Showing posts with label The relationship between the rainfall. Show all posts
Showing posts with label The relationship between the rainfall. Show all posts

Friday, July 26, 2013

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

Subject:  The relationship between the rainfalltotal losses from the previous areaevaporation 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 rateSWMM 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 rainfalltotal losses from the previous areaevaporation and infiltration only rate
Figure 2:  The same model with the Evaporation during only Dry Periods turned on

Saturday, November 27, 2010

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

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