Run-off in Inches by Lacey's Formula Calculator

✖Rainfall Depth is the total amount of rain falling over a catchment area in terms of depth.ⓘ Rainfall Depth [P_RD]			+10% -10%
✖Monsoon Duration Factor depends on the monsoon rains.ⓘ Monsoon Duration Factor [F_m]			+10% -10%
✖Catchment Factor are topography, shape, size, soil type, and land use (paved or roofed areas).ⓘ Catchment Factor [S]			+10% -10%

✖Runoff Depth in Inches is the measuring point in the receiving water results in the arithmetical mean of the values of the total runoff depth.ⓘ Run-off in Inches by Lacey's Formula [R]

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Run-off in Inches by Lacey's Formula

Formula

`"R" = "P"_{"RD"}/(1+(120*"F"_{"m"})/("P"_{"RD"}*"S"))`

Example

`"2.197232in"="5in"/(1+(120*"0.0027")/("5in"*"2"))`

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Run-off in Inches by Lacey's Formula Solution

STEP 0: Pre-Calculation Summary

Formula Used

Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor))
R = P_RD/(1+(120*F_m)/(P_RD*S))
This formula uses 4 Variables

Variables Used

Runoff Depth in Inches - (Measured in Meter) - Runoff Depth in Inches is the measuring point in the receiving water results in the arithmetical mean of the values of the total runoff depth.
Rainfall Depth - (Measured in Meter) - Rainfall Depth is the total amount of rain falling over a catchment area in terms of depth.
Monsoon Duration Factor - Monsoon Duration Factor depends on the monsoon rains.
Catchment Factor - Catchment Factor are topography, shape, size, soil type, and land use (paved or roofed areas).

STEP 1: Convert Input(s) to Base Unit

Rainfall Depth: 5 Inch --> 0.127000000000508 Meter (Check conversion here)
Monsoon Duration Factor: 0.0027 --> No Conversion Required
Catchment Factor: 2 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R = P_RD/(1+(120*F_m)/(P_RD*S)) --> 0.127000000000508/(1+(120*0.0027)/(0.127000000000508*2))

Evaluating ... ...

R = 0.0558096885816633

STEP 3: Convert Result to Output's Unit

0.0558096885816633 Meter -->2.19723183391496 Inch (Check conversion here)

FINAL ANSWER

2.19723183391496 ≈ 2.197232 Inch <-- Runoff Depth in Inches

(Calculation completed in 00.004 seconds)

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Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

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Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

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< 8 Lacey's Formula Calculators

Catchment Factor given Run-off in cm by Lacey's Formula

Go Catchment Factor = (-304.8*Monsoon Duration Factor*Runoff Depth )/(Runoff Depth*Rainfall Depth in Centimeters-Rainfall Depth in Centimeters*Rainfall Depth in Centimeters)

Catchment Factor given Run-off in Inches by Lacey's Formula

Go Catchment Factor = (-120*Monsoon Duration Factor*Runoff Depth in Inches)/(Runoff Depth in Inches*Rainfall Depth-Rainfall Depth*Rainfall Depth)

Monsoon Duration Factor given Run-off in cm by Lacey's Formula

Go Monsoon Duration Factor = (Catchment Factor*(Runoff Depth*Rainfall Depth in Centimeters-Rainfall Depth in Centimeters^2))/(-304.8*Runoff Depth)

Monsoon Duration Factor given Run-off in Inches by Lacey's Formula

Go Monsoon Duration Factor = (Catchment Factor*(Runoff Depth in Inches*Rainfall Depth-Rainfall Depth^2))/(-120*Runoff Depth in Inches)

Run-off in cm by Lacey's Formula

Go Runoff Depth = Rainfall Depth in Centimeters/(1+(304.8*Monsoon Duration Factor)/(Rainfall Depth in Centimeters*Catchment Factor))

Run-off in Inches by Lacey's Formula

Go Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor))

Runoff in cm by Lacey's Formula given Catchment Factor

Go Runoff Depth = Rainfall Depth in Centimeters/(1+(304.8*Monsoon Duration Factor)/(Rainfall Depth in Centimeters*0.25))

Runoff in Inches by Lacey's Formula given Class A catchment

Go Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*0.25))

Run-off in Inches by Lacey's Formula Formula

Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor))
R = P_RD/(1+(120*F_m)/(P_RD*S))

What is Runoff ?

Runoff occurs when there is more water than land can absorb. The excess liquid flows across the surface of the land and into nearby creeks, streams, or ponds.

How to Calculate Run-off in Inches by Lacey's Formula?

Run-off in Inches by Lacey's Formula calculator uses Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor)) to calculate the Runoff Depth in Inches, The Run-off in Inches by Lacey's Formula is defined as the value of runoff depth when we have prior information of other parameters used. Runoff Depth in Inches is denoted by R symbol.

How to calculate Run-off in Inches by Lacey's Formula using this online calculator? To use this online calculator for Run-off in Inches by Lacey's Formula, enter Rainfall Depth (P_RD), Monsoon Duration Factor (F_m) & Catchment Factor (S) and hit the calculate button. Here is how the Run-off in Inches by Lacey's Formula calculation can be explained with given input values -> 0.208113 = 0.127000000000508/(1+(120*0.0027)/(0.127000000000508*2)).

FAQ

What is Run-off in Inches by Lacey's Formula?

The Run-off in Inches by Lacey's Formula is defined as the value of runoff depth when we have prior information of other parameters used and is represented as R = P_RD/(1+(120*F_m)/(P_RD*S)) or Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor)). Rainfall Depth is the total amount of rain falling over a catchment area in terms of depth, Monsoon Duration Factor depends on the monsoon rains & Catchment Factor are topography, shape, size, soil type, and land use (paved or roofed areas).

How to calculate Run-off in Inches by Lacey's Formula?

The Run-off in Inches by Lacey's Formula is defined as the value of runoff depth when we have prior information of other parameters used is calculated using Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*Catchment Factor)). To calculate Run-off in Inches by Lacey's Formula, you need Rainfall Depth (P_RD), Monsoon Duration Factor (F_m) & Catchment Factor (S). With our tool, you need to enter the respective value for Rainfall Depth, Monsoon Duration Factor & Catchment Factor 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 Runoff Depth in Inches?

In this formula, Runoff Depth in Inches uses Rainfall Depth, Monsoon Duration Factor & Catchment Factor. We can use 1 other way(s) to calculate the same, which is/are as follows -

Runoff Depth in Inches = Rainfall Depth/(1+(120*Monsoon Duration Factor)/(Rainfall Depth*0.25))

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