Duration of Rainfall Excess given Total Runoff Depth Solution

STEP 0: Pre-Calculation Summary
Formula Used
Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index
te = (P-Rd)/φ
This formula uses 4 Variables
Variables Used
Duration of Rainfall Excess - (Measured in Hour) - Duration of Rainfall Excess is the total time in which the rainfall intensity the greater than the average rate of infiltration (in hours).
Total Storm Precipitation - (Measured in Centimeter) - Total Storm Precipitation is the annual precipitation of the current year.
Total Direct Runoff - (Measured in Centimeter) - Total Direct Runoff is the runoff entering stream channels promptly after rainfall or snowmelt.
Φ-Index - Φ-Index of a catchment is the constant infiltration capacity that would yield the actual total runoff for a given rainfall amount.
STEP 1: Convert Input(s) to Base Unit
Total Storm Precipitation: 118 Centimeter --> 118 Centimeter No Conversion Required
Total Direct Runoff: 117.88 Centimeter --> 117.88 Centimeter No Conversion Required
Φ-Index: 0.0279 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
te = (P-Rd)/φ --> (118-117.88)/0.0279
Evaluating ... ...
te = 4.30107526881737
STEP 3: Convert Result to Output's Unit
15483.8709677425 Second -->4.30107526881737 Hour (Check conversion here)
FINAL ANSWER
4.30107526881737 4.301075 Hour <-- Duration of Rainfall Excess
(Calculation completed in 00.004 seconds)

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11 Φ-Index Calculators

Precipitation given Total Runoff Depth for Practical Use
Go Total Storm Precipitation = Total Direct Runoff+(Φ-Index*Duration of Rainfall Excess)
Duration of Rainfall Excess given Total Runoff Depth
Go Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index
Phi Index given Total Runoff Depth
Go Φ-Index = (Total Storm Precipitation-Total Direct Runoff)/Duration of Rainfall Excess
Total Direct Runoff Depth
Go Total Direct Runoff = Total Storm Precipitation-(Φ-Index*Duration of Rainfall Excess)
Runoff to Determine Phi Index for Practical Use
Go Runoff in Cm from 24h Rainfall = Coefficient Depending on Soil Type*Intensity of Rainfall^1.2
Rainfall Intensity for Phi Index of Practical Use
Go Intensity of Rainfall = (Φ-Index*24)+Runoff in Cm from 24h Rainfall
Runoff for Phi Index for Practical Use
Go Runoff in Cm from 24h Rainfall = Intensity of Rainfall-(Φ-Index*24)
Phi Index for Practical Use
Go Φ-Index = (Intensity of Rainfall-Runoff in Cm from 24h Rainfall)/24
Pulses of Time Interval from Rainfall Hyetograph
Go Pulses of Time Interval = Duration/Time Interval
Duration of Rainfall from Rainfall Hyetograph
Go Duration = Pulses of Time Interval*Time Interval
Time Interval of Rainfall Hyetograph
Go Time Interval = Duration/Pulses of Time Interval

Duration of Rainfall Excess given Total Runoff Depth Formula

Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index
te = (P-Rd)/φ

What is Runoff?

Runoff is the flow of water occurring on the ground surface when excess rainwater, storm water, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil.

What is Precipitation?

Precipitation is any product of the condensation of atmospheric water vapor that falls under gravitational pull from clouds. The main forms of precipitation include drizzling, rain, sleet, snow, ice pellets, graupel and hail.

How to Calculate Duration of Rainfall Excess given Total Runoff Depth?

Duration of Rainfall Excess given Total Runoff Depth calculator uses Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index to calculate the Duration of Rainfall Excess, The Duration of Rainfall Excess given Total Runoff Depth formula is defined as a process controlled at the surface of the soil. This occurs when rainfall reaches the soil at a rate in excess of the soil's ability to absorb, which is called infiltrability. Duration of Rainfall Excess is denoted by te symbol.

How to calculate Duration of Rainfall Excess given Total Runoff Depth using this online calculator? To use this online calculator for Duration of Rainfall Excess given Total Runoff Depth, enter Total Storm Precipitation (P), Total Direct Runoff (Rd) & Φ-Index (φ) and hit the calculate button. Here is how the Duration of Rainfall Excess given Total Runoff Depth calculation can be explained with given input values -> 0.001195 = (1.18-1.1788)/0.0279.

FAQ

What is Duration of Rainfall Excess given Total Runoff Depth?
The Duration of Rainfall Excess given Total Runoff Depth formula is defined as a process controlled at the surface of the soil. This occurs when rainfall reaches the soil at a rate in excess of the soil's ability to absorb, which is called infiltrability and is represented as te = (P-Rd)/φ or Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index. Total Storm Precipitation is the annual precipitation of the current year, Total Direct Runoff is the runoff entering stream channels promptly after rainfall or snowmelt & Φ-Index of a catchment is the constant infiltration capacity that would yield the actual total runoff for a given rainfall amount.
How to calculate Duration of Rainfall Excess given Total Runoff Depth?
The Duration of Rainfall Excess given Total Runoff Depth formula is defined as a process controlled at the surface of the soil. This occurs when rainfall reaches the soil at a rate in excess of the soil's ability to absorb, which is called infiltrability is calculated using Duration of Rainfall Excess = (Total Storm Precipitation-Total Direct Runoff)/Φ-Index. To calculate Duration of Rainfall Excess given Total Runoff Depth, you need Total Storm Precipitation (P), Total Direct Runoff (Rd) & Φ-Index (φ). With our tool, you need to enter the respective value for Total Storm Precipitation, Total Direct Runoff & Φ-Index and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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