Decision Table Not Working

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Matthew Lombardo

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Jan 30, 2026, 1:12:52 PMJan 30
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Hello,

Can someone help me figure out why my decision table is not working? My decision table is supposed to irrigate HRU01 on jday 252, or September 8th, with 50 mm. I added a screenshot of my decision table. To work, the decision table calls on the oepration "irri_research" under option to perform the 50mm irrigation. "Irri_research" is an irrigation operation that adds 50 mm of water, and there is a screenshot attached. I added my decision table to a managment schedule, under autoschedule, shown in the screenshot. I didn't use the "Add a decision table" under the schedule builder tab since it wouldn't let me use the date as a trigger. I know that the decision table is not working since when I check the irrigation amount in hru_wb_day after each model run, the irrigation column is only filled with 0's. Can someone help me figure out why the decision table isn't executing?

Thank you,
Matt Lombardo
Irrigation_Operation.png
Decision_Table.png
Management_Schedule.png

Luqman Hakim

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Feb 12, 2026, 10:26:51 PMFeb 12
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Hi Matt,

I faced a similar problem with you. If you have already resolved it, I would really appreciate it if you could share what caused the error and how you fixed it.

Best regards,
Luqman  

Matthew Lombardo

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Feb 16, 2026, 11:10:50 AMFeb 16
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Hi Luqman,

Unfortunately, I wasn't able to solve the issue. I pivoted to using an irrigation operation and a management schedule instead. I hope you figure out your problem!

Best,
Matt

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