SWMM56

Note:   There are Three Types of Surfaces in each  Subcatchment  of  SWMM   5 .  The overall  depth  in a  subcatchment  is the weighted average of the impervious without depression storage area, the impervious with depression storage area and the pervious area  depth .  The depths on each type of area are independent of each other.   Figure 1:   The processes that occur on each type of  Subcatchment  Area. Figure 2:   The three independent Depths on a  Subcatchment .  The  SWMM   5   reported   Depth  is the weighted average of the three depths.