Filter strip source code error?

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Glenn O'Neil

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Feb 17, 2026, 5:07:57 PM (10 days ago) Feb 17
to SWAT+
Is this an error in the filter strip source code?

sed_remove1 = 79.0 - 1.04 * vfs_sed1 + 0.213 * surq_remove1
      if (sed_remove1 > 100.) sed_remove1 = 100.
      if (sed_remove1 < 0.) sed_remove1 = 0.
      sed_remove2 = 79.0 - 1.04 * vfs_sed2 + 0.213 * surq_remove1
      if (sed_remove2 > 100.) sed_remove2 = 100.
      if (sed_remove2 < 0.) sed_remove2 = 0.

Shouldn't the line that starts "sed_remove2 = ..." end with "... * surq_remove2"?

I'm getting very high sediment trapping in the filter strip (80-95%) regardless of the parameters I specify. 

Nancy B. Sammons

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Feb 18, 2026, 7:12:55 AM (9 days ago) Feb 18
to Glenn O'Neil, SWAT+

Glenn: I believe you are right.  Give me a bit to check with Dr. Arnold and I will get back to you soon. 

Nancy

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