Regards, pede someone explain why when water quality model files. Q2K I get an error "Invalid QUAL2K version 2.11 ... Must Be version 2.04" that it affects the model? I could not properly use this application, if alguine ever worked with. Q2K and has a clear guidance on handling this that can help me. thanks0.

Unfortunately, WEAP can only work with QUAL2K version 2.04, which is included when WEAP installs.

Thanks Jack, you can tell me where I can get the QUAL2K version 2.04, as in the website of the EPA only find the version 2.11b thanks.

When you install WEAP, it will automatically install QUAL2K version 2.04 in the WEAP program directory. The stand alone version is named q2kfortran2_04.exe; the spreadsheet version is named QUAL2K.xls

I would like to use QUAL2K to model constituents which are not included in version 2.04. Are there any plans of updating the QUAL2K version compatible with WEAP? The latest one is 2.12 which allows to include up to 3 additional constituents. It would be really interesting to have that capability for research purposes.

The next version of WEAP, which we plan to release this summer, will include the latest version of QUAL2K (2.12).