Contributed by E.D.Stewart, MA, PhD,

The flow of water in the watertable of homogeneous isotropic soil is governed by Darcy's law:

where *v* is the effective velocity of water flow, *K* is the constant hydraulic conductivity, *h* is the hydraulic head.

The hydraulic head at any given point is

where *z* is the gravitational head, i.e. the vertical height above the origin of coordinates, and *p* is the pressure head.

In this appendix only steady flows will be considered, i.e. flows where ...

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