(ii) The suction head distribution is (eq. 5.13) when is used. The flux can be obtained by solving

which gives, q = 15.84 cm/day

Therefore,

The head distribution by both the methods and the functional relationships for the conductivity are given in Fig. 5.6a-5.6b.

Fig. 5.6a. Suction head distribution in the horizontal column by different methods

Fig. 5.6b. Assumed hydraulic conductivity functional relationships

The head distribution is completely different by both the methods due to the wide variation in the assumed conductivity relationships. The conductivities vary in several orders by the assumed relationships. The discharge fluxes got adjusted to satisfy the boundary conditions. Therefore, a correct hydraulic conductivity functional relationship is required for estimating an accurate head distribution.