When I tried out various values for the erosion parameter, I noticed that it did not differ whether I had it set on 2, 10 or 50 meter of lateral erosion per year.  I wondered how this was possible, because in theory I had expected a significant difference. Next step was decreasing the time step, so I could see better what happened. Result; for erosion rates that were large enough, each time step one cell transformed from tidal flat to estuarine water. After doing some more runs, I found out that the erosion length per time step is limited to cell size and the time step. If the cell size is for instance 5m, a maximum of 5m per time step is eroded. I know this is rather much and probably most erosion rates are (much) lower. However, when the box with ' Pause with Examination Tools' was unchecked in order to skip many clicks, not even one transformation from tidal flat to estuarine water was visible in the end map. The last cell in the offshore direction is Open Ocean, so maximum fetch is assumed if I'm right. Is this only happening to my simulation or is it a known problem?

I have another question about the condition of erosion to only happen at the land-water boundary. This boundary is defined as the boundary in the NWI category between open ocean/estuarine water - land type. In my simulation, I use a transect with a tidal flat next to the open ocean. During the tides, the water reaches up to the marshes, but there is no erosion. I assume that the boundary is fixed and doesn't account for the tidal range? I think it would be nice if cells with an elevation that lie within the MTL+/-1 HTU range also experience erosion.

Thanks in advance,
Tom