Geology

How to Calculate and Solve for Flow at Some Time after Recession | Hydrogeology

Last Updated on April 8, 2024

The image above represents flow at some time after recession. To calculate flow at some time after recession, three essential parameters are needed and these parameters are Flow at the Start of Recession (Qo), Recession Constant (a) and Time Since the Start of Recession (t).

The formula for calculating flow at some time after recession:

Q = Qoe-at

Where:

Q = Flow at Some Time after Recession
Qo = Flow at the Start of Recession
a = Recession Constant
t = Time Since the Start of Recession

Let’s solve an example;
Find the flow at some time after recession when the flow at the start of recession is 12, recession constant is 24 and time since the start of recession is 9.

This implies that;

Qo = Flow at the Start of Recession = 12
a = Recession Constant = 24
t = Time Since the Start of Recession = 9

Q = Qoe-at
That is, Q = (12)e-(24)(9)
Q = (12)e-(216)
Q = (12)e-216
This means that Q = (12)(1.557e-94)
Q = 1.86e-93

Therefore, the flow at some time after recession is 1.86e-93.

Read more: The Calculator For Geologists

How to Calculate Flow at Some Time after Recession Using Nickzom Calculator

Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the flow at some time after recession.

To get the answer and workings of the flow at some time after recession 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 Hydrogeology under Geology

Now, Click on Flow at Some Time After Recession under Hydrogeology

The screenshot below displays the page or activity to enter your values, to get the answer for the flow at some time after recession according to the respective parameters which are the Flow at the Start of Recession (Qo), Recession Constant (a) and Time Since the Start of Recession (t).

How to Calculate and Solve for Flow at Some Time after Recession | Hydrogeology

Now, enter the values appropriately and accordingly for the parameters as required by the Flow at the Start of Recession (Qo) is 12, Recession Constant (a) is 24 and Time Since the Start of Recession (t) is 9.

Finally, Click on Calculate

How to Calculate and Solve for Flow at Some Time after Recession | Hydrogeology
How to Calculate and Solve for Flow at Some Time after Recession | Hydrogeology

As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the flow at some time after recession and presents the formula, workings and steps too.

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