About:

Calculate the concentration time of a river according to Kirpich equation.
\begin{equation} T_c = 0.00032 \times \frac{L^{0.77}}{S^{0.385}} \end{equation}

where,

$T_c$, concentration time - h;

$L$, Channel lenght - m;

$S$, Channel slope - m/m.

Module: Hydrology

Function: HYD_kirpich_tc(l,s)

Parameters:

Sample code

from Hydrology import*

l = 100000 #m
s = .005 #m/m

tc = HYD_kirpich_tc(l,s)

print("Tc:",tc,"hours")

Results:

Tc: 17.419934858958747 hours

Module: `Hydrology`

Function: `HYD_kirpich_tc(l,s)`

Parameters:

`l`, river lenght - m;

`s`, river slope - m/m;

Sample code

`from Hydrology import* l = 100000 #m s = .005 #m/m tc = HYD_kirpich_tc(l,s) print("Tc:",tc,"hours")`

Results:

`Tc: 17.419934858958747 hours`