online_convolution:   Flood hydrograph by convolution 

Methods

Description

Reference

Ponce, V. M. 1989. Engineering Hydrology, Principles and Practices.
Prentice Hall, pages 185-187.

[Sample input]         [Sample output]

INPUT DATA:

Units:   

(SI units) [U.S. Customary units]

Rainfall time interval Δtr (hr):     

Number of increments of rainfall intensity n:     

Increments of rainfall intensity Ij (cm/hr) [in/hr] (separate each value with a comma; maximum string length is 300 characters).

[NRCS runoff] curve number CN:     

Unit hydrograph time interval Δt (hr):     

Number of unit hydrograph ordinates m:     

Unit hydrograph ordinates Qk (m3/s) [ft3/s] (start at 0, end at 0; separate each value with a comma; maximum string length is 300 characters).

ECHO OF INPUT:

Rainfall time interval Δtr =   hr               [Unit hydrograph duration tr =   hr]

Number of increments of rainfall intensity n =  

Increments of rainfall intensity ():

I1 =   .   

[NRCS runoff] curve number CN =                  

Unit hydrograph time interval Δt =   hr

Number of unit hydrograph ordinates m =  

Unit hydrograph ordinates ():

Q1 =  .   

OUTPUT:

Time
interval		Time
(hr)		Unit hydrograph
(m3/s)		Flood hydrograph
(m3/s)
0000

            

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Count 

online calc
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M1 wsprofile M2 wsprofile M3 wsprofile S1 wsprofile S2 wsprofile S3 wsprofile
C1 wsprofile H2 wsprofile A2 wsprofile C3 wsprofile H3 wsprofile A3 wsprofile
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ogee spillway Hazen-Williams parallel pipes three reservoirs tractive force
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Gumbel Gumbel 2 Log Pearson Log Pearson 2 TR-55 graphical curve number
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UH cascade dimensionless UH cascade general UH cascade series UH cascade all series UH cascade
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fall velocity Lane & Koelzer USLE USLE2 Dendy-Bolton Shields
Duboys Meyer-Peter Colby 1957 Colby reservoir design life Equilibrium channel top width using the Lane et al. theory
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DO sag DO sag analysis Oxygenation Salinity (EC to TDS)