1. Fig. 16.2 An unconfined aquifer with boundary condition

Consider the unconfined aquifer shown in Fig. 16.2.

Putting it in equation (16.25)

                                                      (16.26)

And,

                                                       (16.27)

From these two equations, we have

                                       (16.28)

                                                    (16.29)

Knowing hydraulic head at the well, the equation (16.29) can be used to calculate steady hydraulic head for any values of r. This equation can also be used for estimation of aquifer conductivity . The equation can be written for calculating aquifer conductivity as,

                                                     (16.30)