Regional Constant given Peak Discharge Calculator

✖Peak Discharge is the maximum volume flow rate passing a particular location during an event.ⓘ Peak Discharge [Q_p]			+10% -10%
✖Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.ⓘ Basin Lag [t_p]			+10% -10%
✖Catchment Area is an area of land where all water flows to a single stream, river, lake or even ocean.ⓘ Catchment Area [A_catchment]			+10% -10%

✖Regional Constant representing watershed slope and storage effect.ⓘ Regional Constant given Peak Discharge [C_r]

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Regional Constant given Peak Discharge Solution

STEP 0: Pre-Calculation Summary

Formula Used

Regional Constant = Peak Discharge*Basin Lag/2.78*Catchment Area
C_r = Q_p*t_p/2.78*A_catchment
This formula uses 4 Variables

Variables Used

Regional Constant - Regional Constant representing watershed slope and storage effect.
Peak Discharge - (Measured in Cubic Meter per Second) - Peak Discharge is the maximum volume flow rate passing a particular location during an event.
Basin Lag - (Measured in Hour) - Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall.
Catchment Area - (Measured in Square Meter) - Catchment Area is an area of land where all water flows to a single stream, river, lake or even ocean.

STEP 1: Convert Input(s) to Base Unit

Peak Discharge: 0.891 Cubic Meter per Second --> 0.891 Cubic Meter per Second No Conversion Required
Basin Lag: 6 Hour --> 6 Hour No Conversion Required
Catchment Area: 2 Square Meter --> 2 Square Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

C_r = Q_p*t_p/2.78*A_catchment --> 0.891*6/2.78*2

Evaluating ... ...

C_r = 3.84604316546763

STEP 3: Convert Result to Output's Unit

3.84604316546763 --> No Conversion Required

FINAL ANSWER

3.84604316546763 ≈ 3.846043 <-- Regional Constant

(Calculation completed in 00.004 seconds)

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Regional Constant given Peak Discharge for Nonstandard Effective Rainfall

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

Peak Discharge for Nonstandard Effective Rainfall

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

Catchment Area given Peak Discharge for Nonstandard Effective Rainfall

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

Modified Basin Lag given Peak Discharge for Nonstandard Effective Rainfall

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

Regional Constant given Peak Discharge Formula

LaTeX Go

Regional Constant = Peak Discharge*Basin Lag/2.78*Catchment Area
C_r = Q_p*t_p/2.78*A_catchment

What is the Catchment Area of a river?

A water catchment (commonly referred to as a “watershed”) is an area of land where all water flows to a single stream, river, lake or even ocean. Natural boundaries of water catchments can be very small for a single creek or stream or quite large—the Colorado River basin for example.

What is Lag time in hydrology and Baseflow?

The Lag time is the delay between the maximum rainfall amount and the peak discharge. The shape of a hydrograph varies in each river basin and each storm event. This increases lag time. The peak discharge is also lower as it takes water longer to reach the river channel.
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 Regional Constant given Peak Discharge?

Regional Constant given Peak Discharge calculator uses Regional Constant = Peak Discharge*Basin Lag/2.78*Catchment Area to calculate the Regional Constant, The Regional Constant given Peak Discharge formula is defined as the constant for basin lag depending on the region under study. Regional Constant is denoted by C_r symbol.

How to calculate Regional Constant given Peak Discharge using this online calculator? To use this online calculator for Regional Constant given Peak Discharge, enter Peak Discharge (Q_p), Basin Lag (t_p) & Catchment Area (A_catchment) and hit the calculate button. Here is how the Regional Constant given Peak Discharge calculation can be explained with given input values -> 3.846043 = 0.891*21600/2.78*2.

FAQ

What is Regional Constant given Peak Discharge?

The Regional Constant given Peak Discharge formula is defined as the constant for basin lag depending on the region under study and is represented as C_r = Q_p*t_p/2.78*A_catchment or Regional Constant = Peak Discharge*Basin Lag/2.78*Catchment Area. Peak Discharge is the maximum volume flow rate passing a particular location during an event, Basin Lag is the elapsed time between the occurrences of the centroids of the effective rainfall & Catchment Area is an area of land where all water flows to a single stream, river, lake or even ocean.

How to calculate Regional Constant given Peak Discharge?

The Regional Constant given Peak Discharge formula is defined as the constant for basin lag depending on the region under study is calculated using Regional Constant = Peak Discharge*Basin Lag/2.78*Catchment Area. To calculate Regional Constant given Peak Discharge, you need Peak Discharge (Q_p), Basin Lag (t_p) & Catchment Area (A_catchment). With our tool, you need to enter the respective value for Peak Discharge, Basin Lag & Catchment Area 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 Regional Constant?

In this formula, Regional Constant uses Peak Discharge, Basin Lag & Catchment Area. We can use 1 other way(s) to calculate the same, which is/are as follows -

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

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