1. (e.g., the Toth Problem) z x z x h = c x + z o Profile Models

2. In a profile model, the water table forms the upper boundary of the model. In transient problems the water table fluctuates and the position of the water table is unknown. The profile should be oriented parallel to flow.

3. Profile – unconfined aquifer 2D confined aquifer for homogeneous, anisotropic aquifers  We can simulate a profile by using 1 confined layer in MODFLOW.

4. Specified head cells Active cells MODFLOW does not compute fluxes between specified head cells; you need to compute those manually. MODFLOW computes fluxes between specified head cells and active cells.

5. Problem Set 6 illustrates: 1.Use of 1 confined MODFLOW layer to simulate an unconfined aquifer in profile view. 2.Procedure for switching from specified head to specified flux boundary conditions.