No erosion on subdaily SWAT + ?

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Adrien Delaval

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Jul 7, 2026, 12:21:49 PMJul 7
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Hello everyone,Despite a successfull run /decent water balance/ consequent generation of surface runoff : there is no production of erosion for any HRU at any timestep on my swat + project on a subdaily timestep (hourly)

There is probably something I miss but i already tried a few things in 4.

4. Description of Issue
  • The Problem and steps to reproduce
*I checked every component of the musle equation that i could except the peak_rate (erosion.out is empty).*Some hrus have a slope of 0 but not all.*Tried with and without Green-Ampt equation.
*Works with another project on daily scale on the same swat version.



1. Primary Issue Location
  • Component: (SWAT+ Editor, SWAT+ Executable, or Model Functionality)
  • Area of impact: (model output)
2. Software Versions
  • SWAT+ Editor 3.14: * SWAT+ Revision 61.0.2
3. Project Characteristics
  • Watershed Details: 5000 hru, 200 km² watershed, hourly pcp, a lot of different LAND-USE (urban, forest, corn)
  • Modeling Aim: (daily discharge and erosion)

    Thanks in advance for any input
    Best,
    Adrien

60.pcp

Adrien Delaval

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Jul 17, 2026, 11:52:09 AM (6 days ago) Jul 17
to SWAT+
Update : 
Editor 3.1.4 doesn't change "gampt" to 1. If gampt1 is forced manually, it works. hope it can help
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