Hello everybody, I am new in this forum and in first place I want to thank all people that make this possible.
About my question, I am working with EPA SWMM and I need to use a hotstart file for fist time. I know that I can generate a hotstart file (t
Read more…Hi! I have some questions about the Green-Ampt equation.
What does exactly the head (or suction head) mean in this equation? I get confused here and can't find a good explanation. I found one equation of head online, but not clear why it is expressed
Read more…Hi I am currently using SWMM. I have design a model on the program , I want to know how I can get the total flow rate from all sub catchment going into the sump , I want the final total flow rate. there are two areas one area includes 12 sub catchme
Read more…Hello,
I have just started using SWMM5 and I am having troubles trying to run a steady-state simulation. If I understood correctly, the 'steady-state' option only has to do with the conduit routing method. The simulator still needs a user-defined peri
Read more…Hi! I have a question about evaporation. I ran the model for only one day to see the relationship among evaporation, precipitation and runoff volume, but I found the precipitation is much higher than precipitation. Why the evaporation is much higher
Read more…What should be the optimum range for External and Internal outflow for SWMM 5.0 result ?
Is there any book available for understanding EPA SWMM 5.0 applications and basic concepts/mechanism apart from the User and Application manual ?
Read more…Hello all,
Is there an idiots guide for getting started with SWMM5 in Matlab?
I've been handed a folder with all of the code for a larger model which contains SWMM5 but can't get it to run overall because I can't get the SWMM5 model library (?) to loa
Read more…Hi! What is the suction head at the wetting front for Green Ampt equation? I couldn't find the detailed information about it online. In addition, normally what's value of it? How can I determine it?
Read more…Hi I'm new to SWMM and a linux user. I was wondering if there might be binaries available online? Or in general how a linux user goes about using SWMM without building from source
Read more…Hi! I have a question about simulation of LID. How does SWMM 5 simulate the runoff reduction from LID? Are there any principles or equations?
In addition, when soil becomes saturated after long-term precipitation or certain time of precipitation, LID
Read more…I'm attempting to use the add-in tools capability within SWMM5 to extract data from the binary output file using the $OUTFILE macro. However, the temporary SWMM output file passed to the external program is still in use by EPASWMM5.exe and is therefo
Read more…Dear all,
I would like to ask whether there is an open source tool for SWMM allowing for automatic design of pipe diameters in SWMM similar to that provided by DHI within Mike Urban.
Thank you very much.
Christoph
Read more…Hi
I do have one question. Why each time i create a file in SI units and set rain to mm, leave the program, and then open the SWMM (5.0.022) file, and the rain units are in inches (instead of mm), altought the flow units are in LPS?
Thanks in advance.
V
Hi! I got the hourly runoff results from model and the unit is CMS. Now I want to calculate the pollutant load in the runoff. Normally the unit of the load is kg/ha/yr, but I only have hourly runoff data and unit is cubic meters per second. I don't k
Read more…Hi! I used statistics tool in SWMM5 and got the results as following, but I'm not clear what "exceedance frequency" means here? In addition, why is start data not in order? I mean 211, 2012 and 2013. It appears randomly.
Hi! I have a question about runoff. Since this model can't model pollutant reduction benefits from LID, I want to calculate it using EMC by myself. I'll use equation L=EMC*Q, where EMC is mg/m3, Q is m3/day. But the runoff modeled from SWMM is m3/s a
Read more…In the newer versions of EPA SWMM after (5.0.1.11), there is a new feature of allowing for Add-ins and third-party tools. One such Add-in, the Microsoft Excel, can be very helpful for input data editing and model calibration.
1. To activate the Add
Hi! I have another question about infiltration model. I want to use three different methods to see what's the difference among them. I successfully run the model when I chose Green-Ampt and Curve Number, but when I selected Horton model, the error ap
Read more…Hi, I made a diagram of precipitation, loss and evaporation based on the data modeled from SWMM, but why evaporation value is much higher than precipitation and loss? I think the loss here is infiltration and evaporation loss, but why only evaporatio
Read more…hi..everyone....how can i model a vacuum sewer system using SWMM...
please i will need a detail explanation cos i am just learning to use the software
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