Hello, What is the best standard values (minimum and maximum) for hydraulic conductivity (Kh,Kz), specific yield, and porosity for the following materials: ...
Husamb: If you run nitrate isotope analysis on you water samples you may be able to determine if the nitrate is agricultural fertilizers or from animal waste ...
DMBean
dmbean@...
May 2, 2005 3:10 am
1485
Dear Sirs, I am looking for a paper entitled "Performance based irrigation planning under water shortage" by Pushpa R. Onta, Rainer Loof and Madhab Banskota. ...
From Freeze and Cherry "Groundwater" Table 2.4 Range of porosities: Gravel 25-40% Sand 25-50% Silt 35-50% Clay 40-70% And I think there's some more stuff you'd...
Glover, Tim
ntglover@...
May 2, 2005 12:29 pm
1487
Hello Everyone, I was wondering if any of you have an idea, how to include an Impervious layer boundary condition in MODFLOW... As in the bottom most layer in...
Hello Ayman, There is a free program called EnviroBase that will specifically address your questions. EnviroBase is a handy database program that combines...
Martin Draeger
mdraeger@...
May 3, 2005 3:09 am
1489
Hi Swamy, Your lowest model layer has its base set as a no flow (impervious) boundary by default. If you want for, whatever reason, introduce another ...
Bron Smolski
bron.smolski@...
May 3, 2005 5:08 am
1490
I would like to load a base map in FEFLOW, but the base map is an AutoCAD exchange file (.dxf). Do I need to convert it to line file (.lin) to load and view it...
I would like to obtain transmissivity values for an unconfined karst aquifer from fluctuations in groundwater levels due to tidal forcing. Is this easy to do?...
Dear colleague, I think you don't need to convert your file. You should try to load your file in dxf Format. Feflow knows this format. Under "Add map", simply...
David ETCHEVERRY
detcheverry@...
May 3, 2005 9:20 am
1493
Ayman, To help you get started, you can find some of the hydraulic property information you seek at the Aquifer Test Forum (http://www.aquifertest.com/forum/)....
Swamy, There is no need to explicitly assign a bottom-most layer as totally impervious. By default, all boundaries on the exterior of the MODFLOW model grid...
Dear All: Looking to the large number E-mails received during last week, I can feel the enthusiasm with the GWMODEL group. Let me therefore, draw the Group...
Dr. SDLimaye
limaye@...
May 6, 2005 3:28 am
1496
Ayman carsel and parrish (water resource research 1988) have provided the mean and standard deviation for the saturated hydraulic conductivity, and the...
Hello all, Is it possible to insert layers between already existing layers in PMWIN? for eg; I wish to put one extra layer between layer-1 and layer-2 and...
Dear All I am wondering if anyone could help with treatment of rainfall data in visual MODFLOW. Also would like to know how to assignment boundary conditions...
Japhet Kashaigili
jkashaigili@...
May 6, 2005 3:56 am
1499
David, Thanks for your reply. I have tried loading the dxf file but it didn't appear on the plot. Regards, Sam David ETCHEVERRY <detcheverry@...> wrote: ...
Dear Sam, After loading the file in your system use "Add map" option for browisng your file and then use "Attach area"and then click O.K regard ganesh Anna...
Dear ALL, I am working in characterizing a three dimensional discrete fracture network. For constructing my model, it is necessairy to specify the direction of...
yes, you could do so. But you can not directly insert a new layer, you have to divide any one layer into two layer, and re-assign the elevation. good luck ...
Jinhui Zhang
jinhui@...
May 6, 2005 7:18 am
1503
Dear All I am seeking literature (especially papers) on modeling wetlands using Visual MODFLOW software. Any research report on the same will be highly...
Japhet Kashaigili
jkashaigili@...
May 6, 2005 8:20 am
1504
Dear all Now I am using PMWIN for groundwater model calibration.Yesterday I used an option of Zone input method to input parameter numbers for parameter...
Japhet, MODFLOW is a saturated zone model, so you cannot directly handle rainfall. An option is to use Visual HELP to estimate recharge to the groundwater from...
Jakab András
ajakab@...
May 6, 2005 8:57 am
1506
Dear Lee, Computation of T by tide-aquifer interaction involves two approaches: (a)direct use of 'Time Lag' model and/or 'Tidal Efficiency' model; and...
madan@...
May 6, 2005 8:59 am
1507
Hello Japhet, To respond to your questions: 1) The Recharge boundary condition could be used to simulate average rainfall (for example, monthly averages) being...
Techsupport
techsupport@...
May 7, 2005 3:12 am
1508
... Wilsnack, M. M., D. E. Welter, A. M. Montoya, J. I. Restrepo and J. Obeysekera. 2001. Simulating Flow in Regional Wetlands with the MODFLOW Wetlands...
Wilsnack, Mark
mwilsnac@...
May 7, 2005 3:14 am
1509
Hello Dr. Limaye, To respond to your questions: Visual MODFLOW software can be used to determine optimal pumping rates, volumes of water extracted, and...
Techsupport
techsupport@...
May 7, 2005 3:20 am
1510
Dr Limaye The following address is for a Technical Manual put out in 1983 called Dewatering and Groundwater Control. I believe it will provide you with the ...
Michael.Beach@...
May 7, 2005 3:22 am
1511
Hi, Pressing a button while moving the mouse should have not caused any problems. Has the display of the model grid eventually been turned off? You can turn it...
Dear all I am doing Calibration with UCODE with PMWIN. I encounter a problem. I am varing many input parameters and values, but UCODE gives an identical...
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