Sylvain

Hi, I have recently started using the UZF package to simulated groudwater flow in a regional model. I firstly developed a steady state model using spatially distributed recharge from a surface model. I was using the «recharge» and the «EVT» package. With this configuration i was able to obtain a water budget with % error < 0.001%. When i replaced the recharge and EVT packages by the UZF, the water budget output file shows a line with a component called «HORT+DUNN» which i suspect to be the surface runoff flow. This component is not well describe in the USGS MODFLOW documentation. The problem is that this volume of water is only present in the «IN» part. In then creates a poor water balance ~1% to 5% error. If i remove it from the balance, the % error is good (> 0.01%). Any idea of how to deal with this water budget component? Regards

I have found out how do directly modify the recharge values in the raw MODFLOW .h5 file. You can use R package: https://www.bioconductor.org/packages/release/bioc/vignettes/rhdf5/inst/doc/rhdf5.pdf Good luck and thanks for you ideas!

Hi, Thanks for the reply. But i was looking for a more automated process than manually import the interpolated data into the Recharge window (2D Dataset -> Array) and assign them to each stress period. Lets say it takes 1 min to import each 2d grid for each stress period and i have 120! Thanks!

Hi, I would like to know if there is another way than manually assign transient recharge values from 2d array in the recharge package window. I have 120 raster (10 years of monthly recharge) of spatially distributed recharge to load in GMS. I'm thinking of going into MODFLOW input files. Any ideas? Regards

Hi, Is there a way to "flag" particle generated by Modpath to the well they come from? I'm using Modpath to evaluate residence time for 50 wells. I'm using 100 to 300 particle per well. It would be convenient if i could track back from which well the particle are from in the pathline report of GMS. Sylvain