Calibration problem

Utsav Poudel

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Jul 4, 2025, 3:10:15 AMJul 4

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I did calibration on monthly basis but 95ppu comes out very large on both first and second iteration with each of 1000 simulations. What could be the cause of this error?

i set 1998 to 2010 with 3 yrs warmup and 2001 to 2007 as calibration.

omc...@gmail.com

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Jul 7, 2025, 3:12:09 PMJul 7

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Hi,

Is snow a really important process in your watershed, because the values of PLAPS and TLAPS are really high! Why ALPHA_BF is negative? Try to decrease the runoff by decreasing the CN2, and increasing ET and Infiltration

Regards,

Oscar M Cabezas Nivin

Utsav Poudel

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Jul 18, 2025, 12:16:34 PMJul 18

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How much should I set the values possibly?

Utsav Poudel

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Jul 21, 2025, 10:48:00 AMJul 21

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I ran 8 iterations with 1000 simulations each and I got this result. But on last 3 iterations nse, pbias and r2 didnt improved, struck on 0.7, only p and r factor improved. I did calibration on monthly basis from 2001 to 2007 containing 84 discharge data. How can i improve nse r2 to 0.8-0.85?

janak panthi

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Jul 22, 2025, 1:48:41 PMJul 22

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Please also review the dotty plots to assess whether the parameters show room for further improvement.

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Best Regards,

Janak Panthi

Engineer

Department of Water Resources and Irrigation

Jawalakhel, Lalitpur

Contact No.: +9779842458684

janak panthi

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Jul 22, 2025, 1:48:51 PMJul 22

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Please also review the dotty plots to assess whether the parameters show room for further improvement.

On Mon, Jul 21, 2025 at 8:33 PM Utsav Poudel <poudel...@gmail.com> wrote:

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