Standard Effective Duration given Modified Basin Lag Calculator

✖Modified Basin Lag for an effective duration rainfall.ⓘ Modified Basin Lag [t'_p]			+10% -10%
✖Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.ⓘ Basin Lag [t_p]			+10% -10%
✖Non-standard rainfall duration to derive modified basin lag.ⓘ Non-standard rainfall duration [t_R]			+10% -10%

✖Standard Duration of Effective Rainfall as adopted by Snyder.ⓘ Standard Effective Duration given Modified Basin Lag [t_r]

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Formula

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Standard Effective Duration given Modified Basin Lag

Formula

t r = - (4 \cdot (t' p - t p) - t R)

Example

1.12 h = - (4 \cdot (6.22 h - 6 h) - 2 h)

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Standard Effective Duration given Modified Basin Lag Solution

STEP 0: Pre-Calculation Summary

Formula Used

Standard Duration of Effective Rainfall = -(4*(Modified Basin Lag-Basin Lag)-Non-standard rainfall duration)
t_r = -(4*(t'_p-t_p)-t_R)
This formula uses 4 Variables

Variables Used

Standard Duration of Effective Rainfall - (Measured in Second) - Standard Duration of Effective Rainfall as adopted by Snyder.
Modified Basin Lag - (Measured in Second) - Modified Basin Lag for an effective duration rainfall.
Basin Lag - (Measured in Second) - Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.
Non-standard rainfall duration - (Measured in Second) - Non-standard rainfall duration to derive modified basin lag.

STEP 1: Convert Input(s) to Base Unit

Modified Basin Lag: 6.22 Hour --> 22392 Second (Check conversion here)
Basin Lag: 6 Hour --> 21600 Second (Check conversion here)
Non-standard rainfall duration: 2 Hour --> 7200 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t_r = -(4*(t'_p-t_p)-t_R) --> -(4*(22392-21600)-7200)

Evaluating ... ...

t_r = 4032

STEP 3: Convert Result to Output's Unit

4032 Second -->1.12 Hour (Check conversion here)

FINAL ANSWER

1.12 Hour <-- Standard Duration of Effective Rainfall

(Calculation completed in 00.004 seconds)

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< Synder's Synthetic Unit Hydrograph Calculators

Regional Constant given Peak Discharge for Nonstandard Effective Rainfall

Go Regional Constant (Snyder) = Peak Discharge*Modified Basin Lag/(2.78*Area of Catchment)

Peak Discharge for Nonstandard Effective Rainfall

Go Peak Discharge = 2.78*Regional Constant (Snyder)*Area of Catchment/Modified Basin Lag

Catchment Area given Peak Discharge for Nonstandard Effective Rainfall

Go Area of Catchment = Peak Discharge*Modified Basin Lag/(2.78*Regional Constant)

Modified Basin Lag given Peak Discharge for Nonstandard Effective Rainfall

Go Modified Basin Lag = 2.78*Regional Constant*Area of Catchment/Peak Discharge

Standard Effective Duration given Modified Basin Lag Formula

Standard Duration of Effective Rainfall = -(4*(Modified Basin Lag-Basin Lag)-Non-standard rainfall duration)
t_r = -(4*(t'_p-t_p)-t_R)

What is Lag Time in hydrology?

The lag time is the delay between the maximum rainfall amount and the peak discharge. The shape of a hydrograph varies in each river basin and each storm event. This increases lag time. The peak discharge is also lower as it takes water longer to reach the river channel.

What is Baseflow?

Baseflow is a portion of streamflow that is not directly generated from the excess rainfall during a storm event. In other words, this is the flow that would exist in the stream without the contribution of direct runoff from the rainfall.

How to Calculate Standard Effective Duration given Modified Basin Lag?

Standard Effective Duration given Modified Basin Lag calculator uses Standard Duration of Effective Rainfall = -(4*(Modified Basin Lag-Basin Lag)-Non-standard rainfall duration) to calculate the Standard Duration of Effective Rainfall, The Standard Effective Duration given Modified Basin Lag formula is defined as the time interval of precipitation to be equal to the difference between total rainfall and actual evapotranspiration. Standard Duration of Effective Rainfall is denoted by t_r symbol.

How to calculate Standard Effective Duration given Modified Basin Lag using this online calculator? To use this online calculator for Standard Effective Duration given Modified Basin Lag, enter Modified Basin Lag (t'_p), Basin Lag (t_p) & Non-standard rainfall duration (t_R) and hit the calculate button. Here is how the Standard Effective Duration given Modified Basin Lag calculation can be explained with given input values -> 0.000311 = -(4*(22392-21600)-7200).

FAQ

What is Standard Effective Duration given Modified Basin Lag?

The Standard Effective Duration given Modified Basin Lag formula is defined as the time interval of precipitation to be equal to the difference between total rainfall and actual evapotranspiration and is represented as t_r = -(4*(t'_p-t_p)-t_R) or Standard Duration of Effective Rainfall = -(4*(Modified Basin Lag-Basin Lag)-Non-standard rainfall duration). Modified Basin Lag for an effective duration rainfall, Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall & Non-standard rainfall duration to derive modified basin lag.

How to calculate Standard Effective Duration given Modified Basin Lag?

The Standard Effective Duration given Modified Basin Lag formula is defined as the time interval of precipitation to be equal to the difference between total rainfall and actual evapotranspiration is calculated using Standard Duration of Effective Rainfall = -(4*(Modified Basin Lag-Basin Lag)-Non-standard rainfall duration). To calculate Standard Effective Duration given Modified Basin Lag, you need Modified Basin Lag (t'_p), Basin Lag (t_p) & Non-standard rainfall duration (t_R). With our tool, you need to enter the respective value for Modified Basin Lag, Basin Lag & Non-standard rainfall duration 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 Standard Duration of Effective Rainfall?

In this formula, Standard Duration of Effective Rainfall uses Modified Basin Lag, Basin Lag & Non-standard rainfall duration. We can use 2 other way(s) to calculate the same, which is/are as follows -

Standard Duration of Effective Rainfall = Basin Lag/5.5
Standard Duration of Effective Rainfall = Non-standard rainfall duration-4*(Modified Basin Lag-Basin Lag)

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