Lag Time given Time of Peak Solution

STEP 0: Pre-Calculation Summary
Formula Used
Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2
tp = Tp-tr/2
This formula uses 3 Variables
Variables Used
Basin Lag - (Measured in Second) - Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.
Time of Peak - (Measured in Second) - Time of Peak is the time interval from the start of rainfall to the peak discharge.
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
Time of Peak: 7 Hour --> 25200 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
tp = Tp-tr/2 --> 25200-7200/2
Evaluating ... ...
tp = 21600
STEP 3: Convert Result to Output's Unit
21600 Second -->6 Hour (Check conversion here)
FINAL ANSWER
6 Hour <-- Basin Lag
(Calculation completed in 00.020 seconds)

Credits

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Coorg Institute of Technology (CIT), Coorg
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13 SCS Triangular Unit Hydrograph Calculators

Time of Concentration given Time of Peak
Go Time of Concentration = (Time of Peak-(Standard Duration of Effective Rainfall/2))/0.6
Duration of Effective Rainfall for given Time of Peak
Go Standard Duration of Effective Rainfall = 2*(Time of Peak-0.6*Time of Concentration)
Time of Peak given Time of Concentration
Go Time of Peak = 0.6*Time of Concentration+Standard Duration of Effective Rainfall/2
Duration of Effective Rainfall given Time of Peak
Go Standard Duration of Effective Rainfall = 2*(Time of Peak-Basin Lag)
Time of Peak or Time of Rise
Go Time of Peak = (Standard Duration of Effective Rainfall/2)+Basin Lag
Lag Time given Time of Peak
Go Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2
Catchment Area given Peak Discharge
Go Area of Catchment = Time of Peak*Peak Discharge/2.08
Time of Peak given Peak Discharge
Go Time of Peak = 2.08*Area of Catchment/Peak Discharge
Peak Discharge
Go Peak Discharge = 2.08*Area of Catchment/Time of Peak
Time of Recession as Suggested in SCS
Go Time of Recession = 1.67*Time of Peak
Time of Peak given Time of Recession
Go Time of Peak = Time of Recession/1.67
Base Length in SCS Triangular Unit Hydrograph
Go Base Length = 2.67*Time of Peak
Time of Peak given Base Length
Go Time of Peak = Base Length/2.67

Lag Time given Time of Peak Formula

Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2
tp = Tp-tr/2

What is Basin Lag?

Basin lag time, 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.

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 Lag Time given Time of Peak?

Lag Time given Time of Peak calculator uses Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2 to calculate the Basin Lag, The Lag Time given Time of Peak formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall. Basin Lag is denoted by tp symbol.

How to calculate Lag Time given Time of Peak using this online calculator? To use this online calculator for Lag Time given Time of Peak, enter Time of Peak (Tp) & Standard Duration of Effective Rainfall (tr) and hit the calculate button. Here is how the Lag Time given Time of Peak calculation can be explained with given input values -> 0.001793 = 25200-7200/2.

FAQ

What is Lag Time given Time of Peak?
The Lag Time given Time of Peak formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and is represented as tp = Tp-tr/2 or Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2. Time of Peak is the time interval from the start of rainfall to the peak discharge & Standard Duration of Effective Rainfall as adopted by Snyder.
How to calculate Lag Time given Time of Peak?
The Lag Time given Time of Peak formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall is calculated using Basin Lag = Time of Peak-Standard Duration of Effective Rainfall/2. To calculate Lag Time given Time of Peak, you need Time of Peak (Tp) & Standard Duration of Effective Rainfall (tr). With our tool, you need to enter the respective value for Time of Peak & 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.
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