GGU-2D-TRANSIENT: "Blanket layer water level" menu item (for leaky aquifer only)

Certain elements can be assigned fixed water levels for the blanket layer by defining the area required as a polygon using 4 anti-clockwise points. You will then see a dialog box in which existing water levels can be deleted from the marked elements by pressing the "Delete" button. After clicking the "Define" button a dialog box opens for entering the water level to be used.