Drawdown given Chow's Function Calculator

✖Chow's Function is a constant given by chow.ⓘ Chow's Function [F_u]			+10% -10%
✖Change in Drawdown at the two wells.ⓘ Change in Drawdown [Δd]			+10% -10%

✖The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.ⓘ Drawdown given Chow's Function [s_t]

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Formula

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Drawdown given Chow's Function

Formula

`"s"_{"t"} = "F"_{"u"}*"Δd"`

Example

`"0.8426m"="3.83"*"0.22m"`

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Drawdown given Chow's Function Solution

STEP 0: Pre-Calculation Summary

Formula Used

Total Drawdown in Well = Chow's Function*Change in Drawdown
s_t = F_u*Δd
This formula uses 3 Variables

Variables Used

Total Drawdown in Well - (Measured in Meter) - The Total Drawdown in Well is defined as the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping a well as part of an aquifer test or well test.
Chow's Function - Chow's Function is a constant given by chow.
Change in Drawdown - (Measured in Meter) - Change in Drawdown at the two wells.

STEP 1: Convert Input(s) to Base Unit

Chow's Function: 3.83 --> No Conversion Required
Change in Drawdown: 0.22 Meter --> 0.22 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

s_t = F_u*Δd --> 3.83*0.22

Evaluating ... ...

s_t = 0.8426

STEP 3: Convert Result to Output's Unit

0.8426 Meter --> No Conversion Required

FINAL ANSWER

0.8426 Meter <-- Total Drawdown in Well

(Calculation completed in 00.004 seconds)

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Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2200+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< 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

Drawdown given Chow's Function Formula

Total Drawdown in Well = Chow's Function*Change in Drawdown
s_t = F_u*Δd

What is Drawdown?

A drawdown is a peak-to-trough decline during a specific period for an investment, trading account, or fund. A drawdown is usually quoted as the percentage between the peak and the subsequent trough.

How to Calculate Drawdown given Chow's Function?

Drawdown given Chow's Function calculator uses Total Drawdown in Well = Chow's Function*Change in Drawdown to calculate the Total Drawdown in Well, The Drawdown given Chow's Function is defined as the value of drawdown when we have prior information of other parameters used. Total Drawdown in Well is denoted by s_t symbol.

How to calculate Drawdown given Chow's Function using this online calculator? To use this online calculator for Drawdown given Chow's Function, enter Chow's Function (F_u) & Change in Drawdown (Δd) and hit the calculate button. Here is how the Drawdown given Chow's Function calculation can be explained with given input values -> 0.8426 = 3.83*0.22.

FAQ

What is Drawdown given Chow's Function?

The Drawdown given Chow's Function is defined as the value of drawdown when we have prior information of other parameters used and is represented as s_t = F_u*Δd or Total Drawdown in Well = Chow's Function*Change in Drawdown. Chow's Function is a constant given by chow & Change in Drawdown at the two wells.

How to calculate Drawdown given Chow's Function?

The Drawdown given Chow's Function is defined as the value of drawdown when we have prior information of other parameters used is calculated using Total Drawdown in Well = Chow's Function*Change in Drawdown. To calculate Drawdown given Chow's Function, you need Chow's Function (F_u) & Change in Drawdown (Δd). With our tool, you need to enter the respective value for Chow's Function & Change in Drawdown 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 Total Drawdown in Well?

In this formula, Total Drawdown in Well uses Chow's Function & Change in Drawdown. We can use 1 other way(s) to calculate the same, which is/are as follows -

Total Drawdown in Well = (Discharge*Well Function of u)/(4*pi*Formation Constant for Unsteady Flow)

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