## Tips & Tricks

### Codes and more that we use often

January 27, 2020 by

### Soil Hydraulic Functions in R

#### Water Retention Functions

The van Genuchten (1980) model is the most widely used water retention curve function:

where the effective saturation is defined as: $\Theta = (\theta - \theta_{r}) / (\theta_{s} - \theta_{r})$

Fit parameters of van Gnuchten Model