Transmissivity derived from time drawdown graphs Calculator

✖The Pumping Rate is referred as volume of water (or other fluid) that is pumped per unit of time. It’s typically measured in units like liters per second (L/s) or cubic meters per hour (m³/h).ⓘ Pumping Rate [q]			+10% -10%
✖The Drawdown Across One Log Cycle is referred as change in water level (or hydraulic head) in an aquifer due to pumping from a well.ⓘ Drawdown Across One Log Cycle [Δs]			+10% -10%

✖The Transmissivity refers to the measure of how much water can be transmitted horizontally through an aquifer is the product of the hydraulic conductivity of the aquifer and its saturated thickness.ⓘ Transmissivity derived from time drawdown graphs [τ]

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Transmissivity derived from time drawdown graphs Solution

STEP 0: Pre-Calculation Summary

Formula Used

Transmissivity = (2.3*Pumping Rate)/(4*pi*Drawdown Across One Log Cycle)
τ = (2.3*q)/(4*pi*Δs)
This formula uses 1 Constants, 3 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Variables Used

Transmissivity - (Measured in Square Meter per Second) - The Transmissivity refers to the measure of how much water can be transmitted horizontally through an aquifer is the product of the hydraulic conductivity of the aquifer and its saturated thickness.
Pumping Rate - (Measured in Cubic Meter per Second) - The Pumping Rate is referred as volume of water (or other fluid) that is pumped per unit of time. It’s typically measured in units like liters per second (L/s) or cubic meters per hour (m³/h).
Drawdown Across One Log Cycle - The Drawdown Across One Log Cycle is referred as change in water level (or hydraulic head) in an aquifer due to pumping from a well.

STEP 1: Convert Input(s) to Base Unit

Pumping Rate: 7 Cubic Meter per Second --> 7 Cubic Meter per Second No Conversion Required
Drawdown Across One Log Cycle: 44.55 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

τ = (2.3*q)/(4*pi*Δs) --> (2.3*7)/(4*pi*44.55)

Evaluating ... ...

τ = 0.0287586373039227

STEP 3: Convert Result to Output's Unit

0.0287586373039227 Square Meter per Second --> No Conversion Required

FINAL ANSWER

0.0287586373039227 ≈ 0.028759 Square Meter per Second <-- Transmissivity

(Calculation completed in 00.007 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

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< Time Drawdown Analysis Calculators

Time at which Steady Shape Conditions Develop

LaTeX Go Time at Which Steady-shape Conditions Develop = (7200*Distance from Pumping Well^2*Storage Coefficient)/Transmissivity

Storage Coefficient given time at which Steady Shape conditions develops

LaTeX Go Storage Coefficient = Transmissivity*Time at Which Steady-shape Conditions Develop/7200*Distance from Pumping Well^2

Transmissivity derived from time drawdown graphs

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

Equation for pumping rate of transmissivity from time drawdown graphs

LaTeX Go Pumping Rate = (Transmissivity*4*pi*Drawdown Across Log Cycle)/2.3

Transmissivity derived from time drawdown graphs Formula

LaTeX Go

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

What is Transmissivity?

Transmissivity describes the ability of the aquifer to transmit groundwater throughout its entire saturated thickness. Transmissivity is measured as the rate at which groundwater can flow through an aquifer section of unit width under a unit hydraulic gradient

How to Calculate Transmissivity derived from time drawdown graphs?

Transmissivity derived from time drawdown graphs calculator uses Transmissivity = (2.3*Pumping Rate)/(4*pi*Drawdown Across One Log Cycle) to calculate the Transmissivity, Transmissivity derived from time drawdown graphs is the rate at which water passes through a unit width of the aquifer under a unit hydraulic gradient. Transmissivity is denoted by τ symbol.

How to calculate Transmissivity derived from time drawdown graphs using this online calculator? To use this online calculator for Transmissivity derived from time drawdown graphs, enter Pumping Rate (q) & Drawdown Across One Log Cycle (Δs) and hit the calculate button. Here is how the Transmissivity derived from time drawdown graphs calculation can be explained with given input values -> 0.028759 = (2.3*7)/(4*pi*44.55).

FAQ

What is Transmissivity derived from time drawdown graphs?

Transmissivity derived from time drawdown graphs is the rate at which water passes through a unit width of the aquifer under a unit hydraulic gradient and is represented as τ = (2.3*q)/(4*pi*Δs) or Transmissivity = (2.3*Pumping Rate)/(4*pi*Drawdown Across One Log Cycle). The Pumping Rate is referred as volume of water (or other fluid) that is pumped per unit of time. It’s typically measured in units like liters per second (L/s) or cubic meters per hour (m³/h) & The Drawdown Across One Log Cycle is referred as change in water level (or hydraulic head) in an aquifer due to pumping from a well.

How to calculate Transmissivity derived from time drawdown graphs?

Transmissivity derived from time drawdown graphs is the rate at which water passes through a unit width of the aquifer under a unit hydraulic gradient is calculated using Transmissivity = (2.3*Pumping Rate)/(4*pi*Drawdown Across One Log Cycle). To calculate Transmissivity derived from time drawdown graphs, you need Pumping Rate (q) & Drawdown Across One Log Cycle (Δs). With our tool, you need to enter the respective value for Pumping Rate & Drawdown Across One Log Cycle 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 Transmissivity?

In this formula, Transmissivity uses Pumping Rate & Drawdown Across One Log Cycle. We can use 1 other way(s) to calculate the same, which is/are as follows -

Transmissivity = 35*Pumping Rate/Drawdown Across One Log Cycle

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