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Snyder's Equation 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 = C r \cdot {(L b \cdot L ca)}^{0.3}

t_p - Basin Lag?C_r - Regional Constant?L_b - Length of Basin?L_ca - Distance along Main Water Course?

Snyder's Equation Example

With values

With units

Only example

Here is how the Snyder's Equation equation looks like with Values.

Here is how the Snyder's Equation equation looks like with Units.

Here is how the Snyder's Equation equation looks like.

1.0746 = 1.46 \cdot {(30 \cdot 12)}^{0.3}

1.0746h = 1.46 \cdot {(30m \cdot 12km)}^{0.3}

1.0746 = 1.46 \cdot {(30 \cdot 12)}^{0.3}

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Snyder's Equation Solution

Follow our step by step solution on how to calculate Snyder's Equation?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

t p = 1.46 \cdot {(30m \cdot 12km)}^{0.3}

Next Step Convert Units

∴

t p = 1.46 \cdot {(0.03km \cdot 12km)}^{0.3}

Next Step Prepare to Evaluate

∴

t p = 1.46 \cdot {(0.03 \cdot 12)}^{0.3}

Next Step Evaluate

∴

t p = 3868.53122633053s

Next Step Convert to Output's Unit

∴

t p = 1.07459200731404h

LAST Step Rounding Answer

∴

t p = 1.0746h

Snyder's Equation 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

Regional Constant representing watershed slope and storage effect.

Symbol: C_r

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Regional Constant

Length of Basin

Length of Basin refers to the distance from one end of the basin to the other, typically measured along the longest axis.

Symbol: L_b

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length of Basin

Distance along Main Water Course

Distance along Main Water Course from the gauging station to a point opposite to the watershed centroid in km.

Symbol: L_ca

Measurement: LengthUnit: km

Note: Value should be greater than 0.

Formulas to find Distance along Main Water Course

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 Basin Lag given Peak Discharge

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

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 Snyder's Equation?

Snyder's Equation evaluator uses Basin Lag = Regional Constant*(Length of Basin*Distance along Main Water Course)^0.3 to evaluate the Basin Lag, The Snyder's Equation formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall. Basin Lag is denoted by t_p symbol.

How to evaluate Snyder's Equation using this online evaluator? To use this online evaluator for Snyder's Equation, enter Regional Constant (C_r), Length of Basin (L_b) & Distance along Main Water Course (L_ca) and hit the calculate button.

FAQs on Snyder's Equation

What is the formula to find Snyder's Equation?

The formula of Snyder's Equation is expressed as Basin Lag = Regional Constant*(Length of Basin*Distance along Main Water Course)^0.3. Here is an example- 0.018834 = 1.46*(30*12000)^0.3.

How to calculate Snyder's Equation?

With Regional Constant (C_r), Length of Basin (L_b) & Distance along Main Water Course (L_ca) we can find Snyder's Equation using the formula - Basin Lag = Regional Constant*(Length of Basin*Distance along Main Water Course)^0.3.

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 Snyder's Equation be negative?

No, the Snyder's Equation, measured in Time cannot be negative.

Which unit is used to measure Snyder's Equation?

Snyder's Equation is usually measured using the Hour[h] for Time. Second[h], Millisecond[h], Microsecond[h] are the few other units in which Snyder's Equation can be measured.

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Snyder's Equation Formula

​GoBasin Lag given Modified Basin Lag Formula

​GoBasin Lag given Modified Basin Lag for Effective Duration Formula

Snyder's Equation Example

Snyder's Equation Solution

Snyder's Equation Formula Elements

Other Formulas to find Basin Lag

Other formulas in Synder's Synthetic Unit Hydrograph category

How to Evaluate Snyder's Equation?

FAQs on Snyder's Equation

Variable Name

GoBasin Lag given Modified Basin Lag Formula

GoBasin Lag given Modified Basin Lag for Effective Duration Formula