Haverkamp Model

For h < 0:

se = 1 / (1 + (h/alpha)beta)

Kr = 1 / (1 + (h/A')B')

For h >= 0:

se = 1

Kr = 1

where

se = effective saturation = (VMC - RMC)/(porosity - RMC)

Kr = relative hydraulic conductivity

h = pressure head

alpha = pressure head at which se = 0.5

beta = slope of the log-log plot of (1/se - 1) versus h

A' = pressure head at which Kr = 0.5

B' = slope of the log-log plot of (1/Kr - 1) versus h

Return to: Contents