I have used HEC-HMS in the past and just downloaded the latest version.
I got my entire model in. The problem is the control specifications will not save. I have entered start dates and times. There is no "apply" or "ok" to hit after entering this data.
If I click on something else in the...
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...
I am running a model with a year of rain data. It rained 55.74 inches in that year.
My subcatchment is 0.468 acres of 100% impervious area. For whatever reason, the rain turns out to be 55.621 inches which i am assuming comes from the change that SWMM does from volume input to intensity which...
