online_uh_cascade:   Unit hydrograph by the cascade of linear reservoirs 

Formulas

C = tr/K          C1 = C/(2+C)           C2 = (2-C)/(2+C)

Qj+1n+1 = 2C1(Qaverage)j + C2Qj+1n

Reference

Ponce, V. M. 1989. Engineering Hydrology, Principles and Practices.
Prentice Hall, pages 313-317.

Rationale
                 

Example
INPUT DATA:

Basin area A (km2):     

Unit hydrograph duration tr (hr):     

Storage constant K (hr):     

Number of reservoirs N:     

[ Note:  For proper linear reservoir specification, always use C = tr / K ≤ 2.]

ECHO OF INPUT:


Warning: Undefined variable $basinarea in /var/www/html/ponce/onlineuhcascade.php on line 342
Basin area A =   km2    •    
Warning: Undefined variable $deltat in /var/www/html/ponce/onlineuhcascade.php on line 343
Unit hydrograph duration tr =   hr    •    
Warning: Undefined variable $kstorage in /var/www/html/ponce/onlineuhcascade.php on line 345
Storage constant K =   hr    •    
Warning: Undefined variable $numberres in /var/www/html/ponce/onlineuhcascade.php on line 346
Number of reservoirs N =  

OUTPUT:

Time
interval		Time
(hr)		Outflow
(m3/s)
000

            

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Thank you for running online_uh_cascade.   [090516]

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