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  2. Hi all I will be trying to develop cross sections and a solids model from 100 - 200 boreholes. I wanted to see how robust the auto process was in GMS. So I used the data from the TPROG tutorial with the Stratigraphy Modeling-Horizons and Solids tutorial. When I got to the Horizons -> Solids step I got the following error. I double checked that I completed all the steps a couple of times but always got the same result. Any bright ideas out there? TIA Ted
  3. Yesterday
  4. Greetings everyone, I am somewhat new to GMS and have made my way through a number of the tutorials, but I am struggling with setting up a SEAWAT model. I want to create a 2D cross section of a coastal aquifer with the elevation of the top of the model decreasing from left to right, reaching 0 meters at the shoreline (MSL). I have a measured elevation profile (in .txt format) of the study area (X and Z). My question is how to set up a 2D cross sectional domain in the X and Z direction (Y would be 1 meter into the page). Is there a way to define the model domain in cross-sectional view using the conceptual approach, and import the X and Z data to define the top of the model? I suspect the scatter point tools will be used (Interpolate to->MODFLOW Layers) , but it seems not possible to define the model boundaries and boundary conditions in cross sectional view. Thank you! 
  5. Donald, thank you for catching that! I will post it in the GMS forum.
  6. Hi there! You might want to post this in the GMS section of the forum, and not the SMS section. However, some in here might know.
  7. Greetings everyone, I am somewhat new to GMS and have made my way through a number of the tutorials, but I am struggling with setting up a SEAWAT model. I want to create a 2D cross section of a coastal aquifer with the elevation of the top of the model decreasing from left to right, reaching 0 meters at the shoreline (MSL). I have a measured elevation profile (in .txt format) of the study area (X and Z). My question is how to set up a 2D cross sectional domain in the X and Z direction (Y would be 1 meter into the page). Is there a way to define the model domain in cross-sectional view using the conceptual approach, and import the X and Z data to define the top of the model? I suspect the scatter point tools will be used (Interpolate to->MODFLOW Layers) , but it seems not possible to define the model boundaries and boundary conditions in cross sectional view. Thank you!
  8. Last week
  9. Earlier
  10. Thanks, this solved my problem. Even though my result is slightly different from my similar model solved with modflow-nwt my model now converges with the dry cells. Thanks.
  11. I am learning to use the CE-QUAL-W2 model through WMS. I am using the version 11.0 of WMS. I went through all the steps of the example described in WMS to set up a CE-QUAL-W2 model and its bathymetry data for the East Canyon reservoir. At the end of the process, WMS becomes unresponsive when I try to run a simulation. The control file could not be read. I wonder if anyone had a similar issue before. And how to fix this. I even used the solution files of the tutorial for this example but it still fails. Thanks for your help.
  12. I had the same problem, and the helpful guys at USGS helped me solve it. I was able to replicate the NWT solution by setting all layer types to 'Convertible Upstream' (in the LPF Package options) and using the '(1) Newton with Delta-Bar-Delta' nonlinear solution method (under the SMS solver options). When theses are selected, it reverts to the equivalent of MODFLOW-NWT, and I understand that the cell wetting options are not used. Hope that helps.
  13. Hello Dear all, I’m trying to run a transient model for ten years from 2006 to 2016.The flow budget in the aquifer is negative, Checking the information such as hydrodynamic coefficient shows that the hydrogeological condition changed after 2010 becuse of drawdown. Now I want to define the K (hydraulic coefficient) and Sy(specific yield) for two period separately. How can I define that in GMS? Any suggestion will be appreciated.... Best Regards Mina
  14. Hi An, you Have to change the name of your PEST project, Don't use any number and underline .....
  15. Related question - is there a direct or indirect interpolation pathway from MODFLOW heads (or 2D scatter, etc.) to feature object nodes
  16. Hi, thank you for your thoughts on this. It might be the problem. It is still my belief that it is possible to have MODFLOW-USG manage dry cells. At least that is what i get from reading the documentation of the code, and som litterature. I will try working on with it.
  17. Hi, I have some problems with building up my model in wms, maybe someone could help me with the following issues: - when I compute TOPAZ there are not all streams in my DEM so I want to add some manually with outlets or reservoirs. Is it possible to combine the calculated and the added streams? Is it possible to add outlets that are not in the flow accumulation cells? - than I have some lakes in my basin I want to add as reservoirs by turning the outlet into a reservoir or under Drainage-> Calculators | Detention Basin. What is the difference? And do I have to mark the surface area of the lakes aswell? - For precipitation I have an annual rain hydrograph, do I add this one under Define Precipitation in the Modeling Wizard as Gage? What does exactly mean Gage weights? Can I also add it as Basin average or is this only for 24 hours rain? Thanks a lot in advance. Miriam
  18. So let me tell you something that might help you to figure out what is going on. I had built a model using MODFLOW-USG....one of the reasons was because it managed dry cells without actually making them dry (model converged with no issue). Well, after months of working with this model, a newer MODFLOW-USG executable came out (and was being used in GMS) that eliminated that part of the programming (I guess it was not helpful to some people - enough complaints got the programming changed). Well, that certainly messed up my modeling. It wouldn't converge anymore. The solution was ultimately to set GMS to use the older executable. Soooo.....long story short.....the older MODFLOW-USG executable may solve your original model.
  19. Dear Aquaveo GMS users and Developer, I am trying to use pilot points calibration as the tutorial https://www.youtube.com/watch?v=kaFgRRPsifo to groundwater model calibration in my case study. Unfortunately, I got an error like the attached file. Does anyone have the experience to solve this issue? please help me. Thank you very much, An,
  20. Hello community. I am currently trying to build a model in MODFLOW-USG similiar to a model in MODFLOW-NWT. My NWT model is fast and robust. I have tried to build a similar model of the same area in USG in different ways, ending with the same problem. The model will not converge if any cells is dry. I discovered this by adjusting the recharge parameter. My USG model converged when the recharge was extremely high and no cells were dry. I tried to "convert model to MODFLOW-USG simulation" in GMS to check if the model would converge when there was no difference in grid structure. I get the same result. I need to increase the recharge to have no dry cells and a model that does not crashes. Can anyone tell me if the SMS solver in MODFLOW-USG can be set up in the same way as the NWT solver to handle dry cells, and how? Martin
  21. Fsanti1 I think the solution cell water depth will correspond to the water surface elevation you specify in the overland boundary condition and this water depth will be applied in each of the GSSHA overland flow model time steps to adjacent cells. This option is useful for coastal storm surge or levee break modeling. I have not personally looked at the code to guarantee that the water depth at the cell is kept at that boundary condition throughout the simulation though. Also, to answer the second part of your question, I do not know how GSSHA interpolates between water surface elevation values. My suggestion is to experiment with GSSHA and try to determine what it does with your water surface elevation values and then you can interpolate the water surface elevation values yourself as needed. Chris
  22. Hi Sean, Thank you very much for your prompt response. Best regards, Lalith
  23. Greeting Mr. Smemoe,

