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Time of Peak or Time of Rise Formula

GoTime of Peak given Time of Recession Formula

GoTime of Peak given Peak Discharge Formula

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Time of Peak is the time interval from the start of rainfall to the peak discharge. Check FAQs

T p = (\frac{t r}{2}) + t p

T_p - Time of Peak?t_r - Standard Duration of Effective Rainfall?t_p - Basin Lag?

Time of Peak or Time of Rise Example

With values

With units

Only example

Here is how the Time of Peak or Time of Rise equation looks like with Values.

Here is how the Time of Peak or Time of Rise equation looks like with Units.

Here is how the Time of Peak or Time of Rise equation looks like.

7 = (\frac{2}{2}) + 6

7h = (\frac{2h}{2}) + 6h

7 = (\frac{2}{2}) + 6

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Time of Peak or Time of Rise Solution

Follow our step by step solution on how to calculate Time of Peak or Time of Rise?

FIRST Step Consider the formula

T p = (\frac{t r}{2}) + t p

Next Step Substitute values of Variables

∴

T p = (\frac{2h}{2}) + 6h

Next Step Convert Units

∴

T p = (\frac{7200s}{2}) + 21600s

Next Step Prepare to Evaluate

∴

T p = (\frac{7200}{2}) + 21600

Next Step Evaluate

∴

T p = 25200s

LAST Step Convert to Output's Unit

∴

T p = 7h

Time of Peak or Time of Rise Formula Elements

Variables

Time of Peak

Time of Peak is the time interval from the start of rainfall to the peak discharge.

Symbol: T_p

Measurement: TimeUnit: h

Note: Value should be greater than 0.

Formulas to find Time of Peak

Standard Duration of Effective Rainfall

Standard Duration of Effective Rainfall as adopted by Snyder.

Symbol: t_r

Measurement: TimeUnit: h

Note: Value should be greater than 0.

Formulas to find Standard Duration of Effective Rainfall

Basin Lag

Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.

Symbol: t_p

Measurement: TimeUnit: h

Note: Value should be greater than 0.

Formulas to find Basin Lag

Other Formulas to find Time of Peak

Go Time of Peak given Time of Recession

T p = \frac{Tc}{1.67}

Go Time of Peak given Peak Discharge

T p = 2.08 \cdot \frac{A}{Q p}

Go Time of Peak given Time of Concentration

T p = 0.6 \cdot t c + \frac{t r}{2}

Go Time of Peak given Base Length

T p = \frac{T b}{2.67}

Other formulas in SCS Triangular Unit Hydrograph category

Go Lag Time given Time of Peak

t p = T p - \frac{t r}{2}

Go Time of Recession as Suggested in SCS

Tc = 1.67 \cdot T p

Go Peak Discharge

Q p = 2.08 \cdot \frac{A}{T p}

Go Catchment Area given Peak Discharge

A = T p \cdot \frac{Q p}{2.08}

How to Evaluate Time of Peak or Time of Rise?

Time of Peak or Time of Rise evaluator uses Time of Peak = (Standard Duration of Effective Rainfall/2)+Basin Lag to evaluate the Time of Peak, The Time of Peak or Time of Rise formula is defined as the time interval from the start of rainfall to the peak discharge. Time of Peak is denoted by T_p symbol.

How to evaluate Time of Peak or Time of Rise using this online evaluator? To use this online evaluator for Time of Peak or Time of Rise, enter Standard Duration of Effective Rainfall (t_r) & Basin Lag (t_p) and hit the calculate button.

FAQs on Time of Peak or Time of Rise

What is the formula to find Time of Peak or Time of Rise?

The formula of Time of Peak or Time of Rise is expressed as Time of Peak = (Standard Duration of Effective Rainfall/2)+Basin Lag. Here is an example- 0.001818 = (7200/2)+21600.

How to calculate Time of Peak or Time of Rise?

With Standard Duration of Effective Rainfall (t_r) & Basin Lag (t_p) we can find Time of Peak or Time of Rise using the formula - Time of Peak = (Standard Duration of Effective Rainfall/2)+Basin Lag.

What are the other ways to Calculate Time of Peak?

Here are the different ways to Calculate Time of Peak-

Time of Peak=Time of Recession/1.67
Time of Peak=2.08*Area of Catchment/Peak Discharge
Time of Peak=0.6*Time of Concentration+Standard Duration of Effective Rainfall/2

Can the Time of Peak or Time of Rise be negative?

No, the Time of Peak or Time of Rise, measured in Time cannot be negative.

Which unit is used to measure Time of Peak or Time of Rise?

Time of Peak or Time of Rise is usually measured using the Hour[h] for Time. Second[h], Millisecond[h], Microsecond[h] are the few other units in which Time of Peak or Time of Rise can be measured.

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Time of Peak or Time of Rise Formula

​GoTime of Peak given Time of Recession Formula

​GoTime of Peak given Peak Discharge Formula

Time of Peak or Time of Rise Example

Time of Peak or Time of Rise Solution

Time of Peak or Time of Rise Formula Elements

Other Formulas to find Time of Peak

Other formulas in SCS Triangular Unit Hydrograph category

How to Evaluate Time of Peak or Time of Rise?

FAQs on Time of Peak or Time of Rise

Variable Name

GoTime of Peak given Time of Recession Formula

GoTime of Peak given Peak Discharge Formula