If any BMPs exist for this reach, the percentages in this table can be modified by editing the grid. The ‘Add’ button adds a BMP for the active reach, and the ‘Delete’ button removes a BMP for the active reach. When any change has been made, the ‘Update UCI’ button becomes available. Clicking this button makes the corresponding change in the UCI in memory. The change is not actually made in the UCI file on disk until the user chooses ‘save’ or ‘save as’ in the main WinHSPF window.
With a cell selected in a BMP column of the grid (if one has been added), the ‘Edit Removal Efficiency’ button may be clicked to edit the removal efficiencies for that BMP.