HYD_scs_s(): Potential storage according to SCS

About:

Calculate the Initial abstraction (Ia) according to Soil Conservation Soil (SCS).

\begin{equation} S = \frac{25400}{CN} -254 \end{equation}

 Where,

• $S$, potential storage, mm;
• $CN$, Curve Number.

Module: Hydrology

Function: HYD_scs_s(cn,amc)

Definition of variables:

• cn, curve number.
• amc, (1, 2 or 3)

Sample code:

from Hydrology import *

p = 100 #mm
cn2 = 70

amc = 1
s = HYD_scs_s(cn2,amc)
print("S (AMC I):",s,"mm")

amc = 2
s = HYD_scs_s(cn2,amc)
print("S (AMC II):",s,"mm")

amc = 3
s = HYD_scs_s(cn2,amc)
print("S (AMC III):",s,"mm")

Result:

S (AMC I): 250.371428571 mm
S (AMC II): 108.857142857 mm
S (AMC III): 46.8085714286 mm