Fig. 8. Upward flux, |qz|, as a function of depth in the AB medium at y = –0.25 m (Soil A) and y = 0.25 m (Soil B) from numerical approximation of Eq. [18] (two-dimensional case) and Eq. [19] (one-dimensional case): (a) surface pressure head he = –3 m and water table depth L = 2 m, (b) he = –10 m and L = 2 m, and (c) he = –10 m and L = 5 m.