Storage Unit Infiltration Behaviour - Initial Soil Moisture Deficit

If you have IMD of zero then the IMDMax is 0 and the Green Ampt solution may not be the most robust.  I need to add some graphics to see what is going on.

 Maybe this helps – you see that with a non zero IMD the initial infiltration is greater than with a zero value of IMD.  This makes the peak depth smaller and the peak volume much smaller.