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Basin Lag given Peak Discharge Formula

GoBasin Lag given Modified Basin Lag Formula

GoBasin Lag given Modified Basin Lag for Effective Duration Formula

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

t p = 2.78 \cdot C p \cdot \frac{A}{Q p}

t_p - Basin Lag?C_p - Regional Constant (Snyder)?A - Area of Catchment?Q_p - Peak Discharge?

Basin Lag given Peak Discharge Example

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Here is how the Basin Lag given Peak Discharge equation looks like with Values.

Here is how the Basin Lag given Peak Discharge equation looks like with Units.

Here is how the Basin Lag given Peak Discharge equation looks like.

5.6162 = 2.78 \cdot 0.6 \cdot \frac{3}{0.891}

5.6162h = 2.78 \cdot 0.6 \cdot \frac{3km²}{0.891m³/s}

5.6162 = 2.78 \cdot 0.6 \cdot \frac{3}{0.891}

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Basin Lag given Peak Discharge Solution

Follow our step by step solution on how to calculate Basin Lag given Peak Discharge?

FIRST Step Consider the formula

t p = 2.78 \cdot C p \cdot \frac{A}{Q p}

Next Step Substitute values of Variables

∴

t p = 2.78 \cdot 0.6 \cdot \frac{3km²}{0.891m³/s}

Next Step Prepare to Evaluate

∴

t p = 2.78 \cdot 0.6 \cdot \frac{3}{0.891}

Next Step Evaluate

∴

t p = 20218.1818181818s

Next Step Convert to Output's Unit

∴

t p = 5.61616161616162h

LAST Step Rounding Answer

∴

t p = 5.6162h

Basin Lag given Peak Discharge Formula Elements

Variables

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

Regional Constant (Snyder)

Regional Constant (Snyder) is considered an indication of the retention and storage capacity of the watershed.

Symbol: C_p

Measurement: NAUnit: Unitless

Note: Value should be between 0.56 to 0.69.

Formulas to find Regional Constant (Snyder)

Area of Catchment

Area of Catchment is the geographical area from which water flows into a particular point, such as a well, stream, or reservoir.

Symbol: A

Measurement: AreaUnit: km²

Note: Value should be greater than 0.

Formulas to find Area of Catchment

Peak Discharge

Peak Discharge is the maximum volume flow rate passing a particular location during an event.

Symbol: Q_p

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value can be positive or negative.

Formulas to find Peak Discharge

Other Formulas to find Basin Lag

Go Basin Lag given Modified Basin Lag

t p = \frac{t' p - (\frac{t R}{4})}{\frac{21}{22}}

Go Basin Lag given Modified Basin Lag for Effective Duration

t p = \frac{4 \cdot t' p + t r - t R}{4}

Go Basin Lag given Standard Duration of Effective Rainfall

t p = 5.5 \cdot t r

Go Snyder's Equation

t p = C r \cdot {(L b \cdot L ca)}^{0.3}

Other formulas in Synder's Synthetic Unit Hydrograph category

Go Peak Discharge for Nonstandard Effective Rainfall

Q p = 2.78 \cdot C p \cdot \frac{A}{t' p}

Go Regional Constant given Peak Discharge for Nonstandard Effective Rainfall

C p = Q p \cdot \frac{t' p}{2.78 \cdot A}

Go Catchment Area given Peak Discharge for Nonstandard Effective Rainfall

A = Q p \cdot \frac{t' p}{2.78 \cdot C r}

Go Modified Basin Lag given Peak Discharge for Nonstandard Effective Rainfall

t' p = 2.78 \cdot C r \cdot \frac{A}{Q p}

How to Evaluate Basin Lag given Peak Discharge?

Basin Lag given Peak Discharge evaluator uses Basin Lag = 2.78*Regional Constant (Snyder)*Area of Catchment/Peak Discharge to evaluate the Basin Lag, The Basin Lag given Peak Discharge formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and of the storm runoff hydrograph, which is an important factor in determining the time to peak of the unit. Basin Lag is denoted by t_p symbol.

How to evaluate Basin Lag given Peak Discharge using this online evaluator? To use this online evaluator for Basin Lag given Peak Discharge, enter Regional Constant (Snyder) (C_p), Area of Catchment (A) & Peak Discharge (Q_p) and hit the calculate button.

FAQs on Basin Lag given Peak Discharge

What is the formula to find Basin Lag given Peak Discharge?

The formula of Basin Lag given Peak Discharge is expressed as Basin Lag = 2.78*Regional Constant (Snyder)*Area of Catchment/Peak Discharge. Here is an example- 0.00156 = 2.78*0.6*3000000/0.891.

How to calculate Basin Lag given Peak Discharge?

With Regional Constant (Snyder) (C_p), Area of Catchment (A) & Peak Discharge (Q_p) we can find Basin Lag given Peak Discharge using the formula - Basin Lag = 2.78*Regional Constant (Snyder)*Area of Catchment/Peak Discharge.

What are the other ways to Calculate Basin Lag?

Here are the different ways to Calculate Basin Lag-

Basin Lag=(Modified Basin Lag-(Non-standard rainfall duration/4))/(21/22)
Basin Lag=(4*Modified Basin Lag+Standard Duration of Effective Rainfall-Non-standard rainfall duration)/4
Basin Lag=5.5*Standard Duration of Effective Rainfall

Can the Basin Lag given Peak Discharge be negative?

No, the Basin Lag given Peak Discharge, measured in Time cannot be negative.

Which unit is used to measure Basin Lag given Peak Discharge?

Basin Lag given Peak Discharge is usually measured using the Hour[h] for Time. Second[h], Millisecond[h], Microsecond[h] are the few other units in which Basin Lag given Peak Discharge can be measured.

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