Change in Drawdown given Formation Constant T Solution

STEP 0: Pre-Calculation Summary
Formula Used
Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow)
Δd = (2.303*Q)/(4*pi*Fc)
This formula uses 1 Constants, 3 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Variables Used
Change in Drawdown - (Measured in Meter) - Change in Drawdown at the two wells.
Discharge - (Measured in Cubic Meter per Second) - Discharge is the rate of flow of a liquid.
Formation Constant for Unsteady Flow - (Measured in Square Meter per Second) - Formation Constant for Unsteady Flow is an equilibrium constant for the formation of a complex in solution.
STEP 1: Convert Input(s) to Base Unit
Discharge: 1.01 Cubic Meter per Second --> 1.01 Cubic Meter per Second No Conversion Required
Formation Constant for Unsteady Flow: 0.81 Square Meter per Second --> 0.81 Square Meter per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Δd = (2.303*Q)/(4*pi*Fc) --> (2.303*1.01)/(4*pi*0.81)
Evaluating ... ...
Δd = 0.228518007580272
STEP 3: Convert Result to Output's Unit
0.228518007580272 Meter --> No Conversion Required
FINAL ANSWER
0.228518007580272 0.228518 Meter <-- Change in Drawdown
(Calculation completed in 00.004 seconds)

Credits

Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
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6 Drawdown and Change in Drawdown Calculators

Change in Drawdown given Time at 1st and 2nd Instance
Go Difference in Drawdowns = (2.303*Discharge*log((Time of Drawdown/Time of Drawdown (t1)),10))/(4*pi*Time in Hours for Well Discharge)
Drawdown given Well Function
Go Total Drawdown in Well = (Discharge*Well Function of u)/(4*pi*Formation Constant for Unsteady Flow)
Change in Drawdown given Formation Constant T
Go Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow)
Change in Drawdown given Chow's Function
Go Change in Drawdown = Total Drawdown in Well/Chow's Function
Chow's Function given Drawdown
Go Chow's Function = Total Drawdown in Well/Change in Drawdown
Drawdown given Chow's Function
Go Total Drawdown in Well = Chow's Function*Change in Drawdown

Change in Drawdown given Formation Constant T Formula

Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow)
Δd = (2.303*Q)/(4*pi*Fc)

What is Drawdown?

Drawdown is a change in groundwater level due to an applied stress, caused by events such as: Pumping from a well. Pumping from a neighbouring well. Intensive water taking from local area.

How to Calculate Change in Drawdown given Formation Constant T?

Change in Drawdown given Formation Constant T calculator uses Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow) to calculate the Change in Drawdown, The Change in Drawdown given Formation Constant T is defined as the value of change in drawdown when we have prior information of other parameters used. Change in Drawdown is denoted by Δd symbol.

How to calculate Change in Drawdown given Formation Constant T using this online calculator? To use this online calculator for Change in Drawdown given Formation Constant T, enter Discharge (Q) & Formation Constant for Unsteady Flow (Fc) and hit the calculate button. Here is how the Change in Drawdown given Formation Constant T calculation can be explained with given input values -> 0.228518 = (2.303*1.01)/(4*pi*0.81).

FAQ

What is Change in Drawdown given Formation Constant T?
The Change in Drawdown given Formation Constant T is defined as the value of change in drawdown when we have prior information of other parameters used and is represented as Δd = (2.303*Q)/(4*pi*Fc) or Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow). Discharge is the rate of flow of a liquid & Formation Constant for Unsteady Flow is an equilibrium constant for the formation of a complex in solution.
How to calculate Change in Drawdown given Formation Constant T?
The Change in Drawdown given Formation Constant T is defined as the value of change in drawdown when we have prior information of other parameters used is calculated using Change in Drawdown = (2.303*Discharge)/(4*pi*Formation Constant for Unsteady Flow). To calculate Change in Drawdown given Formation Constant T, you need Discharge (Q) & Formation Constant for Unsteady Flow (Fc). With our tool, you need to enter the respective value for Discharge & Formation Constant for Unsteady Flow 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 Change in Drawdown?
In this formula, Change in Drawdown uses Discharge & Formation Constant for Unsteady Flow. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Change in Drawdown = Total Drawdown in Well/Chow's Function
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