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Permalink Reply by Robert E Dickinson on April 21, 2008 at 8:17pm

See how I loaded your two files:

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Permalink Reply by wes on April 22, 2008 at 10:57am

My converter was from the EPA website and looked slightly different than yours. After downloading from the link on the previous page it worked fine???? Thanks

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Permalink Reply by Robert E Dickinson on April 22, 2008 at 10:59am

The EPA website converter is a few years out of date.

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Permalink Reply by Robert E Dickinson on March 12, 2008 at 7:46pm

XP to EPA conversion notes:


1. Start with a XP-SWMM .xp database.
2. Solve XP-SWMM to make a .dat file.
3. Use the XPtoEPA4 converter to translate the .dat file to an EPA SWMM
4.4 Data File.
4. Use the SWMM 4 to SWMM 5 VB converter to translate the SWMM 4.4 .dat
file to a SWMM 5 .inp file.

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Permalink Reply by Robert E Dickinson on March 12, 2008 at 7:48pm

It does not convert .xp files so you have to have already exported the .xp file to a .dat file.
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The DOS converter XPtoEPA4_jan_2004 will convert all versions of the XP-SWMM or Visual SWMM exported .dat file to the standard format EPA SWMM 44h formatted data file. You need to run the converter in a DOS window with one command line argument. For example, in the figure shown below the converter was run with this argument:

XPtoEPA4_jan_2004 25yr-72hr-20-lakes-update.dat

The converter will convert all that it can and then make assumptions such as converting non-standard XP-SWMM shapes to circular conduits in SWMM 44h. The converted file will have the extension .epa, which in this case was the file 25yr-72hr-20-lakes-update.epa. One note of importance; the XP-SWMM .dat file does not have the x,y coordinates of the nodes. You need to extract this information from the .out file of XP-SWMM. Once you have the SWMM 44h data file then you can use the SWMM 4 to SWMM5 data converter to convert to the SWMM 5 input data set.

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Permalink Reply by wes on April 21, 2008 at 6:14pm

Robert,

I have successfully converted *.dat files to *.epa, but don't understand how to get from *.epa file to the *.dat file necessary for conversion to SWMM 5. I need an extran and a transport file for conversion to SWMM 5. Is the *.epa file related to either of these?

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Permalink Reply by Robert E Dickinson on April 21, 2008 at 6:26pm

The .epa extension is just a shortcut that I used for the converted file. It is the same as a SWMM 4 .dat or .inp file. The next step is to convert the .epa files to a SWMM 5 file.

You should create the .epa files first from the Runoff, Transport and Extran files and then use the SWMM4to5Converter.EXE to combine the Runoff and Extran files in one SWMM 5 input file.

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Permalink Reply by wes on April 21, 2008 at 6:40pm

I'm sorry, feeling dumb here. I've never worked w/ xp or ver 4. I've received files from an associate to compare their old model results with mine using ver. 5. I don't honestly know if the files I received are from xp or 4. For each file name I have *.dat, *.out and *.int file extensions. Also, the file names are repeated with extran added and the same series of file extensions for those names, i.e. 100y24hr.dat, 100y24hr.out, and 100yr24h.int and then 100y24h Extran.dat, 100y24h Extran.int...

"You should create the .epa files first from the Runoff, Transport and Extran files" - If I only used one *.dat file to create the *.epa file is that file incomplete?

How does one convert the *.epa file for use with the 4to5 converter?

Is the *.epa file the runoff or extran file?

Thanks for any replies, Wes

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Permalink Reply by Robert E Dickinson on April 21, 2008 at 6:44pm

Hi,
Send me the top of your Runoff.dat file and I can tell you whether it came from XP or is a SWMM 4 file.

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Permalink Reply by wes on April 21, 2008 at 6:46pm

Here are the files which do not carry the extran suffix.

Attachments:

• 100yr Pre 24hr Huff.out, 21 KB
• 100yr Pre 24hr Huff.dat, 2 KB
• 100yr Pre 24hr Huff.int, 54 KB

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Permalink Reply by Robert E Dickinson on April 21, 2008 at 6:49pm

You have a PC-SWMM file; you need to add the SW and MM lines at the top of the data file to make it convert:

SW 1 0 0
MM 3 10 11 12
$RUNOFF

Once you do this you should be able to use the REGULAR SWMM4to5converter.exe to make a SWMM 5 file,

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Permalink Reply by wes on April 21, 2008 at 6:55pm

If this *.dat file is the runoff file, is this the extran file?

Thanks for your time, this is really helpful.

Attachments:

• 100yr Pre 24-hr Huff Extran.dat, 2 KB

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