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The Dry Step is used if there is a wet cell that is isolated or perched and which has a very small depth. In this case, after a certain number of time steps set the by this Dry Step value, EFDC will waste the water. EFDC continues to keep track of this cell and the volume of water removed from the system to calculate mass balance. In EFDCPlus, if the Dry Step is a positive value then it doesn't have much impact on the model. Set the value to negative to activate dry cell wasting. If the negative Dry Step is a small number then EFDC provide more reporting of cells going dry in the run screen. If a set a to larger negative number (eg -1600), then it will to report less often.
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