I think that if you do not use the land surface elevation your model will
underestimate the impacts of the pumping wells.



--- In visual-modflow@..., Francesca Lotti <fralotti@...> wrote:
>
> Hello dear members,
>
> I'm doing a flow model of a thermal aquifer and I simulated thermal springs
> as drains. I set the elevation of the drain as the top of the model which is
> not the land surface. The model considers only the thermal aquifer, but in
> reality there is another aquifer on its top. What do you think about
> choosing the top of the layer 1 as elevation of the drain instead of the
> land surface?
> Of course, to obtain the right discharge I had to use a very low
> conductance...
> I'm going to add some wells and see how natural discharge varies in springs.
>
> Thanks to everybody!
>
> Francesca Lotti