Depth

Enter the surface depth (m, ft) that corresponds to the flow in the adjacent column. The coordinates should start at zero although this is not mandatory, as the table will be extrapolated to predict any required value. The data also does not have to be entered in sequential increasing order since the data is sorted when OK or SORT is chosen.

Flow

Enter the flow (m3/s, ft3/s) corresponding to the Depth in the adjacent column.