     Do you think you can help me with my question in the following topic:

    Thanks in advance

  24. Thanks Lalith - I'll write back when I have finished the conversion.
  25. It would only use it during transient runs.
  26. Hi All, This is more a fundamental GW question than modeling. Does MODFLOW steady state modeling use the Specific storage (S) in its groundwater flow calculations? I have an inherited steady state MODFLOW GW model where Specific storage (S) is left as 0 but model works. In the model, the hydraulic conductivity, longitudinal dispersivity, and porosity values are specified. Just trying to understand if the simulation results are correct. Your responses and suggestions are very much specified. Thank you, Lalith
  27. Please let me know how this works.
  28. Hi Ted, There are 3 approaches. 1. BC's are marked in red dots can also be specified along red lines. Model will try to better interpolate. the BC's. 2. You can go bit further in this approach as follows by specifying heads along contour lines (basically digitization). If your contour lines are in the form of either CAD or GIS shapefiles, then you can convert them to a line feature easily and specify them as Specified Heads (for All layers or selected layer range). You need to activate the layer range for that if you have multiple layers. 3. Go for MODFLOW-USG
  29. Refining a regional steady-state model where the local grid boundary intersects rivers and drains (see image). I went through the tutorials for SS refinement. This model departs from that example in a couple of ways - flow field is not nicely uniform in area; and MF BCs are intersected. I created 4 arcs initially to set up the boundary of the local model. Then I started to wing it - created nodes at each intersection of 1' head contours to map constant heads to the arcs but I'm thinking that may not be the best way to go. Any suggestions on a strategy for mapping the heads and the BCs to the local model are much appreciated. Ted
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