Watershed Area given Form Factor Calculator

✖Form Factor is a ratio of watershed area to the square of the length of the watershed.ⓘ Form Factor [F_f]			+10% -10%
✖Watershed Length is distance from outlet to watershed boundary along main channel.ⓘ Watershed Length [L]			+10% -10%

✖Watershed Area is an isolated area with a well demarcated boundary line, draining the rainwater to a single outlet.ⓘ Watershed Area given Form Factor [A]

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Formula

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Watershed Area given Form Factor

Formula

`"A" = "F"_{"f"}*"L"^2`

Example

`"20m²"="0.008"*("50m")^2`

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Watershed Area given Form Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Watershed Area = Form Factor*Watershed Length^2
A = F_f*L^2
This formula uses 3 Variables

Variables Used

Watershed Area - (Measured in Square Meter) - Watershed Area is an isolated area with a well demarcated boundary line, draining the rainwater to a single outlet.
Form Factor - Form Factor is a ratio of watershed area to the square of the length of the watershed.
Watershed Length - (Measured in Meter) - Watershed Length is distance from outlet to watershed boundary along main channel.

STEP 1: Convert Input(s) to Base Unit

Form Factor: 0.008 --> No Conversion Required
Watershed Length: 50 Meter --> 50 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A = F_f*L^2 --> 0.008*50^2

Evaluating ... ...

A = 20

STEP 3: Convert Result to Output's Unit

20 Square Meter --> No Conversion Required

FINAL ANSWER

20 Square Meter <-- Watershed Area

(Calculation completed in 00.004 seconds)

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Created by Rachana B V

The National Institute of Engineering (NIE), Mysuru

Rachana B V has created this Calculator and 25+ more calculators!

Verified by Ayush Singh

Gautam Buddha University (GBU), Greater Noida

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< 10+ Form Factors Calculators

Watershed Length given Shape Factor

Go Watershed Length = sqrt(Shape Factor*Catchment Area)

Watershed Length given Form Factor

Go Watershed Length = (Watershed Area/Form Factor)^(1/2)

Shape Factor given Watershed Length

Go Shape Factor = (Watershed Length)^2/Catchment Area

Watershed Area given Shape Factor

Go Watershed Area = (Watershed Length^2)/Shape Factor

Form Factor using Watershed Dimensions

Go Form Factor = Watershed Area/Watershed Length^2

Watershed Area given Form Factor

Go Watershed Area = Form Factor*Watershed Length^2

Aerial Length of Basin given Form Factor

Go Length of Basin = Width of Basin/Form Factor

Form Factor given Width of Basin

Go Form Factor = Width of Basin/Length of Basin

Width of Basin given Form Factor

Go Width of Basin = Form Factor*Length of Basin

Form Factor given Shape Factor

Go Form Factor = 1/Shape Factor

Watershed Area given Form Factor Formula

Watershed Area = Form Factor*Watershed Length^2
A = F_f*L^2

What is Form Factor?

Form factor is defined as the ratio of the basin area to the square of the basin length. The value of the form factor would always be less than 0.754 (for a perfectly circular watershed). The smaller the value of the form factor, the more elongated will be the watershed.

What determines the Shape of a Watershed?

The Shape of a Watershed influences the shape of its characteristic hydrograph. For example, a long-shaped watershed generates, for the same rainfall, a lower outlet flow, as the concentration time is higher.

How to Calculate Watershed Area given Form Factor?

Watershed Area given Form Factor calculator uses Watershed Area = Form Factor*Watershed Length^2 to calculate the Watershed Area, The Watershed Area given Form Factor formula is defined as the land drained by a river, modified by the Form Factor representing shape irregularities in drainage. Watershed Area is denoted by A symbol.

How to calculate Watershed Area given Form Factor using this online calculator? To use this online calculator for Watershed Area given Form Factor, enter Form Factor (F_f) & Watershed Length (L) and hit the calculate button. Here is how the Watershed Area given Form Factor calculation can be explained with given input values -> 20 = 0.008*50^2.

FAQ

What is Watershed Area given Form Factor?

The Watershed Area given Form Factor formula is defined as the land drained by a river, modified by the Form Factor representing shape irregularities in drainage and is represented as A = F_f*L^2 or Watershed Area = Form Factor*Watershed Length^2. Form Factor is a ratio of watershed area to the square of the length of the watershed & Watershed Length is distance from outlet to watershed boundary along main channel.

How to calculate Watershed Area given Form Factor?

The Watershed Area given Form Factor formula is defined as the land drained by a river, modified by the Form Factor representing shape irregularities in drainage is calculated using Watershed Area = Form Factor*Watershed Length^2. To calculate Watershed Area given Form Factor, you need Form Factor (F_f) & Watershed Length (L). With our tool, you need to enter the respective value for Form Factor & Watershed Length 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 Watershed Area?

In this formula, Watershed Area uses Form Factor & Watershed Length. We can use 1 other way(s) to calculate the same, which is/are as follows -

Watershed Area = (Watershed Length^2)/Shape Factor

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