MODFLOW Users Group

Sergio, It is possible to re-start a PEST run if it was interrupted, but it depends on a number of

In Visual MODFLOW Flex, go to Numerical Model → Property Zone → IBOUND (Active/Inactive). Select the

Hi, I was hoping I could get some advice about improving the stability of my SWR channel model. The

It's hard to tell exactly what went wrong, but the problem relates to the file with a unit number

Happy to share that the report "Methodology for hydrological and hydrogeological modelling of

Hey, I am trying to build a model where one side of a coastal unconfined aquifer has a constant flux

Dear Jakab Thank you for your suggestion and explanation. I looked into PESTPP-SWP and it does appear

Hello everyone! I have a general question about the GHB and HFB packages on GMS (forgive my lack of

Dear all, I am running a model with modflow-lgr-2 with pumping wells and keyword MNW2. Pumping wells

Hi all, I need the NWT solve table in the MODFLOW .out (the block under SOLVING FOR HEAD with columns

Hi, Try it in flopy. It will be easier and faster. //Ashutosh On Mon, Sep 29, 2025 at 5:45 PM

You are correct. MVE just moves the energy associated with a transfer of fluid. It does not have a

Hi Jakab, thanks for the tip! Em seg., 22 de set. de 2025 às 16:28, Jakab Andras - Gmail <jakaband

Hello Robert, Thank you for your input on this matter. Unfortunately i tried this approach but the

When I say PEST interface, I refer to all input files Flex creates in order to run PEST. These files

Hi, I am currently conducting a groundwater safety assessment using MODFLOW-2000/2005 with a regional

Dear Nasrin, I hope you are doing well. Regarding the high output head values you are encountering in

I guess it happens when well coordinates are outside the grid boundaries!! Regards, Askar From:

Hi, Is there anyone yet who managed to get it working on Mac or Linux?? Although I just use flopy

Hi, If i remember it right then -1 means that a constant head will be applied from the initial heads

To be short, because they are difficult to measure directly as compared to other parameters such as

Hey Modflow users…. Our two books are being published by John Cherry's Groundwater Project on

Hi all, Does anyone know if it's possible to do sequential decay with MF6? I found something in

you could set a higher RCLOSE (residual change) or HCLOSE (head change) in the solver, it will result

Thank you for the prompt response. I will check as suggested. On Wed, Aug 27, 2025 at 10:56 PM felix

New tutorial in our blog useful for water supply evaluation and design: Inflow modeling to

I'm running MPATH7 on the LA Basin model, which is MF-6. It is a huge model that starts in 1971

The flow rates for each well for each time step are listed in the budget file. On Fri, Aug 15, 2025,

Hi All, In both consulting and research projects that use tools like SWMM, MODFLOW, and other water

Hi all, particularly PHT3D users, I'm simulating transient flow and reactive transport (ion