Distance from pumping well to observation well Calculator

✖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 [τ]			+10% -10%
✖Time at the Point of Intersection between Straight Line and Zero-drawdown Line.ⓘ Time at the Point of Intersection [t_o]			+10% -10%
✖Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.ⓘ Storage Coefficient [S]			+10% -10%

✖Distance from Pumping Well to the point where drawdown occurs.ⓘ Distance from pumping well to observation well [r]

⎘ Copy

👎

Formula

LaTeX

Reset

👍

Download Groundwater Hydrology Formula PDF PDF Image

Distance from pumping well to observation well Solution

STEP 0: Pre-Calculation Summary

Formula Used

Distance from Pumping Well = sqrt((2.25*Transmissivity*Time at the Point of Intersection)/Storage Coefficient)
r = sqrt((2.25*τ*t_o)/S)
This formula uses 1 Functions, 4 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Distance from Pumping Well - (Measured in Meter) - Distance from Pumping Well to the point where drawdown occurs.
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.
Time at the Point of Intersection - (Measured in Minute) - Time at the Point of Intersection between Straight Line and Zero-drawdown Line.
Storage Coefficient - Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.

STEP 1: Convert Input(s) to Base Unit

Transmissivity: 1.4 Square Meter per Second --> 1.4 Square Meter per Second No Conversion Required
Time at the Point of Intersection: 120 Minute --> 120 Minute No Conversion Required
Storage Coefficient: 85 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

r = sqrt((2.25*τ*t_o)/S) --> sqrt((2.25*1.4*120)/85)

Evaluating ... ...

r = 2.10880507006442

STEP 3: Convert Result to Output's Unit

2.10880507006442 Meter --> No Conversion Required

FINAL ANSWER

2.10880507006442 ≈ 2.108805 Meter <-- Distance from Pumping Well

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Civil » Engineering Hydrology » Groundwater Hydrology » Time Drawdown Analysis » Distance from pumping well to observation well

Credits

Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 2000+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< 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

Distance from pumping well to observation well Formula

LaTeX Go

Distance from Pumping Well = sqrt((2.25*Transmissivity*Time at the Point of Intersection)/Storage Coefficient)
r = sqrt((2.25*τ*t_o)/S)

What is Storage coefficient?

Storage coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.

How to Calculate Distance from pumping well to observation well?

Distance from pumping well to observation well calculator uses Distance from Pumping Well = sqrt((2.25*Transmissivity*Time at the Point of Intersection)/Storage Coefficient) to calculate the Distance from Pumping Well, The Distance from pumping well to observation well depends on the variables of Transmissivity, time at the point where the straight line intersects the zero-drawdown line and the storage coefficient. Distance from Pumping Well is denoted by r symbol.

How to calculate Distance from pumping well to observation well using this online calculator? To use this online calculator for Distance from pumping well to observation well, enter Transmissivity (τ), Time at the Point of Intersection (t_o) & Storage Coefficient (S) and hit the calculate button. Here is how the Distance from pumping well to observation well calculation can be explained with given input values -> 2.108805 = sqrt((2.25*1.4*7200)/85).

FAQ

What is Distance from pumping well to observation well?

The Distance from pumping well to observation well depends on the variables of Transmissivity, time at the point where the straight line intersects the zero-drawdown line and the storage coefficient and is represented as r = sqrt((2.25*τ*t_o)/S) or Distance from Pumping Well = sqrt((2.25*Transmissivity*Time at the Point of Intersection)/Storage Coefficient). 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, Time at the Point of Intersection between Straight Line and Zero-drawdown Line & Storage Coefficient is the volume of water released from storage per unit decline in hydraulic head in the aquifer, per unit area of the aquifer.

How to calculate Distance from pumping well to observation well?

The Distance from pumping well to observation well depends on the variables of Transmissivity, time at the point where the straight line intersects the zero-drawdown line and the storage coefficient is calculated using Distance from Pumping Well = sqrt((2.25*Transmissivity*Time at the Point of Intersection)/Storage Coefficient). To calculate Distance from pumping well to observation well, you need Transmissivity (τ), Time at the Point of Intersection (t_o) & Storage Coefficient (S). With our tool, you need to enter the respective value for Transmissivity, Time at the Point of Intersection & Storage Coefficient and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search