SWMM fundamental question
SWMM fundamental question
(OP)
When modeling a drainage area in SWMM that is completely impervious using curve numbers. A CN of 98 is put in but also the percent impervious is set to 100%. In this case, is any rainfall lost as initial abstractions or does the 100% impervious imply that all rain contacting it will become runoff (equivalent of CN=100)?





RE: SWMM fundamental question
RE: SWMM fundamental question
RE: SWMM fundamental question
Try it.
RE: SWMM fundamental question
.
SWMM5 methodologies are generally implemented in the same conceptual manner as in SWMM4.
I suggest you download and review the EPA SWMM4 Manual.
This can be downloaded from "http://eng.odu.edu/cee/resources/model/swmm.shtml".
I also suggest looking through the SWMM5 Manual and help file.
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