Error in SWAT+ due to management schedule

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Matthew Lombardo

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Feb 9, 2026, 2:47:08 PM (6 days ago) Feb 9
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Hi all, 

I've attached a screenshot of the error message. I am using three management schudules to flood three different HRU's by specific depths, which I calculated based on the runoff of a certain part of the watershed. The three different HRUs are 662, 663, and 672. I think that the error is with the management schedule for HRU 672. Can someone help me fix my error?

Management schedule creation workflow:
1.) Created irrigation operations for each HRU with the depths I calculated. 
2.) Created a management schedule for each HRU using the irrigation operations for one day.
3.) Created unique land uses for each HRU, where I exactly copied the old land uses and filled in the management schedule field with each unique schedule.
4.) Assigned the land use managements to each HRU.

Thank you for you time and help,
Matt Lombardo
HRU Data.png
HRU662 Landuse.png
HRU672 Landuse.png
HRU663 Landuse.png
HRU663 Man Schedule.png
HRU672 Man Schedule.png
HRU662 Man Schedule.png
Irrigation Operations.png
SWAT+ Error.png

Matthew Lombardo

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Feb 12, 2026, 10:26:19 PM (2 days ago) Feb 12
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Hi all, 

I wanted to expand on my issue. I tested my model with just the management scheduels for HRUS 662 and 663 and it ran completely. The irrigation operation and management schudule should be identical to the other two besides the irrigation amount. What is causing this issue.

Thank you,
Matt Lombardo

Luqman Hakim

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Feb 12, 2026, 10:26:43 PM (2 days ago) Feb 12
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Hi Matt,

I hope you’re doing well.

I was wondering whether you were able to find a solution to this issue. I’m currently facing a very similar problem related to management schedules and irrigation operations in different HRUs.

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

Thank you in advance for your help.

Best regards,
Luqman

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