The electric models suggested by ohm, have the same geometric shape as the soil through which the water flows. And both Darcy and ohm’s law have corresponding analogous quantities.

For fine-grained soils, the well point system can be extended by the vacuum method.

Dewatering of fine grained cohesive soil can be done only electro-osmosis method.

The portion between any two successive flow lines is called a flow channel and the portion enclosed between two successive equipotential lines and successive flow lines are known as field.

A flow net can be utilized for determination of seepage, seepage pressure, hydrostatic pressure, and exit gradient.

Fully penetrating slot is used for both confined and unconfined case of flow.

Using the formula, hW = h -Z

In 1956, chapmen developed an expression for finding the discharge qP from a partially penetrating slot in an unconfined aquifer from his model studies.

The application of electro-osmosis to dewatering of soil was largely developed by L. Casagrande.

The flow lines and equipotential lines always meet at right angles to one another.