Flownet is important concept as describe as follows EXCEPT How the head of energy increase as water flows through a porous medium Define the quantity of seepage under dams and sheet piling Using network of flow lines and equipotential lines In isotropic soil, the coefficient of permeability can be taken as one value. There is a capillary action that takes place above the groundwater table up to 2.3 m in height. Assume the unit weight of water is 10 kPa. Calculate the pore water pressure at the surface of the groundwater table.