Jason,

I would say that it depends on your objective. If you just want to describe
a steady-state well-defined flow system, you can do as you said, no problem.
Just remember that the flow model that you created using constant head
is absolutely rigid. This kind of model may not work well if you need to
verify the model response for stresses, mainly if the stress (a well, for
instance) is located close to the boundary condition.

Stela Cota
2009/6/17 jgaratti <jgaratti@...>

>
>
> I want to develop a simple 1 layer model and was wondering if I could use
> constant head boundaries on the upgradient and downgradient sides ends of my
> model area that match groundwater elevations measured in wells in both
> areas. Would this work or do I need to apply recharge values to simulate
> groundwater recharge. Your help would be appreciated.
>
> -Jason