I am struggling to setup a swat model for a small agricultural watershed of 40 km². I would like to run a simulation at a timestep of 5 mn. Some references I came accross suggest this is quite possible. I am using arcSWAT (https://swat.tamu.edu/software/arcswat) v2012 10.3.19 (for arcGIS 10.3).
I have recorded values of precipitations (at 4 raingages) as well as discharges at a timestep of 5 mn. Feeding precipitation files to the weather Data section returned the error "Index was outside the bounds of the array".
I googled a bit and it came out for subdaily timesteps, the header of *pcp files should be formatted as "20170101,5" followed with the values as usual, considering the start date is 2017/01/01. Changing my files returned a different error : "the number of rows in your file does not correspond correctly to the timestep of the file" (as reported here https://groups.google.com/forum/#!msg/swatuser/6WY8LX95olY/QCEfsbwhAgAJ).
Are there any pieces of advise on how to setup correctly input files for subdaily simulation with arcSWAT ?
Example file is attached in the SWAT folder in you C drive. check this file
\Databases\ExInputs\SubDailyPcp_1day_60min.txt
check if your missing value replaced correctly by "-99"
Example file is attached in the SWAT folder in you C drive. check this file
\Databases\ExInputs\SubDailyPcp_1day_60min.txt
check if your missing value replaced correctly by "-99"
Manashi, much thanks, it was really good recommendation.
Actual, the problem was related to the number of entries in the pcp file. SWAT needs the data series to start at 00:00 and to end at 00:00 (i.e, a whole number of days). I had 122 days of simulations, hence for a fixed timestep of 5 mn, I needed (122 (days) * 1440 minutes/day ) / (timestep = 5 mn) = 35 136 lines of data.
Thanks again.
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