# How to Calculate and Solve for Drainage Density | Soil and Water Conservation

**Last Updated on April 18, 2024**

The image above represents drainage density. To calculate drainage density, two essential parameters are needed and these parameters are **Total length of all stream channel (L) **and **Area of basin (A).**

The formula for calculating drainage density:

D_{b} = ^{L} / _{A}

Where:

D_{b} = Drainage Density

L = Total Length of all Stream Channel

A = Area of Basin

Let’s solve an example;

Find the drainage density when the total length of all stream channel is 48 and the area of basin is 4.

This implies that;

L = Total Length of all Stream Channel = 48

A = Area of Basin = 4

That is, D_{b} = ^{L} / _{A}

D_{b} = ^{48} / _{4}

D_{b} = 12

Therefore, the **drainage density **is **12.**

**Calculating for Total Length of all Stream Channel when the Drainage Density and the Area of Basin are Given**

L = D_{b} x A

Where;

L = Total Length of all Stream Channel

D_{b} = Drainage Density

A = Area of Basin

Let’s solve an example;

Find the total length of all stream channel when the drainage density is 10 and the area of basin is 2.

This implies that;

D_{b} = Drainage Density = 10

A = Area of Basin = 2

So, L = D_{b} x A

L = 10 x 2

L = 20

Therefore, the **total length of all stream channel **is **20.**

Read more: How to Calculate and Solve for Discharge | Soil and Water Conservation

**Calculating for the Area of Basin when the Drainage Density and the Total Length of all Stream Channel are Given**

A = ^{L} / _{Db}

Where;

A = Area of Basin

D_{b} = Drainage Density

L = Total Length of all Stream Channel

Let’s solve an example;

Find the area of basin when the drainage density is 5 and the total length of all stream channel is 50.

This implies that;

D_{b} = Drainage Density = 5

L = Total Length of all Stream Channel = 50

Then, A = ^{L} / _{Db}

A = ^{50} / _{5}

A = 10

Therefore, the **area of basin **is **10.**

**How to Calculate Drainage Density in Soil and Water Conservation Using Nickzom Calculator**

Nickzom Calculator – **The Calculator Encyclopedia** is capable of calculating the drainage density.

To get the answer and workings of the drainage density 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 **Agricultural**** **under **Engineering****.**

Now, Click on **Soil and Water Conservation **under **Agricultural**

Now, Click on **Drainage Density **under **Soil and Water Conservation**

The screenshot below displays the page or activity to enter your values, to get the answer for the drainage density according to the respective parameters which is the **Total length of all stream channel (L) **and **Area of basin (A).**

Now, enter the values appropriately and accordingly for the parameters as required by the **Total length of all stream channel (L) **is **48 **and **Area of basin (A)** is **4**.

Finally, Click on Calculate

As you can see from the screenshot above, **Nickzom Calculator**– The Calculator Encyclopedia solves for the drainage density and presents the formula, workings and steps too.