂) and hit the calculate button.

FAQs on Aquifer Constant

What is the formula to find Aquifer Constant?

The formula of Aquifer Constant is expressed as Aquifer Constant = (Discharge*log((Radial Distance at Observation Well 2/Radial Distance at Observation Well 1),10))/(2.72*(Drawdown in Well 1-Drawdown in Well 2)). Here is an example- 24.64756 = (0.911*log((10/1.07),10))/(2.72*(2.15-2.136)).

How to calculate Aquifer Constant?

With Discharge (Q_w), Radial Distance at Observation Well 2 (r₂), Radial Distance at Observation Well 1 (r₁), Drawdown in Well 1 (s₁) & Drawdown in Well 2 (s₂) we can find Aquifer Constant using the formula - Aquifer Constant = (Discharge*log((Radial Distance at Observation Well 2/Radial Distance at Observation Well 1),10))/(2.72*(Drawdown in Well 1-Drawdown in Well 2)). This formula also uses Logarithmic Inverse (log) function(s).

What are the other ways to Calculate Aquifer Constant?

Here are the different ways to Calculate Aquifer Constant-

Aquifer Constant=(Discharge)/(2.72*(Drawdown in Well 1-Drawdown in Well 2))
Aquifer Constant=(Discharge)/(2.72*Difference in Drawdowns)

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Aquifer Constant Formula

​GoAquifer Constant given Drawdown in Well Formula

​GoAquifer Constant given Difference in Drawdowns at Two Wells Formula

Aquifer Constant Example

Aquifer Constant Solution

Aquifer Constant Formula Elements

Other Formulas to find Aquifer Constant

Other formulas in Aquifer Constant And Depth of Water in Well category

How to Evaluate Aquifer Constant?

FAQs on Aquifer Constant

Variable Name

GoAquifer Constant given Drawdown in Well Formula

GoAquifer Constant given Difference in Drawdowns at Two Wells Formula