The relationship between the rainfall, total losses from the previous area, evaporation and infiltration only rate in SWMM 5

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

Comments

Popular posts from this blog

Soffit Level

SWMM 5 Error Messages

How InfoSWMM and InfoSWMM SA 2D Link and 3D Node Graphics Help You Understand the Response of Your Network to Wet Weather Flow