Modified Basin Lag given Time Base Calculator

Modified Basin Lag - (Measured in Hour) - Modified Basin Lag for an effective duration rainfall.
Time Base - (Measured in Hour) - Time Base is the time from which the direct runoff begins until the direct-runoff.

STEP 1: Convert Input(s) to Base Unit

Time Base: 90 Hour --> 90 Hour No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

t'_p = (t_b-72)/3 --> (90-72)/3

Evaluating ... ...

t'_p = 6

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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Credits

Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 2000+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

Chandana P Dev has verified this Calculator and 1700+ more calculators!

< 25 Synder's Synthetic- Unit Hydrograph Calculators

Distance along Main Water Course from Gauging Station to Watershed

Go Distance along Main Water Course = (Basin Lag/Basin Constant/(Length of Basin/sqrt(Basin Slope))^Basin Constant 'n')^1/Basin Constant 'n'

Basin Length Measured along Water Course given Modified Equation for Basin Lag

Go Basin Length = (Basin Lag/Basin Constant)^(1/Basin Constant 'n')*(sqrt(Basin Slope)/Distance along Main Water Course)

Modified Equation for Basin Lag

Go Basin Lag = Basin Constant*(Length of Basin*Distance along Main Water Course/sqrt(Basin Slope))^Basin Constant 'n'

Basin Slope given Basin Lag

Go Basin Slope = ((Basin Length*Distance along Main Water Course)/((Basin Lag/Basin Constant)^(1/Basin Constant 'n')))^2

Basin Lag given Modified Basin Lag for Effective Duration

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

Standard Duration of Effective Rainfall given Modified Basin Lag

Go Standard Duration of Effective Rainfall = Non-standard rainfall duration-4*(Modified Basin Lag-Basin Lag)

Modified Equation for Basin Lag for Effective Duration

Go Modified Basin Lag = Basin Lag+(Non-standard rainfall duration-Standard Duration of Effective Rainfall)/4

Equation for Catchment Parameter

Go Catchment Parameter = Length of Basin*Watershed Length/sqrt(Basin Slope)

Distance along Main Water Course from Gauging Station given Basin Lag

Go Distance along Main Water Course = ((Basin Lag/Regional Constant)^(1/0.3))*(1/Basin Length)

Regional Constant given Peak Discharge for Nonstandard Effective Rainfall

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

Basin Length Measured along Water Course given Basin Lag

Go Basin Length = (Basin Lag/Regional Constant)^1/0.3*(1/Distance along Main Water Course)

Peak Discharge for Nonstandard Effective Rainfall

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

Regional Constant representing Watershed Slope and Storage Effects

Go Regional Constant = Basin Lag/(Length of Basin*Distance along Main Water Course)^0.3

Snyder's Equation

Go Basin Lag = Regional Constant*(Length of Basin*Distance along Main Water Course)^0.3

Catchment Area given Peak Discharge for Nonstandard Effective Rainfall

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

Catchment Area given Peak Discharge of Unit Hydrograph

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

Modified Basin Lag given Peak Discharge for Nonstandard Effective Rainfall

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

Snyder's Equation for Peak Discharge

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

Basin Lag given Peak Discharge

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

Regional Constant given Peak Discharge

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

Basin Lag given Modified Basin Lag

Go Basin Lag = (Modified Basin Lag-(Non-standard rainfall duration/4))/(21/22)

Non-Standard Rainfall Duration given Modified Basin Lag

Go Non-standard rainfall duration = (Modified Basin Lag-(21/22)*Basin Lag)*4

Modified Basin Lag for Effective Duration

Go Modified Basin Lag = (21*Basin Lag/22)+(Non-standard rainfall duration/4)

Snyder's Equation for Standard Duration of Effective Rainfall

Go Standard Duration of Effective Rainfall = Basin Lag/5.5

Basin Lag given Standard Duration of Effective Rainfall

Go Basin Lag = 5.5*Standard Duration of Effective Rainfall

Modified Basin Lag given Time Base Formula

Modified Basin Lag = (Time Base-72)/3
t'_p = (t_b-72)/3

What is difference between Synthetic Unit Hydrograph & Unit Hydrograph?

A Synthetic Unit Hydrograph retains all the features of the unit hydrograph but does not require rainfall-runoff data. A synthetic unit hydrograph is derived from theory and experience, and its purpose is to simulate basin diffusion by estimating the basin lag based on a certain formula or procedure.
A Unit Hydrograph shows the temporal change in flow, or discharge, per unit of runoff. In other words, how the flow of a stream will be affected over time by the addition of one unit of runoff. The unit hydrograph is a useful tool in the process of predicting the impact of precipitation on streamflow.

What is Basin Lag?

Basin lag time, defined as the elapsed time between the occurrences of the centroids of the effective rainfall and the storm runoff hydrograph, is an important factor in determining the time to peak of the unit hydrograph and the intensity of peak discharge.

How to Calculate Modified Basin Lag given Time Base?

Modified Basin Lag given Time Base calculator uses Modified Basin Lag = (Time Base-72)/3 to calculate the Modified Basin Lag, The Modified Basin Lag given Time Base formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall. Modified Basin Lag is denoted by t'_p symbol.

How to calculate Modified Basin Lag given Time Base using this online calculator? To use this online calculator for Modified Basin Lag given Time Base, enter Time Base (t_b) and hit the calculate button. Here is how the Modified Basin Lag given Time Base calculation can be explained with given input values -> 0.001667 = (324000-72)/3.

FAQ

What is Modified Basin Lag given Time Base?

The Modified Basin Lag given Time Base formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall and is represented as t'_p = (t_b-72)/3 or Modified Basin Lag = (Time Base-72)/3. Time Base is the time from which the direct runoff begins until the direct-runoff.

How to calculate Modified Basin Lag given Time Base?

The Modified Basin Lag given Time Base formula is defined as the elapsed time between the occurrences of the centroids of the effective rainfall is calculated using Modified Basin Lag = (Time Base-72)/3. To calculate Modified Basin Lag given Time Base, you need Time Base (t_b). With our tool, you need to enter the respective value for Time Base 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 Time Base. 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 = Basin Lag+(Non-standard rainfall duration-Standard Duration of Effective Rainfall)/4

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