Problem in Adjusting Parameters

Hi! Now I'm modeling a steady model. But when I adjusted hydrogeological parameters according to observing groundwater level, I met a strange problem. That is, when I changed conductivities larger, the caculated water level in observing well became larger; when I changed conductivities smaller, the caculated water level in observing well became smaller.

This caculated result was illogical. I suppose the water level should be in negative correlation with conductivities. So I'm very confused about the caculated result above.

Please tell me what kind of error may lead to the wrong result I got above. Looking forward to your reply! Thanks!

You haven't given enough information.  It could be that the observation is not in the area where you changed K and that my explain the result, but it is equally likely that your model is not working properly.

It is entirely possible for a lowered conductivity to result in a lowered groundwater level at [b]some locations [/b] in your model.

A decresed conductivity will increase the groundwater level [b]gradient[/b], which may result in a rise in groundwater levels in some locations and a fall in others.  It all depends on the locations of recharge and discharge in your model as well as the geometry.  Look at what happens to the system as a whole, not just in one location - this may help you understand what is going on.

Pete and Blair, thanks for your reply!

Yes! The change of groundwater level also depends on the location of model. The results in recharge area and discharge area are different.

Thanks! I have got it!