In PLAXIS 2D Classic, PLAXIS 2D2012 and earlier, there is an option to define the water weight in each staged construction phase via the menu item Geometry > Water. However, this will only have the desired effect when
This issue is now resolved in PLAXIS 2DAE: the water weight is now a project property.
For PLAXIS 2D Classic, PLAXIS 2D2012 and earlier: When not using Updated Mesh, the water weight should only be adjusted in the initial phase and should not be changed in any other phase.