One of several different loss methods can be chosen when generating synthetic hydrographs. A loss method is assigned to a basin by first selecting the basin and then choosing the Loss Method button in the Edit HEC-1 Parameters dialog. As with other basin data the same parameters can be assigned to several basins by selecting multiple basins before accessing the Loss Method dialog.
When defining a kinematic wave model, it may be necessary to define a separate set of loss parameters for the two different UK records (generally corresponding to pervious and impervious area). This second set of loss parameters is defined from within the Unit Hydrograph Method dialog.
Related Topics:
Editing HEC-1 Parameters
SCS
Uniform
Green & Ampt
Holtan
Exponential