Aquifer Constant Calculator

✖Discharge refers to the volume of water that flows through the aquifer over a given period.ⓘ Discharge [Q_w]			+10% -10%
✖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.ⓘ Radial Distance at Observation Well 2 [r₂]			+10% -10%
✖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.ⓘ Radial Distance at Observation Well 1 [r₁]			+10% -10%
✖Drawdown in Well 1 refers to the reduction in water level caused by pumping in a well.ⓘ Drawdown in Well 1 [s₁]			+10% -10%
✖Drawdown in Well 2 refers to the reduction in water level caused by pumping in a well.ⓘ Drawdown in Well 2 [s₂]			+10% -10%

✖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.ⓘ Aquifer Constant [T]

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Aquifer Constant Solution

STEP 0: Pre-Calculation Summary

Formula Used

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))
T = (Q_w*log((r₂/r₁),10))/(2.72*(s₁-s₂))
This formula uses 1 Functions, 6 Variables

Functions Used

log - Logarithmic function is an inverse function to exponentiation., log(Base, Number)

Variables Used

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.
Discharge - (Measured in Cubic Meter per Second) - Discharge refers to the volume of water that flows through the aquifer over a given period.
Radial Distance at Observation Well 2 - (Measured in Meter) - 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.
Radial Distance at Observation Well 1 - (Measured in Meter) - 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.
Drawdown in Well 1 - (Measured in Meter) - Drawdown in Well 1 refers to the reduction in water level caused by pumping in a well.
Drawdown in Well 2 - (Measured in Meter) - Drawdown in Well 2 refers to the reduction in water level caused by pumping in a well.

STEP 1: Convert Input(s) to Base Unit

Discharge: 0.911 Cubic Meter per Second --> 0.911 Cubic Meter per Second No Conversion Required
Radial Distance at Observation Well 2: 10 Meter --> 10 Meter No Conversion Required
Radial Distance at Observation Well 1: 1.07 Meter --> 1.07 Meter No Conversion Required
Drawdown in Well 1: 2.15 Meter --> 2.15 Meter No Conversion Required
Drawdown in Well 2: 2.136 Meter --> 2.136 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T = (Q_w*log((r₂/r₁),10))/(2.72*(s₁-s₂)) --> (0.911*log((10/1.07),10))/(2.72*(2.15-2.136))

Evaluating ... ...

T = 24.6475576831773

STEP 3: Convert Result to Output's Unit

24.6475576831773 --> No Conversion Required

FINAL ANSWER

24.6475576831773 ≈ 24.64756 <-- Aquifer Constant

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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< Aquifer Constant And Depth of Water in Well Calculators

Confined Aquifer Discharge given Aquifer Constant

LaTeX Go Discharge = (Aquifer Constant*2.72*(Drawdown in Well 1-Drawdown in Well 2))/(log((Radial Distance at Observation Well 2/Radial Distance at Observation Well 1),10))

Aquifer Constant

LaTeX Go 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))

Depth of Water in Well 1 given Drawdown in Well 1

LaTeX Go Depth of Water in Well 1 = Thickness of Aquifer-Drawdown in Well 1

Depth of Water in Well 2 given Drawdown in Well 2

LaTeX Go Depth of Water in Well 2 = Thickness of Aquifer-Drawdown in Well 2

Aquifer Constant Formula

LaTeX Go

What is Coefficient of Transmissibility?

The coefficient of transmissibility. is defined as the rate of flow of water. in gallons per day through a vertical. strip of the aquifer 1 ft wide and ex- tending the full saturated thickness.

How to Calculate Aquifer Constant?

Aquifer Constant calculator 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 calculate 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 calculate Aquifer Constant using this online calculator? To use this online calculator 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. Here is how the Aquifer Constant calculation can be explained with given input values -> 24.64756 = (0.911*log((10/1.07),10))/(2.72*(2.15-2.136)).

FAQ

What is 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 and is represented as T = (Q_w*log((r₂/r₁),10))/(2.72*(s₁-s₂)) or 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)). Discharge refers to the volume of water that flows through the aquifer over a given period, 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, 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, Drawdown in Well 1 refers to the reduction in water level caused by pumping in a well & Drawdown in Well 2 refers to the reduction in water level caused by pumping in a well.

How to calculate 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 is calculated using 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 calculate Aquifer Constant, you need 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). With our tool, you need to enter the respective value for Discharge, Radial Distance at Observation Well 2, Radial Distance at Observation Well 1, Drawdown in Well 1 & Drawdown in Well 2 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 Aquifer Constant?

In this formula, Aquifer Constant uses Discharge, Radial Distance at Observation Well 2, Radial Distance at Observation Well 1, Drawdown in Well 1 & Drawdown in Well 2. We can use 2 other way(s) to calculate the same, which is/are as follows -

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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