Modified Equation for Basin Lag for Effective Duration Calculator

✖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 Duration of Effective Rainfall [t_r]			+10% -10%

✖Modified Basin Lag for an effective duration rainfall.ⓘ Modified Equation for Basin Lag for Effective Duration [t'_p]

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Modified Equation for Basin Lag for Effective Duration Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
Standard Duration of Effective Rainfall - (Measured in Second) - Standard Duration of Effective Rainfall as adopted by Snyder.

STEP 1: Convert Input(s) to Base Unit

Basin Lag: 6 Hour --> 21600 Second (Check conversion here)
Non-standard rainfall duration: 2 Hour --> 7200 Second (Check conversion here)
Standard Duration of Effective Rainfall: 2 Hour --> 7200 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t'_p = t_p+(t_R-t_r)/4 --> 21600+(7200-7200)/4

Evaluating ... ...

t'_p = 21600

STEP 3: Convert Result to Output's Unit

21600 Second -->6 Hour (Check conversion here)

FINAL ANSWER

6 Hour <-- Modified Basin Lag

(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

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

Peak Discharge for Nonstandard Effective Rainfall

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

Catchment Area given Peak Discharge for Nonstandard Effective Rainfall

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

Modified Basin Lag given Peak Discharge for Nonstandard Effective Rainfall

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

Modified Equation for Basin Lag for Effective Duration Formula

LaTeX Go

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

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 Modified Equation for Basin Lag for Effective Duration?

Modified Equation for Basin Lag for Effective Duration calculator uses Modified Basin Lag = Basin Lag+(Non-standard rainfall duration-Standard Duration of Effective Rainfall)/4 to calculate the Modified Basin Lag, The Modified Equation for Basin Lag for Effective Duration formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and of the storm runoff hydrograph, is an important factor in determining the time to peak of the unit, hydrograph, and the intensity of peak discharge. Modified Basin Lag is denoted by t'_p symbol.

How to calculate Modified Equation for Basin Lag for Effective Duration using this online calculator? To use this online calculator for Modified Equation for Basin Lag for Effective Duration, enter Basin Lag (t_p), Non-standard rainfall duration (t_R) & Standard Duration of Effective Rainfall (t_r) and hit the calculate button. Here is how the Modified Equation for Basin Lag for Effective Duration calculation can be explained with given input values -> 0.00173 = 21600+(7200-7200)/4.

FAQ

What is Modified Equation for Basin Lag for Effective Duration?

The Modified Equation for Basin Lag for Effective Duration formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and of the storm runoff hydrograph, is an important factor in determining the time to peak of the unit, hydrograph, and the intensity of peak discharge and is represented as t'_p = t_p+(t_R-t_r)/4 or Modified Basin Lag = Basin Lag+(Non-standard rainfall duration-Standard Duration of Effective Rainfall)/4. 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 & Standard Duration of Effective Rainfall as adopted by Snyder.

How to calculate Modified Equation for Basin Lag for Effective Duration?

The Modified Equation for Basin Lag for Effective Duration formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and of the storm runoff hydrograph, is an important factor in determining the time to peak of the unit, hydrograph, and the intensity of peak discharge is calculated using Modified Basin Lag = Basin Lag+(Non-standard rainfall duration-Standard Duration of Effective Rainfall)/4. To calculate Modified Equation for Basin Lag for Effective Duration, you need Basin Lag (t_p), Non-standard rainfall duration (t_R) & Standard Duration of Effective Rainfall (t_r). With our tool, you need to enter the respective value for Basin Lag, Non-standard rainfall duration & Standard Duration of Effective Rainfall 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 Modified Basin Lag?

In this formula, Modified Basin Lag uses Basin Lag, Non-standard rainfall duration & Standard Duration of Effective Rainfall. We can use 3 other way(s) to calculate the same, which is/are as follows -

Modified Basin Lag = 2.78*Regional Constant*Area of Catchment/Peak Discharge
Modified Basin Lag = (21*Basin Lag/22)+(Non-standard rainfall duration/4)
Modified Basin Lag = (Time Base-72)/3

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