onlinerouting06:   Time-area method of watershed routing 

Formulas

Q = Ij * Ak             Convolution (See text example).
Reference

Ponce, V. M. 1989. Engineering Hydrology, Principles and Practices. Prentice Hall, pages 307-311.
Example
INPUT DATA:

Enter time interval Δt (hr):     

Enter number of increments of [effective] rainfall intensity:     

Enter increments of [effective] rainfall intensity Ij (cm/hr) (separate each value with a comma; maximum string length is 200 characters).

Ij:     

Enter number of increments of [watershed] drainage area:     

Enter increments of [watershed] drainage area Ak (km2) (separate each value with a comma; maximum string length is 200 characters).

Ak:     

ECHO OF INPUT:

Time interval Δt =   hr               

Number of increments of [effective] rainfall intensity =  

Ij  (0) =  .   

Number of increments of [watershed] drainage area =  

Ak  (0) =  .   

OUTPUT:

Time
interval		Time
(hr)		Outflow
(km2-cm/hr)		Outflow
(m3/s)
00  

            

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