International Union of Soil Science Working Group on Hydropedology. A multidisciplinary and multiscale approach of soil and water transfer.

An on-line course on soils and water: Irrigation, nutrient and pesticide transport, soil/water measurement methods, etc. University of Florida.

A collection of models for water flow and solute transport in soils, for scientists, decision makers and students (with theory presentation and exercises)

These tutorials range in difficulty from college sophomore to the senior/graduate/postdoctoral level. They begin with the basics and extend to a new exact solution to Richards' equation for unsaturated horizontal and vertical flow.