The image above represents the volume of water drained from an aquifer. To calculate the volume of water drained from an aquifer, three essential parameters are needed and these parameters are Storativity (S), Surface Area (A) and the Average Decline in Head (Δh).
The formula for calculating volume of water drained from an aquifer:
Vw = SAΔh
Where:
Vw = Volume of Water Drained from an Aquifer
S = Storativity
A = Surface Area
Δh = Average Decline in Head
Let’s solve an example;
Find the volume of water drained from an aquifer when the storativity is 24, the surface area is 38, the average decline in head is 40.
This implies that;
S = Storativity = 24
A = Surface Area = 38
Δh = Average Decline in Head = 40
So, Vw = SAΔh
Vw = 24(38)(40)
Vw = 36480
Therefore, the volume of water drained from an aquifer is 36480 ft³.
Calculating the Storativity when the Volume of Water Drained From an Aquifer, the Surface Area and the Average Decline in Head are Given
S = Vw / AΔh
Where;
S = Storativity
Vw = Volume of Water Drained from an Aquifer
A = Surface Area
Δh = Average Decline in Head
Let’s solve an example;
Find the storativity when the volume of water drained from an aquifer is 60, the surface area is 18 and the average decline in head is 4.
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This implies that;
Vw = Volume of Water Drained from an Aquifer = 60
A = Surface Area = 18
Δh = Average Decline in Head = 4
S = Vw / AΔh
Hence, SÂ = 60 / (18)(4)
SÂ = 60 / 72
S = 0.83
Therefore, the storativity is 0.83 ft.
Read more:Â How to Calculate and Solve for Aquifer Compressibility | Aquifer Characteristics
Calculating the Surface Area when the Volume of Water drained from an Aquifer, the Storativity and the Average Decline in Head is Given.
A = Vw / SΔh
Where;
A = Surface Area
Vw = Volume of Water Drained from an Aquifer
S = Storativity
Δh = Average Decline in Head
Let’s solve an example;
Find the surface area when the volume of water drained from an aquifer is 30, the storativity is 4 and the average decline in head is 5.
This implies that;
Vw = Volume of Water Drained from an Aquifer = 30
S = Storativity = 4
Δh = Average Decline in Head = 5
A = Vw / SΔh
That is, AÂ = 30 / (4)(5)
AÂ = 30 / 20
A = 1.5
Therefore, the surface area is 1.5 ft.
Read more:Â How to Calculate and Solve for Total Volume Discharge per Unit Width of Aquifer | Flow Lines
Calculating the Average Decline in Head when the Volume of Water Drained From an Aquifer, the Storativity and the Surface Area are Given
Δh = Vw / SA
Where;
Δh = Average Decline in Head
Vw = Volume of Water Drained from an Aquifer
S = Storativity
A = Surface Area
Let’s solve an example;
Find the average decline in head when the volume of water drained from an aquifer is 20, the storativity is 2 and the surface area is 2.
This implies that;
Vw = Volume of Water Drained from an Aquifer = 20
S = Storativity = 2
A = Surface Area = 2
Δh = Vw / SA
That is, Δh = 20 / (2)(2)
Δh = 20 / 4
Δh = 5
Therefore, the average decline in head is 5.
How to Calculate the Volume of Water Drained From an Aquifer Using Nickzom Calculator
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the volume of water drained from an aquifer.
To get the answer and workings of the volume of water drained from an aquifer using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe for NGN 2,000 per annum to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Geology under Add-on.
Now, Click on Aquifer Characteristics under Geology
Now, Click on Volume of Water Drained From an Aquifer under Aquifer Characteristics
The screenshot below displays the page or activity to enter your values, to get the answer for the volume of water drained from an aquifer according to the respective parameters which are the Storativity (S), Surface Area (A) and the Average Decline in Head (Δh).
Now, enter the values appropriately and accordingly for the parameters as required by the Storativity (S) is 24, Surface Area (A) is 38 and the Average Decline in Head (Δh) is 40.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the volume of water drained from an aquifer and presents the formula, workings and steps too.
