Peak Discharge of D-h Unit Hydrograph Solution

STEP 0: Pre-Calculation Summary
Formula Used
Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4)
Qpd = 1.79*A^(3/4)
This formula uses 2 Variables
Variables Used
Peak discharge of a D-h Unit hydrograph - (Measured in Cubic Meter per Second) - Peak discharge of a D-h Unit hydrograph is the maximum volume flow rate displays in a unit hydrograph.
Area of Catchment - (Measured in Square Meter) - Area of catchment is the area from which rain flows into a particular river or lake.
STEP 1: Convert Input(s) to Base Unit
Area of Catchment: 3 Square Kilometer --> 3000000 Square Meter (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Qpd = 1.79*A^(3/4) --> 1.79*3000000^(3/4)
Evaluating ... ...
Qpd = 129030.972939036
STEP 3: Convert Result to Output's Unit
129030.972939036 Cubic Meter per Second --> No Conversion Required
FINAL ANSWER
129030.972939036 129031 Cubic Meter per Second <-- Peak discharge of a D-h Unit hydrograph
(Calculation completed in 00.004 seconds)

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Peak Discharge of D-h Unit Hydrograph given Lag Time
Go Peak discharge of a D-h Unit hydrograph = (Area of Catchment)*(1.56/Lag Time of a 1-h Unit Hydrograph)^(1/0.9)
Catchment Area given Lag Time of 1-h Unit Hydrograph
Go Area of Catchment = Peak discharge of a D-h Unit hydrograph*(Lag Time of a 1-h Unit Hydrograph/1.56)^(1/0.9)
Lag Time of 1-h Unit Hydrograph
Go Lag Time of a 1-h Unit Hydrograph = 1.56/((Peak discharge of a D-h Unit hydrograph/Area of Catchment)^0.9)
Catchment Area for Peak Discharge of Weighted Mean Slope Lesser than 0.0028
Go Area of Catchment = (Peak discharge of a D-h Unit hydrograph/(37.4*Weighted Mean Slope^(2/3)))^(4/3)
Weighted Mean Slope given Peak Discharge of D-h Unit Hydrograph
Go Weighted Mean Slope = (Peak discharge of a D-h Unit hydrograph/(37.4*Area of Catchment^(3/4)))^(3/2)
Peak Discharge of D-h Unit Hydrograph for Weighted Mean Slope Lesser than 0.0028
Go Peak discharge of a D-h Unit hydrograph = 37.4*Area of Catchment^(3/4)*Weighted Mean Slope^(2/3)
Lag Time of 1-h Unit Hydrograph given Duration of Rainfall Excess
Go Lag Time of a 1-h Unit Hydrograph = Duration of Excess Rainfall in Hours/1.1
Duration of Rainfall Excess
Go Duration of Excess Rainfall in Hours = 1.1*Lag Time of a 1-h Unit Hydrograph
Catchment Area given Peak Discharge of D-h Unit Hydrograph
Go Area of Catchment = (Peak discharge of a D-h Unit hydrograph/1.79)^(4/3)
Peak Discharge of D-h Unit Hydrograph
Go Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4)

Peak Discharge of D-h Unit Hydrograph Formula

Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4)
Qpd = 1.79*A^(3/4)

What is Catchment Area?

Catchment Area is an area of land where all of the precipitation that falls, less the water lost to evaporation and deep aquifer recharge, eventually flows to a single outlet.

How to Calculate Peak Discharge of D-h Unit Hydrograph?

Peak Discharge of D-h Unit Hydrograph calculator uses Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4) to calculate the Peak discharge of a D-h Unit hydrograph, The Peak Discharge of D-h Unit Hydrograph formula is defined as the maximum volume flow rate passing a particular location during a storm event. Peak discharge of a D-h Unit hydrograph is denoted by Qpd symbol.

How to calculate Peak Discharge of D-h Unit Hydrograph using this online calculator? To use this online calculator for Peak Discharge of D-h Unit Hydrograph, enter Area of Catchment (A) and hit the calculate button. Here is how the Peak Discharge of D-h Unit Hydrograph calculation can be explained with given input values -> 129031 = 1.79*3000000^(3/4).

FAQ

What is Peak Discharge of D-h Unit Hydrograph?
The Peak Discharge of D-h Unit Hydrograph formula is defined as the maximum volume flow rate passing a particular location during a storm event and is represented as Qpd = 1.79*A^(3/4) or Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4). Area of catchment is the area from which rain flows into a particular river or lake.
How to calculate Peak Discharge of D-h Unit Hydrograph?
The Peak Discharge of D-h Unit Hydrograph formula is defined as the maximum volume flow rate passing a particular location during a storm event is calculated using Peak discharge of a D-h Unit hydrograph = 1.79*Area of Catchment^(3/4). To calculate Peak Discharge of D-h Unit Hydrograph, you need Area of Catchment (A). With our tool, you need to enter the respective value for Area of Catchment 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 Peak discharge of a D-h Unit hydrograph?
In this formula, Peak discharge of a D-h Unit hydrograph uses Area of Catchment. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Peak discharge of a D-h Unit hydrograph = 37.4*Area of Catchment^(3/4)*Weighted Mean Slope^(2/3)
  • Peak discharge of a D-h Unit hydrograph = (Area of Catchment)*(1.56/Lag Time of a 1-h Unit Hydrograph)^(1/0.9)
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