SWMM56

Subject:   The  relationship   between  the  rainfall ,  total   losses  from the  previous   area ,  evaporation  and  infiltration   only   rate . The  total  loss from a subcatchment pervious  area  is the sum of the  evaporation  +  infiltration  loss.  Typically the  evaporation   rate  is much less than the  infiltration   rate .  SWMM   5  now has too options –  evaporation  during  only  dry periods or  evaporation  during both wet and dry periods. Figure 1:   An example network that shows the  relationship   between  the  rainfall ,  total   losses  from the  previous   area ,  evaporation  and  infiltration   only   rate .  Figure 2:   The same model with the  Evaporation  during  only  ...

Subject: The relationship between the rainfall, total losses from the previous area, evaporation and infiltration only rate. The total loss from a subcatchment pervious area is the sum of the evaporation + infiltration loss. Typically the evaporation rate is much less than the infiltration rate. SWMM 5 now has two options – evaporation during only dry periods or evaporation during both wet and dry periods. Figure 1: An example network that shows the relationship between the rainfall, total losses from the previous area, evaporation and infiltration only rate. Figure 2: The same model with the Evaporation during only Dry Periods turned on