In a quasi-3D model, the confining units are not represented by model layers. Instead, the vertical conductance between the aquifers is set to a low value to...
Richard B. Winston
rbwinston@...
Mar 6, 2009 3:51 am
2971
Quasi-2D models and quasi-3D models are properly defined to classify analytical solutions for groundwater flow in layered aquifer systems. Modflow borrowed the...
Kick Hemker
hemker@...
Mar 7, 2009 8:41 am
2972
Ashley: Quasi-3D usually means that the model represents leaky, confining layers with purely vertical (1D) flow connections between the aquifer layers ...
Schreiber, Robert
SchreiberRP@...
Mar 7, 2009 8:41 am
2973
Dear colleagues, I am starting to build a 2D horizontal modelling of a coastal aquifer, which is of porous type and unconfined. Although it is a question of...
FAKIR Younes
fakir_younes@...
Mar 16, 2009 2:22 pm
2974
If your purpose is to study saltwater intrusion, as a first assumption I wouldn’t consider using a 2D horizontal model: the presence of a saltwater wedge...
Hello, Visual MODFLOW, developed by SWS, is a 3D groundwater flow and solute transport modeling application that has implemented the USGS SEAWAT module. SEAWAT...
Hello everyone, I m quite new to modflow,using GMS. My question is about river observations; I have river in my model which is passing from east to west....
As far as I understand, you don't actually model river flow using MODFLOW, you have to model river stage. If you know the channel dimensions you'll be able to...
That’s right: MODFLOW ignores the river flow. To simulate a river you have to measure (or derive from maps), among other data, its stage at different ...
Thanks for the informations, But the observed flow should be 20 l/s,not 120 or 100. Best Regards ... From: Giovanni Formentin <piercoop@...> Subject: R:...
Yes: 20 l/s should be the flow supplied by the aquifer to the river (if the river flows east to west) as calculated by the model through the whole river...
Actually there are alternatives. Here's one: If you use the RIV package, probably the single 20 l/s is appropriate. If you use the STR package, you might use...
You are correct in that the "river observation" corresponds to how much flow is exchanged between the aquifer and the river. It appears that you have a...
Norman L. Jones
njones@...
Mar 20, 2009 5:47 am
2983
Many thanks to all, this was what I need to know. Let me push my chance little bit, what would be the case in feflow If I want to calibtare the model with...
Hi gg, Feflow does not have a package like MODFLOW that simulates flow in rivers unless you obtain the additional Mike11 (actually the modflow packages RIV and...
Hello to everyone! My name is Vitor, and I'm a researcher in CETEC, a scientific research center in Brazil. I'm seeking for a software that is able to separate...
FEFLOW must be coupled with MIKE 11 to simulate river flow and surface-ground water exchanges. Using only FEFLOW and simulating the river with 3rd kind -...
HYSEP is good one. BFLOW and ?PART another two tools that can be used. Usually no single method can be confidently recommeded. Our experience is that we need...
Can you please elaborate what you mean by “calibrate the model with actual stream flow values”? Let’s suppose that you decided to use the MODFLOW SFR...
Norman L. Jones
njones@...
Mar 24, 2009 3:49 am
2991
I think it is important to distinguish between transient and steady-state analysis. If you are calibrating a steady-state groundwater model to annual average...
Mr. Jones, You seem to be implying that one should ignore the baseflow data, which not a good idea. Perhaps I misunderstand you. Perhaps when you claim that...
Yes, I think you misunderstood my point. I am not suggesting that the observed stream-aquifer should be ignored. I am suggesting that one shouldn’t bother...
Norman L. Jones
njones@...
Mar 25, 2009 8:15 am
2994
Der all, here is the case.(numbers are not real) The model completed with the river package.Both heads ,  base flow and full budget are calibrated in...
Hi all, i would like to create Transport Files for a Modflow Surfact Transport Simulation. Has somebody got experience in that ? Thanks a lot for any help, ...
stefan_goedeke@...
Mar 27, 2009 2:32 am
2997
Depending on the version of MODFLOW you are running, it should be relatively straight forward to import the MODFLOW-2000 (or later) data files generated by...
Patrick Delaney
patrickgdelaney@...
Mar 28, 2009 3:21 am
2998
Dear all, I have tried to developed a density depended three dimensional groundwater model with SEAWAT-2000 in a coastal aquifer. Disperison has not been...
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