Modified Drawdown in Well 1 Solution

STEP 0: Pre-Calculation Summary
Formula Used
Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness))
s1' = s1-((s1)^2/(2*Hi))
This formula uses 3 Variables
Variables Used
Modified Drawdown 1 - (Measured in Meter) - Modified Drawdown 1 is the modified value of drawdown for well 1.
Drawdown in Well 1 - (Measured in Meter) - Drawdown in Well 1 is a peak-to-trough decline during a specific period for well 1.
Initial Aquifer Thickness - (Measured in Meter) - Initial Aquifer Thickness is the aquifer thickness at initial stage before pumping.
STEP 1: Convert Input(s) to Base Unit
Drawdown in Well 1: 2.15 Meter --> 2.15 Meter No Conversion Required
Initial Aquifer Thickness: 2.54 Meter --> 2.54 Meter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
s1' = s1-((s1)^2/(2*Hi)) --> 2.15-((2.15)^2/(2*2.54))
Evaluating ... ...
s1' = 1.24005905511811
STEP 3: Convert Result to Output's Unit
1.24005905511811 Meter --> No Conversion Required
FINAL ANSWER
1.24005905511811 1.240059 Meter <-- Modified Drawdown 1
(Calculation completed in 00.020 seconds)

Credits

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Created by Suraj Kumar
Birsa Institute of Technology (BIT), Sindri
Suraj Kumar has created this Calculator and 2100+ more calculators!
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Verified by Ishita Goyal
Meerut Institute of Engineering and Technology (MIET), Meerut
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Modified Discharge And Drawdown in Unconfined Aquifers Calculators

Thickness of Aquifer from Impermeable Layer given Modified Drawdown in Well 1
​ LaTeX ​ Go Unconfined Aquifer Thickness = ((Drawdown in Well 1)^2/(2*(Drawdown in Well 1-Modified Drawdown 1)))
Thickness of Aquifer from Impermeable Layer given Modified Drawdown in Well 2
​ LaTeX ​ Go Unconfined Aquifer Thickness = ((Drawdown in Well 2)^2/(2*(Drawdown in Well 2-Modified Drawdown 2)))
Modified Drawdown in Well 1
​ LaTeX ​ Go Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness))
Modified Drawdown in Well 2
​ LaTeX ​ Go Modified Drawdown 2 = Drawdown in Well 2-((Drawdown in Well 2)^2/(2*Initial Aquifer Thickness))

Modified Drawdown in Well 1 Formula

​LaTeX ​Go
Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness))
s1' = s1-((s1)^2/(2*Hi))

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 Modified Drawdown in Well 1?

Modified Drawdown in Well 1 calculator uses Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness)) to calculate the Modified Drawdown 1, The Modified Drawdown in Well 1 formula is defined as the calculation of the value of modified drawdown when we have prior information of other parameters used. Modified Drawdown 1 is denoted by s1' symbol.

How to calculate Modified Drawdown in Well 1 using this online calculator? To use this online calculator for Modified Drawdown in Well 1, enter Drawdown in Well 1 (s1) & Initial Aquifer Thickness (Hi) and hit the calculate button. Here is how the Modified Drawdown in Well 1 calculation can be explained with given input values -> 1.240059 = 2.15-((2.15)^2/(2*2.54)).

FAQ

What is Modified Drawdown in Well 1?
The Modified Drawdown in Well 1 formula is defined as the calculation of the value of modified drawdown when we have prior information of other parameters used and is represented as s1' = s1-((s1)^2/(2*Hi)) or Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness)). Drawdown in Well 1 is a peak-to-trough decline during a specific period for well 1 & Initial Aquifer Thickness is the aquifer thickness at initial stage before pumping.
How to calculate Modified Drawdown in Well 1?
The Modified Drawdown in Well 1 formula is defined as the calculation of the value of modified drawdown when we have prior information of other parameters used is calculated using Modified Drawdown 1 = Drawdown in Well 1-((Drawdown in Well 1)^2/(2*Initial Aquifer Thickness)). To calculate Modified Drawdown in Well 1, you need Drawdown in Well 1 (s1) & Initial Aquifer Thickness (Hi). With our tool, you need to enter the respective value for Drawdown in Well 1 & Initial Aquifer Thickness 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 Modified Drawdown 1?
In this formula, Modified Drawdown 1 uses Drawdown in Well 1 & Initial Aquifer Thickness. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Modified Drawdown 1 = Modified Drawdown 2+((Discharge*log((Radial Distance at Observation Well 2/Radial Distance at Observation Well 1),e))/(2.72*Aquifer Constant))
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