4-23 Draw the flow net for the shown homogeneous isotropic earth dam after steady flow is established. The dam cross section is drawn to scale and the coefficient of permeability for the dam material is 4.5 x 10 cm/sec. Estimate the seepage rate per meter length of the dam. 16 m V 2 Impervious 8 m + 18 m 30 m Blanket drain