Transmissivity when Discharge at Edge of Zone of Influence Calculator

✖Steady Flow in a Confined Aquifer is a condition where groundwater flows through an aquifer under conditions of steady-state equilibrium.ⓘ Steady Flow in a Confined Aquifer [Q_sf]			+10% -10%
✖Radial Distance at Observation Well 2 is the value of radial distance from well 2 when we have prior information of other parameters used.ⓘ Radial Distance at Observation Well 2 [r₂]			+10% -10%
✖Radial Distance at Observation Well 1 is the value of radial distance from well 1 when we have prior information of other parameters used.ⓘ Radial Distance at Observation Well 1 [r₁]			+10% -10%
✖Possible Drawdown in Confined Aquifer is the drawdown that would have occurred if the aquifer had been confined (that is, if no dewatering had occurred).ⓘ Possible Drawdown in Confined Aquifer [s']			+10% -10%

✖Transmissivity at Edge of Zone of Influence is the capacity of the aquifer to transmit water at the boundary of the area influenced by the pumping well.ⓘ Transmissivity when Discharge at Edge of Zone of Influence [T_iz]

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Transmissivity when Discharge at Edge of Zone of Influence Solution

STEP 0: Pre-Calculation Summary

Formula Used

Transmissivity at Edge of Zone of Influence = (Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1))/(2*pi*Possible Drawdown in Confined Aquifer)
T_iz = (Q_sf*ln(r₂/r₁))/(2*pi*s')
This formula uses 1 Constants, 1 Functions, 5 Variables

Constants Used

pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288

Functions Used

ln - The natural logarithm, also known as the logarithm to the base e, is the inverse function of the natural exponential function., ln(Number)

Variables Used

Transmissivity at Edge of Zone of Influence - (Measured in Square Meter per Second) - Transmissivity at Edge of Zone of Influence is the capacity of the aquifer to transmit water at the boundary of the area influenced by the pumping well.
Steady Flow in a Confined Aquifer - (Measured in Cubic Meter per Second) - Steady Flow in a Confined Aquifer is a condition where groundwater flows through an aquifer under conditions of steady-state equilibrium.
Radial Distance at Observation Well 2 - (Measured in Meter) - Radial Distance at Observation Well 2 is the value of radial distance from well 2 when we have prior information of other parameters used.
Radial Distance at Observation Well 1 - (Measured in Meter) - Radial Distance at Observation Well 1 is the value of radial distance from well 1 when we have prior information of other parameters used.
Possible Drawdown in Confined Aquifer - (Measured in Meter) - Possible Drawdown in Confined Aquifer is the drawdown that would have occurred if the aquifer had been confined (that is, if no dewatering had occurred).

STEP 1: Convert Input(s) to Base Unit

Steady Flow in a Confined Aquifer: 122 Cubic Meter per Second --> 122 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: 5 Meter --> 5 Meter No Conversion Required
Possible Drawdown in Confined Aquifer: 0.2 Meter --> 0.2 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T_iz = (Q_sf*ln(r₂/r₁))/(2*pi*s') --> (122*ln(10/5))/(2*pi*0.2)

Evaluating ... ...

T_iz = 67.2938580465587

STEP 3: Convert Result to Output's Unit

67.2938580465587 Square Meter per Second --> No Conversion Required

FINAL ANSWER

67.2938580465587 ≈ 67.29386 Square Meter per Second <-- Transmissivity at Edge of Zone of Influence

(Calculation completed in 00.020 seconds)

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< Steady Flow into a Well Calculators

Velocity of Flow by Darcy's Law at Radical Distance

LaTeX Go Velocity of Flow at Radial Distance = Coefficient of Permeability*(Change in Piezometric Head/Change in Radial Distance)

Change in Piezometric Head

LaTeX Go Change in Piezometric Head = Velocity of Flow at Radial Distance*Change in Radial Distance/Coefficient of Permeability

Change in Radial Distance

LaTeX Go Change in Radial Distance = Coefficient of Permeability*Change in Piezometric Head/Velocity of Flow at Radial Distance

Cylindrical Surface through which Velocity of Flow Occurs

LaTeX Go Surface through which the Velocity of Flow Occurs = 2*pi*Radial Distance*Width of Aquifer

Transmissivity when Discharge at Edge of Zone of Influence Formula

LaTeX Go

What is Recharge?

Recharge is the primary method through which water enters an aquifer. This process usually occurs in the vadose zone below plant roots and, is often expressed as a flux to the water table surface. Groundwater recharge also encompasses water moving away from the water table farther into the saturated zone.

How to Calculate Transmissivity when Discharge at Edge of Zone of Influence?

Transmissivity when Discharge at Edge of Zone of Influence calculator uses Transmissivity at Edge of Zone of Influence = (Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1))/(2*pi*Possible Drawdown in Confined Aquifer) to calculate the Transmissivity at Edge of Zone of Influence, The Transmissivity when Discharge at Edge of Zone of Influence formula is defined as the capacity of the aquifer to transmit water at the boundary of the area influenced by the pumping well. Transmissivity at Edge of Zone of Influence is denoted by T_iz symbol.

How to calculate Transmissivity when Discharge at Edge of Zone of Influence using this online calculator? To use this online calculator for Transmissivity when Discharge at Edge of Zone of Influence, enter Steady Flow in a Confined Aquifer (Q_sf), Radial Distance at Observation Well 2 (r₂), Radial Distance at Observation Well 1 (r₁) & Possible Drawdown in Confined Aquifer (s') and hit the calculate button. Here is how the Transmissivity when Discharge at Edge of Zone of Influence calculation can be explained with given input values -> 67.29386 = (122*ln(10/5))/(2*pi*0.2).

FAQ

What is Transmissivity when Discharge at Edge of Zone of Influence?

The Transmissivity when Discharge at Edge of Zone of Influence formula is defined as the capacity of the aquifer to transmit water at the boundary of the area influenced by the pumping well and is represented as T_iz = (Q_sf*ln(r₂/r₁))/(2*pi*s') or Transmissivity at Edge of Zone of Influence = (Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1))/(2*pi*Possible Drawdown in Confined Aquifer). Steady Flow in a Confined Aquifer is a condition where groundwater flows through an aquifer under conditions of steady-state equilibrium, Radial Distance at Observation Well 2 is the value of radial distance from well 2 when we have prior information of other parameters used, Radial Distance at Observation Well 1 is the value of radial distance from well 1 when we have prior information of other parameters used & Possible Drawdown in Confined Aquifer is the drawdown that would have occurred if the aquifer had been confined (that is, if no dewatering had occurred).

How to calculate Transmissivity when Discharge at Edge of Zone of Influence?

The Transmissivity when Discharge at Edge of Zone of Influence formula is defined as the capacity of the aquifer to transmit water at the boundary of the area influenced by the pumping well is calculated using Transmissivity at Edge of Zone of Influence = (Steady Flow in a Confined Aquifer*ln(Radial Distance at Observation Well 2/Radial Distance at Observation Well 1))/(2*pi*Possible Drawdown in Confined Aquifer). To calculate Transmissivity when Discharge at Edge of Zone of Influence, you need Steady Flow in a Confined Aquifer (Q_sf), Radial Distance at Observation Well 2 (r₂), Radial Distance at Observation Well 1 (r₁) & Possible Drawdown in Confined Aquifer (s'). With our tool, you need to enter the respective value for Steady Flow in a Confined Aquifer, Radial Distance at Observation Well 2, Radial Distance at Observation Well 1 & Possible Drawdown in Confined Aquifer and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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