Regarding solver convergence criteria are not met

[Lenka Saikumar]

Hello Everyone, 

Regarding my M.tech thesis work , i am Working on the SWAT-MODFLOW . so while running the MODFLOW model using Modelmuse software With MODFLOW-NWT. It gives error like solver convergence criteria are not met in *LST. how to resolve this, my model grid size is 300m*300m and 20 years simulation. each stress period is 1 year and 12 time steps for each stress period. Packages used RCH,RIVER,CHD,HOB,WELL

Anyone could please me in this

  

Thanks in Advance

[Richard Winston]

There are a number of strategies you could try to get your model to converge. First, you could try changing some of the solver options. You probably have already done that. Next, look at the listing file and see what cells are the most problematic when convergence fails. Look at your model near those cells to see if there is a mistake in how you set up your model there. Another possibility is to use more time steps per stress period.

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[Richard Winston]

See also question K in this link.

https://water.usgs.gov/nrp/gwsoftware/ModelMuse/Help/frequently_asked_questions.html