Issue with Inlet–Recall Configuration in SWAT+ Model

[Yashas Kumar H K]

Dear Connection, 

I am currently attempting to connect one of the headwater watersheds to the lower basin using a recall file through an inlet in SWAT+. I have followed all the procedures outlined in the SWAT+ documentation; however, the model does not appear to incorporate the daily inlet values provided through the recall file.

As a result, the simulated streamflow at a gauging station along the main channel shows unrealistically low values, as evident from the attached performance plots. This suggests that the inflow from the headwater watershed is not being correctly accounted for in the simulation.

I would be grateful if you could kindly help me identify and resolve this issue, as I am required to submit my progress report shortly. For your reference, I have attached the performance plots along with the corresponding TxtInOut files.

Thank you very much for your time and support.